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Text
LLBLGEN PRO
LLBLGen Pro: Using databases in your .NET code made easy. The entity modeling solution for Entity Framework, LLBLGen Pro Runtime Framework, NHibernate and Linq to SQL.LLBLGEN PRO
LLBLGen Pro v5.0. LLBLGen Pro v5.0 Designer documentation. LLBLGen Pro v5.0 Runtime Framework documentation. Entity Framework support documentation. Linq to Sql support documentation. NHibernate support documentation. Derived Models support documentation. LLBLGen Pro v5.0 Designer Reference Manual.GETTING STARTED
Additionally, this documentation contains a set of Quick Start Guides which guide you through the steps for a group of common scenarios, using multiple tutorials. It's a good way to get started if you are completely new to Object Relational Mapping and / or designers like the LLBLGen Pro designer. The Quick Start Guides are customized forthe
TRANSACTIONS
First a DataAccessAdapter object is created and a transaction is explicitly started. As soon as you start the transaction, a database connection is open and usable. It's best practice to embed the usage of a transaction in a try/catch/finally statement as it is done in the example above, or a using block. This ensures that if something fails during the usage of the transaction, everything is THE PREDICATE SYSTEMGENERAL USAGE
Aggregates. Linq supports five aggregate functions: Count ( predicate ), Sum, Max, Min and Average. There's a 6th, LongCount, but it can be seen as the same aggregate as Count, only that it will return a long/Int64 instead of an int/Int32. LLBLGen Pro supports CALLING A STORED PROCEDURE Wrap call in IRetrievalQuery object. LLBLGen Pro offers you to get the call to a retrieval stored procedure as an IRetrievalQuery object. An IRetrievalQuery object is the query object generated by a Dynamic Query Engine (DQE) and which is executed by the low level fetch logic of LLBLGen Pro's O/R mapper core. The IRetrievalQuery object allows you to fetch a query as a datareader or to project DELETING AN ENTITY INSTANCE Deleting an entity instance. Deleting an entity instance from the database has the same variety of options as modifying an entity has: Load the entity to delete in memory and call the method DataAccessAdapter.DeleteEntity().; Create a new entity instance into memory, set the PK field value(s) and call the method DataAccessAdapter.DeleteEntity().This avoids fetching the entity intomemory first.
FETCHING DATAREADERS AND PROJECTIONS Fetching DataReaders and projections. Besides using Linq or QuerySpec, LLBLGen Pro has two other ways of fetching a resultset of fields: as an open IDataReader object and as a projection.This section discusses both and offers examples for each of them, either using a stored procedure or a query build using entity fields.LLBLGEN PRO
LLBLGen Pro supports COM+ transactions for adapter as well through a special COM+ class called ComPlusAdapterContext. This class is generated in the DataAccessAdapter class file and is thus located in the database specific project. The ComPlusAdapterContext class is actually a thin wrapper class which implements abstract methods in itsbase
LLBLGEN PRO
LLBLGen Pro: Using databases in your .NET code made easy. The entity modeling solution for Entity Framework, LLBLGen Pro Runtime Framework, NHibernate and Linq to SQL.LLBLGEN PRO
LLBLGen Pro v5.0. LLBLGen Pro v5.0 Designer documentation. LLBLGen Pro v5.0 Runtime Framework documentation. Entity Framework support documentation. Linq to Sql support documentation. NHibernate support documentation. Derived Models support documentation. LLBLGen Pro v5.0 Designer Reference Manual.GETTING STARTED
Additionally, this documentation contains a set of Quick Start Guides which guide you through the steps for a group of common scenarios, using multiple tutorials. It's a good way to get started if you are completely new to Object Relational Mapping and / or designers like the LLBLGen Pro designer. The Quick Start Guides are customized forthe
TRANSACTIONS
First a DataAccessAdapter object is created and a transaction is explicitly started. As soon as you start the transaction, a database connection is open and usable. It's best practice to embed the usage of a transaction in a try/catch/finally statement as it is done in the example above, or a using block. This ensures that if something fails during the usage of the transaction, everything is THE PREDICATE SYSTEMGENERAL USAGE
Aggregates. Linq supports five aggregate functions: Count ( predicate ), Sum, Max, Min and Average. There's a 6th, LongCount, but it can be seen as the same aggregate as Count, only that it will return a long/Int64 instead of an int/Int32. LLBLGen Pro supports CALLING A STORED PROCEDURE Wrap call in IRetrievalQuery object. LLBLGen Pro offers you to get the call to a retrieval stored procedure as an IRetrievalQuery object. An IRetrievalQuery object is the query object generated by a Dynamic Query Engine (DQE) and which is executed by the low level fetch logic of LLBLGen Pro's O/R mapper core. The IRetrievalQuery object allows you to fetch a query as a datareader or to project DELETING AN ENTITY INSTANCE Deleting an entity instance. Deleting an entity instance from the database has the same variety of options as modifying an entity has: Load the entity to delete in memory and call the method DataAccessAdapter.DeleteEntity().; Create a new entity instance into memory, set the PK field value(s) and call the method DataAccessAdapter.DeleteEntity().This avoids fetching the entity intomemory first.
