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LINQ:

LINQ .NET 3.5 Marc Vangrieken marc.vangrieken@gmail.com http://vangrieken.wordpress.com

What is Linq?:

What is Linq?

Introduction to C# 3.0:

Introduction to C# 3.0

Introduction to C# 3.0Collection Initializers:

Introduction to C# 3.0 Collection Initializers

Introduction to C# 3.0Extension methods:

Introduction to C# 3.0 Extension methods

Introduction to C# 3.0 Extension methods:

Introduction to C# 3.0 Extension methods

Replacing LINQ Extension Methods:

Replacing LINQ Extension Methods

Introduction to C# 3.0Type Inference:

Introduction to C# 3.0 Type Inference

Introduction to C# 3.0Type Inference:

Introduction to C# 3.0 Type Inference

Introduction to C# 3.0Anonymous types:

Introduction to C# 3.0 Anonymous types

Introduction to C# 3.0Automatic Properties:

Introduction to C# 3.0 Automatic Properties

Introduction to C# 3.0Lambda expressions:

Introduction to C# 3.0 Lambda expressions

Introduction to C# 3.0Lambda expressions:

Introduction to C# 3.0 Lambda expressions

Introduction to C# 3.0 Parameters to Lambda Expressions:

Introduction to C# 3.0 Parameters to Lambda Expressions

Introduction to C# 3.0 Lambda Body Can Be Single Expression or Statement Block:

Introduction to C# 3.0 Lambda Body Can Be Single Expression or Statement Block

Introduction to C# 3.0 Expression Trees:

Introduction to C# 3.0 Expression Trees

Introduction to C# 3.0 Expression trees:

Introduction to C# 3.0 Expression trees

Linq To Objects:

Linq To Objects

Linq To Objects Hello, LINQ in C#:

Linq To Objects Hello, LINQ in C#

Linq To Objects Hello, LINQ in VB:

Linq To Objects Hello, LINQ in VB

Linq To Objects DEMO:

Linq To Objects DEMO

Linq To Objects Standard Query Operators:

Linq To Objects Standard Query Operators

Linq To Objects Positional Query Operators:

Linq To Objects Positional Query Operators

Linq To Objects Set Based Query Operators:

Linq To Objects Set Based Query Operators

Linq To Objects Join Operators:

Linq To Objects Join Operators

Linq To Objects Ordering operators:

Linq To Objects Ordering operators

Linq To ObjectsConversion operators:

Linq To Objects Conversion operators

Linq To Objects DEMO:

Linq To Objects DEMO

Linq To Objects Projection: Creating New Types To Hold Query Results:

Linq To Objects Projection: Creating New Types To Hold Query Results

Linq To Objects Projection That Creates a Nested 1-Many Collection:

Linq To Objects Projection That Creates a Nested 1-Many Collection

Linq To Objects LINQ Queries Are Lazy:

Linq To Objects LINQ Queries Are Lazy

Linq To Objects Modifying a Query Before Execution:

Linq To Objects Modifying a Query Before Execution

Linq To Objects You are always working with IEnumerable:

Linq To Objects You are always working with IEnumerable

Linq To Sql:

Linq To Sql

Linq To SqlHello, Linq To Sql:

Linq To Sql Hello, Linq To Sql

Linq To SqlEverything is SQL:

Linq To Sql Everything is SQL

Linq To SqlWhen does the query go to the database?:

Linq To Sql When does the query go to the database?

Linq To SqlObject Model:

Linq To Sql Object Model

Linq To SqlObject Model:

Linq To Sql Object Model

Linq To SqlObject Model:

Linq To Sql Object Model

Linq To SqlObject Model:

Linq To Sql Object Model

Linq To SqlObject Model:

Linq To Sql Object Model

Linq To SqlDataContext:

Linq To Sql DataContext

Linq To SqlDataContext:

Linq To Sql DataContext

Linq To SqlDataContext:

Linq To Sql DataContext

Linq To SqlRetrieving data:

Linq To Sql Retrieving data

Linq To SqlObject Identity:

Linq To Sql Object Identity

Linq To SqlRelations:

Linq To Sql Relations

Linq To SqlEager loading / prefetching:

Linq To Sql Eager loading / prefetching

Linq To Sql Updating data:

Linq To Sql Updating data Inserting InsertOnSubmit(entity) InsertAllOnSubmit(entityCollection) Constraints are not checked early, queries are always sent to the database. Updating SubmitChanges() Deleting DeleteOnSubmit(entity) DeleteAllOnSubmit(entityCollection) Not implemented very well...

Linq To Sql Cascading deletes:

Linq To Sql Cascading deletes Cascading delete = delete child rows when you delete a parent Cascading delete constraints are allowed in the DB But LINQ to SQL ignores them Do it yourself DeleteAllOnSubmit(Children) DeleteOnSubmit(Parent)

Linq To Sql Updating data:

Linq To Sql Updating data After SubmitChanges() is called Modified objects in the object graph are identified. New objects to be inserted Retrieved objects to be deleted Retrieved objects whose persistent members have changed Changes are ordered based on foreign key constraints. Insert, update and delete statements are constructed with modified current values in the set clause and original values in the where clause for optimistic concurrency conflict detection Database connection is opened and a transaction is started. If there are any errors, the transaction is rolled back. If the transaction succeeds, the internal state of the DataContext is changed accordingly. Database-generated columns like autoincrement / GUID keys and timestamps are propagated back to the objects

Linq To Sql Updating data:

Linq To Sql Updating data You can inspect the changes that are tracked by the datacontext before submitting. ChangeSets public sealed class ChangeSet { public IList<object> AddedEntities { get; } public IList<object> ModifiedEntities { get; } public IList<object> RemovedEntities { get; } public override string ToString(); }

