LINQ Hints

LINQ :
  LINQ -- Language INtegrate Query.
  It supporst all .Net Language.
LINQ -- Data Provider:

1.    LINQ To Object
2.   LINQ To ADO.NET
3.   LINQ To XML

     LINQ To ADO.NET:

•              LINQ To SQL.
•              LINQ To Entity Framework.
•              LINQ To Dataset.

Query Basics:
         Query Expression consists of set of Clauses written in a declarative Syntax similar to SQL /XQuery.
  Query must:

•      Begin with from Clause.
•      End with select/Group clause.
•      Between one or more of following clauses using
•              Where,Join,from orderby,let,into.

Aggragate Clause:
    Select ,Distinct,Order bymTake,Takewhile,skip,skipwhile,wheremjoinmgroupbymlet,into

Two ways to write LINQ Query:

1.    Query syntax -- Use Query
2.    Method Syntax -- Uses Lambda Expression.

Lambda Expression:
    => Goes into Separate Parameters from method body.

LINQ To Object:

• Object supports either IEnumerable or Ienumerable<t>
• Array,ArrayList,Collection,Generic Collection.
• Using System.LINQ namespace.

LINQ To SQL:

•     Using System.Data.LINQ namespace.
•     Requires Entity  classes which you can build using the ORD.
•     ORD-- Object Relational Designer.
•     E-R data models will use for Other Database.

LINQ To Dataset:

•       Collections of data from ADO.NET and Put into Dataset or DataTable.

Destroying Threads

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