FETCHING DATAREADERS AND PROJECTIONS Fetching DataReaders and projections. Besides using Linq or QuerySpec, LLBLGen Pro has two other ways of fetching a resultset of fields: as an open IDataReader object and as a projection.This section discusses both and offers examples for each of them, either using a stored procedure or a query build using entity fields.LLBLGEN PRO
LLBLGen Pro supports COM+ transactions for adapter as well through a special COM+ class called ComPlusAdapterContext. This class is generated in the DataAccessAdapter class file and is thus located in the database specific project. The ComPlusAdapterContext class is actually a thin wrapper class which implements abstract methods in itsbase
LLBLGEN PRO
Generated code - The predicate system, Adapter Preface LLBLGen Pro's filtering capabilities are build using predicate objects, instantiated from predicate classes.This section describes these classes in depth, how to use them, what their purpose is and shows an example for everypredicate.
LLBLGEN PRO
How do I insert a NULL value for a field in a new entity? When you create an entity object, all fields get a default value. When you save the entity (using the SelfServicing method or the Adapter method), all changed fields are saved, all non-changed fields are skipped. This means, that if you for example save a new CustomerEntity and you don't set the ContactTitle property to a value, it willTRANSACTIONS
First a DataAccessAdapter object is created and a transaction is explicitly started. As soon as you start the transaction, a database connection is open and usable. It's best practice to embed the usage of a transaction in a try/catch/finally statement as it is done in the example above, or a using block. This ensures that if something fails during the usage of the transaction, everything isUSING DYNAMIC LISTS
Using dynamic lists. LLBLGen Pro offers you to create lists in code, without the necessity of the designer. This sometimes can become handy if you just want to pull a small list of data from the database without having to re-generate the code again. THE UNITOFWORK CLASS When Commit() is called, first all entities in the collection added are added as entities for the Delete action.After that, all actions are executed, first the save action, then the deletes. Stored procedures. The UnitOfWork class is able to collect calls to stored procedures as well, and lets you schedule these calls with the work already added to the UnitOfWork class, using four slots.LLBLGEN PRO
Concepts - Type Converters Preface LLBLGen Pro creates the entity definitions and entity field definitions from the table / view definitions available. USING THE TYPED LIST CLASSES Using the TypedList classes. LLBLGen Pro supports read-only lists based on a selection of entity fields from one or more entities with a relationship, called a TypedList.This section discusses how to generate typed lists as either a Typed Datatable or a POCO class and how to fetch the typed views at runtime. TRANSIENT ERROR RECOVERY (CONNECTION RESILIENCE) Transient Error Recovery. The LLBLGen Pro Runtime Framework supports basic Transient Error Recover, or Connection Resilience, duringoperations.
FIELD EXPRESSIONS AND AGGREGATES Field expressions and aggregates. It is sometimes necessary to use Aggregate functions (when a GroupByCollection is used) and / or expressions. This section describes both elements, aggregate functions and expressions, for the purposes they can be used in. This section illustrates the most common usage of the expression functionality andthe
USING THE ENTITYCOLLECTION CLASS Using the EntityCollection class. Adapter contains a general purpose, generic, EntityCollection class. The EntityCollection class is located in the HelperClasses namespace in the database generic project. This class is used to work on more than one entity at the same time and it is used to retrieve more than one entity of the same type from thedatabase.
LLBLGEN PRO
LLBLGen Pro: Using databases in your .NET code made easy. The entity modeling solution for Entity Framework, LLBLGen Pro Runtime Framework, NHibernate and Linq to SQL.LLBLGEN PRO
LLBLGen Pro v5.0. LLBLGen Pro v5.0 Designer documentation. LLBLGen Pro v5.0 Runtime Framework documentation. Entity Framework support documentation. Linq to Sql support documentation. NHibernate support documentation. Derived Models support documentation. LLBLGen Pro v5.0 Designer Reference Manual.GETTING STARTED
Additionally, this documentation contains a set of Quick Start Guides which guide you through the steps for a group of common scenarios, using multiple tutorials. It's a good way to get started if you are completely new to Object Relational Mapping and / or designers like the LLBLGen Pro designer. The Quick Start Guides are customized forthe
TRANSACTIONS
First a DataAccessAdapter object is created and a transaction is explicitly started. As soon as you start the transaction, a database connection is open and usable. It's best practice to embed the usage of a transaction in a try/catch/finally statement as it is done in the example above, or a using block. This ensures that if something fails during the usage of the transaction, everything is THE PREDICATE SYSTEMGENERAL USAGE
Aggregates. Linq supports five aggregate functions: Count ( predicate ), Sum, Max, Min and Average. There's a 6th, LongCount, but it can be seen as the same aggregate as Count, only that it will return a long/Int64 instead of an int/Int32. LLBLGen Pro supports CALLING A STORED PROCEDURE Wrap call in IRetrievalQuery object. LLBLGen Pro offers you to get the call to a retrieval stored procedure as an IRetrievalQuery object. An IRetrievalQuery object is the query object generated by a Dynamic Query Engine (DQE) and which is executed by the low level fetch logic of LLBLGen Pro's O/R mapper core. The IRetrievalQuery object allows you to fetch a query as a datareader or to project DELETING AN ENTITY INSTANCE Deleting an entity instance. Deleting an entity instance from the database has the same variety of options as modifying an entity has: Load the entity to delete in memory and call the method DataAccessAdapter.DeleteEntity().; Create a new entity instance into memory, set the PK field value(s) and call the method DataAccessAdapter.DeleteEntity().This avoids fetching the entity intomemory first.
