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MemberExpression Class

Represents accessing a field or property.

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

'Declaration
Public NotInheritable Class MemberExpression _
	Inherits Expression
'Usage
Dim instance As MemberExpression

Use the Field, Property or PropertyOrField factory methods to create a MemberExpression.

The value of the NodeType property of a MemberExpression is MemberAccess.

The following example creates a MemberExpression that represents getting the value of a field member.

Class Animal
    Dim species As String 
End Class 

Shared Sub CreateFieldExpression()
    Dim horse As New Animal

    ' Create a MemberExpression that represents getting 
    ' the value of the 'species' field of class 'Animal'. 
    Dim memberExpression As System.Linq.Expressions.MemberExpression = _
        System.Linq.Expressions.Expression.Field( _
            System.Linq.Expressions.Expression.Constant(horse), _
            "species")

    Console.WriteLine(memberExpression.ToString())

    ' This code produces the following output: 
    
    ' value(ExpressionVB.FieldExample+Animal).species 
End Sub

System.Object
  System.Linq.Expressions.Expression
    System.Linq.Expressions.MemberExpression

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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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