WebPermission.Union(IPermission) Method

Reference

Definition

Namespace:: System.Net

Assembly:: System.Security.Permissions.dll

Assembly:: System.dll

Package:: System.Security.Permissions v6.0.0

Package:: System.Security.Permissions v7.0.0

Package:: System.Security.Permissions v8.0.0

Package:: System.Security.Permissions v9.0.0-preview.2.24128.5

Source:: WebPermission.cs

Source:: WebPermission.cs

Source:: WebPermission.cs

Important

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

public:
 override System::Security::IPermission ^ Union(System::Security::IPermission ^ target);

public override System.Security.IPermission Union (System.Security.IPermission target);

override this.Union : System.Security.IPermission -> System.Security.IPermission

Public Overrides Function Union (target As IPermission) As IPermission

Parameters

target: IPermission

The WebPermission to combine with the current WebPermission.

Returns

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 null, the method returns a copy of the current WebPermission.

Exceptions

ArgumentException

target is not null or of type WebPermission.

Examples

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() );


// 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().ToString());

   ' Create another WebPermission that is the Union of previous two WebPermission 
   ' instances.
   Dim myWebPermission3 As WebPermission = CType(myWebPermission1.Union(myWebPermission2), WebPermission)
   Console.WriteLine(ControlChars.Cr + "Attributes and values of the WebPermission after the Union are : ")
   ' Display the attributes,values and children.
   Console.WriteLine(myWebPermission3.ToXml().ToString())
End Sub

Remarks

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

Applies to