FETCHING DATAREADERS AND PROJECTIONS Fetching DataReaders and projections. Besides using Linq or QuerySpec, LLBLGen Pro has two other ways of fetching a resultset of fields: as an open IDataReader object and as a projection.This section discusses both and offers examples for each of them, either using a stored procedure or a query build using entity fields.LLBLGEN PRO
LLBLGen Pro supports COM+ transactions for adapter as well through a special COM+ class called ComPlusAdapterContext. This class is generated in the DataAccessAdapter class file and is thus located in the database specific project. The ComPlusAdapterContext class is actually a thin wrapper class which implements abstract methods in itsbase
LLBLGEN PRO
LLBLGen Pro: Using databases in your .NET code made easy. The entity modeling solution for Entity Framework, LLBLGen Pro Runtime Framework, NHibernate and Linq to SQL.LLBLGEN PRO
LLBLGen Pro v5.0. LLBLGen Pro v5.0 Designer documentation. LLBLGen Pro v5.0 Runtime Framework documentation. Entity Framework support documentation. Linq to Sql support documentation. NHibernate support documentation. Derived Models support documentation. LLBLGen Pro v5.0 Designer Reference Manual.GETTING STARTED
Additionally, this documentation contains a set of Quick Start Guides which guide you through the steps for a group of common scenarios, using multiple tutorials. It's a good way to get started if you are completely new to Object Relational Mapping and / or designers like the LLBLGen Pro designer. The Quick Start Guides are customized forthe
TRANSACTIONS
First a DataAccessAdapter object is created and a transaction is explicitly started. As soon as you start the transaction, a database connection is open and usable. It's best practice to embed the usage of a transaction in a try/catch/finally statement as it is done in the example above, or a using block. This ensures that if something fails during the usage of the transaction, everything is THE PREDICATE SYSTEMGENERAL USAGE
Aggregates. Linq supports five aggregate functions: Count ( predicate ), Sum, Max, Min and Average. There's a 6th, LongCount, but it can be seen as the same aggregate as Count, only that it will return a long/Int64 instead of an int/Int32. LLBLGen Pro supports CALLING A STORED PROCEDURE Wrap call in IRetrievalQuery object. LLBLGen Pro offers you to get the call to a retrieval stored procedure as an IRetrievalQuery object. An IRetrievalQuery object is the query object generated by a Dynamic Query Engine (DQE) and which is executed by the low level fetch logic of LLBLGen Pro's O/R mapper core. The IRetrievalQuery object allows you to fetch a query as a datareader or to project DELETING AN ENTITY INSTANCE Deleting an entity instance. Deleting an entity instance from the database has the same variety of options as modifying an entity has: Load the entity to delete in memory and call the method DataAccessAdapter.DeleteEntity().; Create a new entity instance into memory, set the PK field value(s) and call the method DataAccessAdapter.DeleteEntity().This avoids fetching the entity intomemory first.
FETCHING DATAREADERS AND PROJECTIONS Fetching DataReaders and projections. Besides using Linq or QuerySpec, LLBLGen Pro has two other ways of fetching a resultset of fields: as an open IDataReader object and as a projection.This section discusses both and offers examples for each of them, either using a stored procedure or a query build using entity fields.LLBLGEN PRO
LLBLGen Pro supports COM+ transactions for adapter as well through a special COM+ class called ComPlusAdapterContext. This class is generated in the DataAccessAdapter class file and is thus located in the database specific project. The ComPlusAdapterContext class is actually a thin wrapper class which implements abstract methods in itsbase
LLBLGEN PRO
Generated code - The predicate system, Adapter Preface LLBLGen Pro's filtering capabilities are build using predicate objects, instantiated from predicate classes.This section describes these classes in depth, how to use them, what their purpose is and shows an example for everypredicate.
