EdmFunctions.Length(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 'Length' function with the specified argument, which must have a string result type. The result type of the expression is Edm.Int32.

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

public static System.Data.Common.CommandTrees.DbFunctionExpression Length(this System.Data.Common.CommandTrees.DbExpression stringArgument);

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

<Extension()>
Public Function Length (stringArgument As DbExpression) As DbFunctionExpression

Parameters

stringArgument: DbExpression

An expression that specifies the string for which the length should be computed.

Returns

DbFunctionExpression

A new DbFunctionExpression that returns the length of stringArgument.

Exceptions

ArgumentNullException

stringArgument is null.

ArgumentException

stringArgument is invalid.

Applies to

ผลิตภัณฑ์	เวอร์ชัน
.NET Framework	4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1

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