MemberExpression Class

MemberExpression Class

 

Represents accessing a field or property.

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

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

public class MemberExpression : Expression

NameDescription
System_CAPS_pubpropertyCanReduce

Indicates that the node can be reduced to a simpler node. If this returns true, Reduce() can be called to produce the reduced form.(Inherited from Expression.)

System_CAPS_pubpropertyExpression

Gets the containing object of the field or property.

System_CAPS_pubpropertyMember

Gets the field or property to be accessed.

System_CAPS_pubpropertyNodeType

Returns the node type of this Expression.(Overrides Expression.NodeType.)

System_CAPS_pubpropertyType

Gets the static type of the expression that this Expression represents.(Inherited from Expression.)

NameDescription
System_CAPS_protmethodAccept(ExpressionVisitor)

Dispatches to the specific visit method for this node type. For example, MethodCallExpression calls the VisitMethodCall.(Overrides Expression.Accept(ExpressionVisitor).)

System_CAPS_pubmethodEquals(Object)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_protmethodFinalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_protmethodMemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_pubmethodReduce()

Reduces this node to a simpler expression. If CanReduce returns true, this should return a valid expression. This method can return another node which itself must be reduced.(Inherited from Expression.)

System_CAPS_pubmethodReduceAndCheck()

Reduces this node to a simpler expression. If CanReduce returns true, this should return a valid expression. This method can return another node which itself must be reduced.(Inherited from Expression.)

System_CAPS_pubmethodReduceExtensions()

Reduces the expression to a known node type (that is not an Extension node) or just returns the expression if it is already a known type.(Inherited from Expression.)

System_CAPS_pubmethodToString()

Returns a textual representation of the Expression.(Inherited from Expression.)

System_CAPS_pubmethodUpdate(Expression)

Creates a new expression that is like this one, but using the supplied children. If all of the children are the same, it will return this expression.

System_CAPS_protmethodVisitChildren(ExpressionVisitor)

Reduces the node and then calls the visitor delegate on the reduced expression. The method throws an exception if the node is not reducible.(Inherited from Expression.)

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
{
    public string species;
}

public static void CreateFieldExpression()
{
    Animal horse = new Animal();

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

    Console.WriteLine(memberExpression.ToString());

    // This code produces the following output:
    //
    // value(CodeSnippets.FieldExample+Animal).species
}

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1

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

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