EdmFunctions.Left(DbExpression, DbExpression) Method

Reference

Definition

Namespace:: System.Data.Common.CommandTrees.ExpressionBuilder

Assembly:: System.Data.Entity.dll

Important

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Creates a DbFunctionExpression that invokes the canonical 'Left' function with the specified arguments, which must have a string and integer numeric result type. The result type of the expression is string.

public:
[System::Runtime::CompilerServices::Extension]
 static System::Data::Common::CommandTrees::DbFunctionExpression ^ Left(System::Data::Common::CommandTrees::DbExpression ^ stringArgument, System::Data::Common::CommandTrees::DbExpression ^ length);

public static System.Data.Common.CommandTrees.DbFunctionExpression Left (this System.Data.Common.CommandTrees.DbExpression stringArgument, System.Data.Common.CommandTrees.DbExpression length);

static member Left : System.Data.Common.CommandTrees.DbExpression * System.Data.Common.CommandTrees.DbExpression -> System.Data.Common.CommandTrees.DbFunctionExpression

<Extension()>
Public Function Left (stringArgument As DbExpression, length As DbExpression) As DbFunctionExpression

Parameters

stringArgument: DbExpression

An expression that specifies the string from which to extract the leftmost substring.

length: DbExpression

An expression that specifies the length of the leftmost substring to extract from stringArgument.

Returns

DbFunctionExpression

A new DbFunctionExpression that returns the leftmost substring of length length from stringArgument.

Exceptions

ArgumentNullException

stringArgument or length is null.

ArgumentException

stringArgument is invalid.

Applies to