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Expression.ArrayIndex Method (Expression, Expression)

Creates a BinaryExpression that represents applying an array index operator to an array of rank one.

Namespace:  System.Linq.Expressions
Assembly:  System.Core (in System.Core.dll)

public static BinaryExpression ArrayIndex(
	Expression array,
	Expression index


Type: System.Linq.Expressions.Expression

An Expression to set the Left property equal to.

Type: System.Linq.Expressions.Expression

An Expression to set the Right property equal to.

Return Value

Type: System.Linq.Expressions.BinaryExpression
A BinaryExpression that has the NodeType property equal to ArrayIndex and the Left and Right properties set to the specified values.


array or index is null.


array.Type does not represent an array type.


array.Type represents an array type whose rank is not 1.


index.Type does not represent the Int32 type.

index must represent an index of type Int32.

The Method property of the resulting BinaryExpression is null, and both IsLifted and IsLiftedToNull are set to false. The Type property is equal to the element type of array.Type. The Conversion property is null.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5

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