LLBLGEN PRO
How do I insert a NULL value for a field in a new entity? When you create an entity object, all fields get a default value. When you save the entity (using the SelfServicing method or the Adapter method), all changed fields are saved, all non-changed fields are skipped. This means, that if you for example save a new CustomerEntity and you don't set the ContactTitle property to a value, it willTRANSACTIONS
First a DataAccessAdapter object is created and a transaction is explicitly started. As soon as you start the transaction, a database connection is open and usable. It's best practice to embed the usage of a transaction in a try/catch/finally statement as it is done in the example above, or a using block. This ensures that if something fails during the usage of the transaction, everything isUSING DYNAMIC LISTS
Using dynamic lists. LLBLGen Pro offers you to create lists in code, without the necessity of the designer. This sometimes can become handy if you just want to pull a small list of data from the database without having to re-generate the code again. THE UNITOFWORK CLASS When Commit() is called, first all entities in the collection added are added as entities for the Delete action.After that, all actions are executed, first the save action, then the deletes. Stored procedures. The UnitOfWork class is able to collect calls to stored procedures as well, and lets you schedule these calls with the work already added to the UnitOfWork class, using four slots.LLBLGEN PRO
Concepts - Type Converters Preface LLBLGen Pro creates the entity definitions and entity field definitions from the table / view definitions available. USING THE TYPED LIST CLASSES Using the TypedList classes. LLBLGen Pro supports read-only lists based on a selection of entity fields from one or more entities with a relationship, called a TypedList.This section discusses how to generate typed lists as either a Typed Datatable or a POCO class and how to fetch the typed views at runtime. TRANSIENT ERROR RECOVERY (CONNECTION RESILIENCE) Transient Error Recovery. The LLBLGen Pro Runtime Framework supports basic Transient Error Recover, or Connection Resilience, duringoperations.
FIELD EXPRESSIONS AND AGGREGATES Field expressions and aggregates. It is sometimes necessary to use Aggregate functions (when a GroupByCollection is used) and / or expressions. This section describes both elements, aggregate functions and expressions, for the purposes they can be used in. This section illustrates the most common usage of the expression functionality andthe
USING THE ENTITYCOLLECTION CLASS Using the EntityCollection class. Adapter contains a general purpose, generic, EntityCollection class. The EntityCollection class is located in the HelperClasses namespace in the database generic project. This class is used to work on more than one entity at the same time and it is used to retrieve more than one entity of the same type from thedatabase.
LLBLGEN PRO
LLBLGen Pro: Using databases in your .NET code made easy. The entity modeling solution for Entity Framework, LLBLGen Pro Runtime Framework, NHibernate and Linq to SQL.LLBLGEN PRO
LLBLGen Pro v5.0. LLBLGen Pro v5.0 Designer documentation. LLBLGen Pro v5.0 Runtime Framework documentation. Entity Framework support documentation. Linq to Sql support documentation. NHibernate support documentation. Derived Models support documentation. LLBLGen Pro v5.0 Designer Reference Manual.GETTING STARTED
Additionally, this documentation contains a set of Quick Start Guides which guide you through the steps for a group of common scenarios, using multiple tutorials. It's a good way to get started if you are completely new to Object Relational Mapping and / or designers like the LLBLGen Pro designer. The Quick Start Guides are customized forthe
TRANSACTIONS
First a DataAccessAdapter object is created and a transaction is explicitly started. As soon as you start the transaction, a database connection is open and usable. It's best practice to embed the usage of a transaction in a try/catch/finally statement as it is done in the example above, or a using block. This ensures that if something fails during the usage of the transaction, everything isGENERAL USAGE
Aggregates. Linq supports five aggregate functions: Count ( predicate ), Sum, Max, Min and Average. There's a 6th, LongCount, but it can be seen as the same aggregate as Count, only that it will return a long/Int64 instead of an int/Int32. LLBLGen Pro supports THE UNITOFWORK CLASS When Commit() is called, first all entities in the collection added are added as entities for the Delete action.After that, all actions are executed, first the save action, then the deletes. Stored procedures. The UnitOfWork class is able to collect calls to stored procedures as well, and lets you schedule these calls with the work already added to the UnitOfWork class, using four slots.USING DYNAMIC LISTS
Using dynamic lists. LLBLGen Pro offers you to create lists in code, without the necessity of the designer. This sometimes can become handy if you just want to pull a small list of data from the database without having to re-generate the code again. CALLING A STORED PROCEDURE Wrap call in IRetrievalQuery object. LLBLGen Pro offers you to get the call to a retrieval stored procedure as an IRetrievalQuery object. An IRetrievalQuery object is the query object generated by a Dynamic Query Engine (DQE) and which is executed by the low level fetch logic of LLBLGen Pro's O/R mapper core. The IRetrievalQuery object allows you to fetch a query as a datareader or to projectLLBLGEN PRO
LLBLGen Pro supports COM+ transactions for adapter as well through a special COM+ class called ComPlusAdapterContext. This class is generated in the DataAccessAdapter class file and is thus located in the database specific project. The ComPlusAdapterContext class is actually a thin wrapper class which implements abstract methods in itsbase
USING THE ENTITYCOLLECTION CLASS Using the EntityCollection class. Adapter contains a general purpose, generic, EntityCollection class. The EntityCollection class is located in the HelperClasses namespace in the database generic project. This class is used to work on more than one entity at the same time and it is used to retrieve more than one entity of the same type from thedatabase.