Linq To Sql Updating data:

Linq To Sql Updating data Validation Property validation Entity validation ChangeSet validation

Linq To Sql Attaching entities:

Linq To Sql Attaching entities DataContext.Attach() Attach an existing entity to a datacontext While keeping optimistic concurrency behaviour Used in N-Tier scenario’s

Linq To Sql Overriding CRUD operation:

Linq To Sql Overriding CRUD operation You can override insert, update and delete actions Via partial Entity Classes

Linq To Sql Transactions:

Linq To Sql Transactions .NET 2.0 transaction scope Nothing changes

Linq To SqlConcurrency:

Linq To Sql Concurrency

Linq To SqlCompiling queries:

Linq To Sql Compiling queries

Linq To SqlManual Mapping:

Linq To Sql Manual Mapping

Linq To Sql Advanced mapping:

Linq To Sql Advanced mapping

Linq To Sql Advanced mapping:

Linq To Sql Advanced mapping

Linq To Sql Advanced mapping:

Linq To Sql Advanced mapping

Linq To Sql Advanced mapping:

Linq To Sql Advanced mapping

Linq To Sql Advanced mapping:

Linq To Sql Advanced mapping

That’s all for now :

That’s all for now 

LINQ to SQL like tools:

LINQ to SQL like tools

linq alti online

Presentation Description

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Presentation Transcript

LINQ:

What is Linq?:

Introduction to C# 3.0:

Introduction to C# 3.0 Collection Initializers:

Introduction to C# 3.0 Extension methods:

Introduction to C# 3.0 Extension methods:

Replacing LINQ Extension Methods:

Introduction to C# 3.0 Type Inference:

Introduction to C# 3.0 Type Inference:

Introduction to C# 3.0 Anonymous types:

Introduction to C# 3.0 Automatic Properties:

Introduction to C# 3.0 Lambda expressions:

Introduction to C# 3.0 Lambda expressions:

Introduction to C# 3.0 Parameters to Lambda Expressions:

Introduction to C# 3.0 Lambda Body Can Be Single Expression or Statement Block:

Introduction to C# 3.0 Expression Trees:

Introduction to C# 3.0 Expression trees:

Linq To Objects:

Linq To Objects Hello, LINQ in C#:

Linq To Objects Hello, LINQ in VB:

Linq To Objects DEMO:

Linq To Objects Standard Query Operators:

Linq To Objects Positional Query Operators:

Linq To Objects Set Based Query Operators:

Linq To Objects Join Operators:

Linq To Objects Ordering operators:

Linq To Objects Conversion operators:

Linq To Objects DEMO:

Linq To Objects Projection: Creating New Types To Hold Query Results:

Linq To Objects Projection That Creates a Nested 1-Many Collection:

Linq To Objects LINQ Queries Are Lazy:

Linq To Objects Modifying a Query Before Execution:

Linq To Objects You are always working with IEnumerable:

Linq To Sql:

Linq To Sql Hello, Linq To Sql:

Linq To Sql Everything is SQL:

Linq To Sql When does the query go to the database?:

Linq To Sql Object Model:

Linq To Sql Object Model:

Linq To Sql Object Model:

Linq To Sql Object Model:

Linq To Sql Object Model:

Linq To Sql DataContext:

Linq To Sql DataContext:

Linq To Sql DataContext:

Linq To Sql Retrieving data:

Linq To Sql Object Identity:

Linq To Sql Relations:

Linq To Sql Eager loading / prefetching:

Linq To Sql Updating data :

Linq To Sql Cascading deletes :

Linq To Sql Updating data :

Linq To Sql Updating data :

Linq To Sql Updating data :

Linq To Sql Attaching entities :

Linq To Sql Overriding CRUD operation :

Linq To Sql Transactions :

Linq To Sql Concurrency:

Linq To Sql Compiling queries:

Linq To Sql Manual Mapping:

Linq To Sql Advanced mapping:

Linq To Sql Advanced mapping:

Linq To Sql Advanced mapping:

Linq To Sql Advanced mapping:

Linq To Sql Advanced mapping:

That’s all for now :

LINQ to SQL like tools:

Introduction to C# 3.0Collection Initializers:

Introduction to C# 3.0Extension methods:

Introduction to C# 3.0Type Inference:

Introduction to C# 3.0Type Inference:

Introduction to C# 3.0Anonymous types:

Introduction to C# 3.0Automatic Properties:

Introduction to C# 3.0Lambda expressions:

Introduction to C# 3.0Lambda expressions:

Linq To ObjectsConversion operators:

Linq To SqlHello, Linq To Sql:

Linq To SqlEverything is SQL:

Linq To SqlWhen does the query go to the database?:

Linq To SqlObject Model:

Linq To SqlObject Model:

Linq To SqlObject Model:

Linq To SqlObject Model:

Linq To SqlObject Model:

Linq To SqlDataContext:

Linq To SqlDataContext:

Linq To SqlDataContext:

Linq To SqlRetrieving data:

Linq To SqlObject Identity:

Linq To SqlRelations:

Linq To SqlEager loading / prefetching:

Linq To Sql Updating data:

Linq To Sql Cascading deletes:

Linq To Sql Updating data:

Linq To Sql Updating data:

Linq To Sql Updating data:

Linq To Sql Attaching entities:

Linq To Sql Overriding CRUD operation:

Linq To Sql Transactions:

Linq To SqlConcurrency:

Linq To SqlCompiling queries:

Linq To SqlManual Mapping: