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WebPermission::Union Method

Returns the logical union between two instances of the WebPermission class.

Namespace:  System.Net
Assembly:  System (in System.dll)

virtual IPermission^ Union(
	IPermission^ target
) override


Type: System.Security::IPermission

The WebPermission to combine with the current WebPermission.

Return Value

Type: System.Security::IPermission
A WebPermission that represents the union of the current instance and the target parameter. If either WebPermission is Unrestricted, the method returns a WebPermission that is Unrestricted. If the target is nullptr, the method returns a copy of the current WebPermission.




target is not nullptr or of type WebPermission.

Union returns a WebPermission that contains all the permissions in both target and the current instance.

The following example takes the logical union of two WebPermission instances to create a third instance of WebPermission.

// Create another WebPermission that is the Union of previous two WebPermission 
// instances.
WebPermission^ myWebPermission3 = (WebPermission^)(myWebPermission1->Union( myWebPermission2 ));
Console::WriteLine( "\nAttributes and values of the WebPermission after the Union are : " );
// Display the attributes, values and children.
Console::WriteLine( myWebPermission3->ToXml() );

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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