LLBLGEN PRO
LLBLGen Pro: Using databases in your .NET code made easy. The entity modeling solution for Entity Framework, LLBLGen Pro Runtime Framework, NHibernate and Linq to SQL.LLBLGEN PRO
LLBLGen Pro v5.0. LLBLGen Pro v5.0 Designer documentation. LLBLGen Pro v5.0 Runtime Framework documentation. Entity Framework support documentation. Linq to Sql support documentation. NHibernate support documentation. Derived Models support documentation. LLBLGen Pro v5.0 Designer Reference Manual.GETTING STARTED
Additionally, this documentation contains a set of Quick Start Guides which guide you through the steps for a group of common scenarios, using multiple tutorials. It's a good way to get started if you are completely new to Object Relational Mapping and / or designers like the LLBLGen Pro designer. The Quick Start Guides are customized forthe
TRANSACTIONS
First a DataAccessAdapter object is created and a transaction is explicitly started. As soon as you start the transaction, a database connection is open and usable. It's best practice to embed the usage of a transaction in a try/catch/finally statement as it is done in the example above, or a using block. This ensures that if something fails during the usage of the transaction, everything isGENERAL USAGE
Aggregates. Linq supports five aggregate functions: Count ( predicate ), Sum, Max, Min and Average. There's a 6th, LongCount, but it can be seen as the same aggregate as Count, only that it will return a long/Int64 instead of an int/Int32. LLBLGen Pro supports THE UNITOFWORK CLASS When Commit() is called, first all entities in the collection added are added as entities for the Delete action.After that, all actions are executed, first the save action, then the deletes. Stored procedures. The UnitOfWork class is able to collect calls to stored procedures as well, and lets you schedule these calls with the work already added to the UnitOfWork class, using four slots.USING DYNAMIC LISTS
Using dynamic lists. LLBLGen Pro offers you to create lists in code, without the necessity of the designer. This sometimes can become handy if you just want to pull a small list of data from the database without having to re-generate the code again. CALLING A STORED PROCEDURE Wrap call in IRetrievalQuery object. LLBLGen Pro offers you to get the call to a retrieval stored procedure as an IRetrievalQuery object. An IRetrievalQuery object is the query object generated by a Dynamic Query Engine (DQE) and which is executed by the low level fetch logic of LLBLGen Pro's O/R mapper core. The IRetrievalQuery object allows you to fetch a query as a datareader or to projectLLBLGEN PRO
LLBLGen Pro supports COM+ transactions for adapter as well through a special COM+ class called ComPlusAdapterContext. This class is generated in the DataAccessAdapter class file and is thus located in the database specific project. The ComPlusAdapterContext class is actually a thin wrapper class which implements abstract methods in itsbase
USING THE ENTITYCOLLECTION CLASS Using the EntityCollection class. Adapter contains a general purpose, generic, EntityCollection class. The EntityCollection class is located in the HelperClasses namespace in the database generic project. This class is used to work on more than one entity at the same time and it is used to retrieve more than one entity of the same type from thedatabase.
LLBLGEN PRO
LLBLGen Pro trial of ORM and Designer for Entity Framework, NHibernate, Linq to Sql and LLBLGen Pro RTFLLBLGEN PRO
LLBLGen Pro: Using databases in your .NET code made easy. The entity modeling solution for Entity Framework, LLBLGen Pro Runtime Framework, NHibernate and Linq to SQL. THE PREDICATE SYSTEM The predicate system. LLBLGen Pro's filtering capabilities are build using predicate objects, instantiated from predicate classes. This section describes these classes in depth, how to use them, what their purpose is and shows an example for every predicate. These classes are part of the low-level API of the LLBLGen Pro runtime framework.USING DYNAMIC LISTS
Using dynamic lists. LLBLGen Pro offers you to create lists in code, without the necessity of the designer. This sometimes can become handy if you just want to pull a small list of data from the database without having to re-generate the code again. THE UNITOFWORK2 CLASS The UnitOfWork2 class works with Add methods for an entity and a given action: AddForSave () or AddForDelete (). You can specify additional parameters for the action: recursive saves and save / delete restriction filters. A delete action for a new entity is ignored. TheLLBLGEN PRO
Generated code - The predicate system, Adapter Preface LLBLGen Pro's filtering capabilities are build using predicate objects, instantiated from predicate classes.This section describes these classes in depth, how to use them, what their purpose is and shows an example for everypredicate.
USING THE ENTITYCOLLECTION CLASS Using the EntityCollection class. Adapter contains a general purpose, generic, EntityCollection class. The EntityCollection class is located in the HelperClasses namespace in the database generic project. This class is used to work on more than one entity at the same time and it is used to retrieve more than one entity of the same type from thedatabase.
USE THE DESIGNER INSIDE VISUAL STUDIO How it works. The Visual Studio 2012/2013/2015/2017 integration is implemented through a Visual Studio extension.This extension plugs the various components of the stand-alone LLBLGen Pro designer into Visual Studio and makes sure menu items, tool windows and toolbars work with the actual LLBLGen Pro designer instance. ADDING YOUR OWN CODE TO THE GENERATED CLASSES Adding your own code to generated classes has the downside that when you re-generate the code into the same folder, your changes will be overwritten. LLBLGen Pro offers several ways to add your own code to the generated code to avoid that from happening: Through partial classes (Recommended). Through include templates, which are templateswhich
MODIFYING AN ENTITY INSTANCE Modifying an entity's data (the entity instance) can be done in multiple ways: Loading an existing entity in memory, alter one or more fields (not sequenced fields) and call a DataAccessAdapter object's SaveEntity () method. Create a new entity, set the primary key values (used for filtering), set the IsNew property to false, set one or moreLLBLGEN PRO
LLBLGen Pro: Using databases in your .NET code made easy. The entity modeling solution for Entity Framework, LLBLGen Pro Runtime Framework, NHibernate and Linq to SQL.GETTING STARTED
To begin, start with the Concepts section. Firing up the GUI, creating a project, adding some entities, generating some code, it's not that hard to do, even without reading any documentation.LLBLGEN PRO
Below you'll find direct links to all the available documentation for LLBLGen Pro and ORM Profiler for various versions. All links open in anew window.
TRANSACTIONS
First a DataAccessAdapter object is created and a transaction is explicitly started. As soon as you start the transaction, a database connection is open and usable. It's best practice to embed the usage of a transaction in a try/catch/finally statement as it is done in the example above, or a using block. This ensures that if something fails during the usage of the transaction, everything isGENERAL USAGE
Limitations. A query which is unioned into another query using Union or Concat can't contain a nested query in the projection nor can it prefetch path definitions nor paging directives.. Using a Table Valued Function call. To fetch entities mapped onto the resultset of a Table Valued Function, the LinqMetaData class offers each mapped Table Valued Function which is the target of an entity as a THE UNITOFWORK CLASS When Commit() is called, first all entities in the collection added are added as entities for the Delete action.After that, all actions are executed, first the save action, then the deletes. Stored procedures. The UnitOfWork class is able to collect calls to stored procedures as well, and lets you schedule these calls with the work already added to the UnitOfWork class, using four slots.LLBLGEN PRO
First a transaction object is created. As soon as you instantiate the object, a database connection is open and usable. This is also the reason why you have to include a finally clause and have to call Dispose() when the transaction is no longer needed. If you want an entity or entity collection object (and all its objects inside it) to participate in a transaction, add it to the particularUSING DYNAMIC LISTS
Using dynamic lists. LLBLGen Pro offers you to create lists in code, without the necessity of the designer. This sometimes can become handy if you just want to pull a small list of data from the database without having to re-generate the code again. USING THE ENTITYCOLLECTION CLASS Using the EntityCollection class. Adapter contains a general purpose, generic, EntityCollection class. The EntityCollection class is located in the HelperClasses namespace in the database generic project. This class is used to work on more than one entity at the same time and it is used to retrieve more than one entity of the same type from thedatabase.
LLBLGEN PRO
' ' create adapter for fetching and the transaction. Dim adapter As New DataAccessAdapter() ' start the transaction. adapter.StartTransaction(IsolationLevel.ReadCommitted, "TwoUpates") Try ' fetch the two entities Dim customer As New CustomerEntity("CHOPS") Dim order As New OrderEntity(10254) adapter.FetchEntity(customer) adapter.FetchEntity(order) ' alter the entities customer.FaxLLBLGEN PRO
LLBLGen Pro: Using databases in your .NET code made easy. The entity modeling solution for Entity Framework, LLBLGen Pro Runtime Framework, NHibernate and Linq to SQL.GETTING STARTED
To begin, start with the Concepts section. Firing up the GUI, creating a project, adding some entities, generating some code, it's not that hard to do, even without reading any documentation.LLBLGEN PRO
Below you'll find direct links to all the available documentation for LLBLGen Pro and ORM Profiler for various versions. All links open in anew window.
TRANSACTIONS
First a DataAccessAdapter object is created and a transaction is explicitly started. As soon as you start the transaction, a database connection is open and usable. It's best practice to embed the usage of a transaction in a try/catch/finally statement as it is done in the example above, or a using block. This ensures that if something fails during the usage of the transaction, everything isGENERAL USAGE
Limitations. A query which is unioned into another query using Union or Concat can't contain a nested query in the projection nor can it prefetch path definitions nor paging directives.. Using a Table Valued Function call. To fetch entities mapped onto the resultset of a Table Valued Function, the LinqMetaData class offers each mapped Table Valued Function which is the target of an entity as a THE UNITOFWORK CLASS When Commit() is called, first all entities in the collection added are added as entities for the Delete action.After that, all actions are executed, first the save action, then the deletes. Stored procedures. The UnitOfWork class is able to collect calls to stored procedures as well, and lets you schedule these calls with the work already added to the UnitOfWork class, using four slots.LLBLGEN PRO
First a transaction object is created. As soon as you instantiate the object, a database connection is open and usable. This is also the reason why you have to include a finally clause and have to call Dispose() when the transaction is no longer needed. If you want an entity or entity collection object (and all its objects inside it) to participate in a transaction, add it to the particularUSING DYNAMIC LISTS
Using dynamic lists. LLBLGen Pro offers you to create lists in code, without the necessity of the designer. This sometimes can become handy if you just want to pull a small list of data from the database without having to re-generate the code again. USING THE ENTITYCOLLECTION CLASS Using the EntityCollection class. Adapter contains a general purpose, generic, EntityCollection class. The EntityCollection class is located in the HelperClasses namespace in the database generic project. This class is used to work on more than one entity at the same time and it is used to retrieve more than one entity of the same type from thedatabase.
LLBLGEN PRO
' ' create adapter for fetching and the transaction. Dim adapter As New DataAccessAdapter() ' start the transaction. adapter.StartTransaction(IsolationLevel.ReadCommitted, "TwoUpates") Try ' fetch the two entities Dim customer As New CustomerEntity("CHOPS") Dim order As New OrderEntity(10254) adapter.FetchEntity(customer) adapter.FetchEntity(order) ' alter the entities customer.Fax THE PREDICATE SYSTEM The examples in this section will use these extension methods. See for more examples of what extension methods are available to you, the QuerySpec section, or the LLBLGen Pro RTL Reference Manual, and check the extension methods on the classes EntityField (SelfServicing), EntityField2 (Adapter), Predicate and Expression.. Predicates and their SQL equivalentsLLBLGEN PRO
LLBLGen Pro trial of ORM and Designer for Entity Framework, NHibernate, Linq to Sql and LLBLGen Pro RTFLLBLGEN PRO
LLBLGen Pro: Using databases in your .NET code made easy. The entity modeling solution for Entity Framework, LLBLGen Pro Runtime Framework, NHibernate and Linq to SQL.LLBLGEN PRO
LLBLGen Pro v2.x lgp file migration template for v2.x to migrate v2.x lgp files to v5.8 llblgenproj files. Please read the enclosed readmefor details.
USING DYNAMIC LISTS
Using dynamic lists. LLBLGen Pro offers you to create lists in code, without the necessity of the designer. This sometimes can become handy if you just want to pull a small list of data from the database without having to re-generate the code again. THE UNITOFWORK2 CLASS After the Commit() action, the database has two new entities, the customer and the address, and the product entity is deleted.These actions are taken place inside a new transaction and when Commit() was called, which auto-commits the transaction at the end of the actions.. Entity collections. Sometimes a complete collection of entities has to be saved, or deleted.LLBLGEN PRO
Generated code - The predicate system, Adapter Preface LLBLGen Pro's filtering capabilities are build using predicate objects, instantiated from predicate classes.This section describes these classes in depth, how to use them, what their purpose is and shows an example for everypredicate.
MODIFYING AN ENTITY INSTANCE We have to set the primary key field, so the Update method will only update a single entity, the CHOPS entity. First we specify the altering of a field, in this case Phone.Next, we have to mark the new, empty entity class instance as not being new, so SaveEntity() will use an UPDATE query, instead of an INSERT query.. This is done by setting the entity object's property IsNew to false. USING THE ENTITYCOLLECTION CLASS Using the EntityCollection class. Adapter contains a general purpose, generic, EntityCollection class. The EntityCollection class is located in the HelperClasses namespace in the database generic project. This class is used to work on more than one entity at the same time and it is used to retrieve more than one entity of the same type from thedatabase.
USE THE DESIGNER INSIDE VISUAL STUDIO How it works. The Visual Studio 2012/2013/2015/2017 integration is implemented through a Visual Studio extension.This extension plugs the various components of the stand-alone LLBLGen Pro designer into Visual Studio and makes sure menu items, tool windows and toolbars work with the actual LLBLGen Pro designer instance. * __ Customer Login* __
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LLBLGEN PRO V5.6 IS HERE! See what's new in LLBLGen Pro v5.6 BRIDGE THE GAP BETWEEN YOUR CODE AND THE DATABASE TRUSTED BY OVER 7000 COMPANIES IN OVER 100 COUNTRIES WORLDWIDE. USING DATABASES IN YOUR .NET CODE MADE EASY To write queries against your ORM framework, utilizing your databaseand your data:
LLBLGen Pro gets you there immediately, whether you target .NET Full, .NET Core or Xamarin. BEST SOLUTION FOR...__
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The LLBLGen Pro Runtime Framework is best-in-class for cloud-based apps, due to its low-memory, high performance characteristics. .NET Core or .NET Full: your choice.Read more __
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WORKING WITH ENTITY FRAMEWORK CORE CLASS MODELS __ No designer on the market lets you work as effortlessly with Entity Framework and Entity Framework Core class models as LLBLGen Pro.Read more __
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WINDOWS-BASED LINE-OF-BUSINESS APPS __ The LLBLGen Pro Runtime Framework offers the rich set of features needed for today's Line-of-Business development: powerful auditing, authorization and validation functionality as well as async/await, linq and flexible databinding support.Read more __
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EXPOSING A CLASS MODEL THROUGH A SERVICE __ The Derived Models feature offered by the LLBLGen Pro designer allows you to create DTO class models based on your entity model, which are ready-to-use in your WebAPI/(micro)service.Read more __
USE ANY .NET ORM FRAMEWORK LLBLGen Pro is the leading entity modeling solution for .NET and can be used with Entity Framework Core or Entity Framework Full , the LLBLGen Pro Runtime Framework (included), NHibernate and Linq to Sql . It lets you easily define your entity model and map it to your database so you can get started writing queries right away. The LLBLGen Pro Designer__
WORK THE WAY YOU WANT The LLBLGen Pro Designer supports both database-first and model-first modeling. At any given moment you can switch between the two, giving you the flexibility you need.__
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The Designer is the best choice for working with the major O/R Mapping frameworks: Entity Framework Core, Entity Framework Full, the LLBLGen Pro Runtime Framework, NHibernate and Linq to Sql. It's flexible, allowing you to configure any aspect of the mapping workflow. It's robust, designed to handle models with thousands of entities.__
WORLD-CLASS GENERATED CODE The code produced by the Designer reads like it's been written by you. It's clean, well documented and well tested. There are no surprises, so you can focus on more important matters.__
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The LLBLGen Pro Designer offers the complete toolset you'll need to utilize any of the supported O/R mapper frameworks and databases in your application to the fullest. __Get started Learn more SOPHISTICATED O/R MAPPING With the LLBLGen Pro designer you create the necessary code bases to use any of the following supported O/R mapping frameworks. ENTITY FRAMEWORK CORE / FULL Use the Entity Framework, be it Entity Framework Core, v6 or an older version, the way Microsoft intended. Without any effort.Read more __
LLBLGEN PRO RUNTIME FRAMEWORK Our own, high performance and fully featured O/R mapping framework. A modern and reliable ORM which gives you the power you need to fully utilize the potential of your application. The LLBLGen Pro Runtime Framework ships with the LLBLGen Pro designer.Read more __
NHIBERNATE
Your choice for NHibernate doesn't mean you have to write its mappings and classes by hand: the LLBLGen Pro designer lets you get started with this sophisticated Open Source ORM quickly.Read more __
LINQ TO SQL
The LLBLGen Pro designer gives you a full design experience for this Microsoft ORM in ways the Microsoft designer never could.Read more __
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YOU ARE A PROFESSIONAL, SO YOU NEED PROFESSIONAL TOOLS TOOLS YOU CAN RELY ON, BECAUSE YOUR CLIENTS RELY ON YOU.WHY LLBLGEN PRO?
SHORTER DEVELOPMENT TIME The time a developer used to spend on repetitive tasks is eliminated, doubling productivity. This means projects can be completed on time. DESIGNED TO BE OPEN AND FLEXIBLE The designer and our framework are designed to be open, flexible and extensible so they meet the way you want to work with entity modelsand your data.
DEVELOPED BY EXPERTS In-depth experience with data-access and entity-management makes the LLBLGen Pro team the right people for doing the job of writing Data Access and Business Objects tiers. NO MISTAKES ARE MADE WRITING THE 'PLUMBING' The code generated by LLBLGen Pro is mature (on the market since 2003) and has been tested thoroughly, making the appearance of bugs virtually non-existent when compared to situations in which the 'plumbing' is written manually.PRICING
Prices are per seat and exclusive of VAT and handling costs.* __ Fully featured
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An LLBLGen Pro license comes with the LLBLGen Pro Designer, the LLBLGen Pro Runtime Framework, full support for Entity Framework, Entity Framework Core, NHibernate, and Linq to Sql, ORM Profiler, and extensive documentation.VOLUME DISCOUNTS
Volume discounts for LLBLGen Pro are available if you purchase multiple licenses at once. See the table at the right for the price bands. The correct total amount for the number of licenses you purchase is calculated automatically on the order page.NUMBER OF LICENSES
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