WebPermission.Union(IPermission) Method

Reference

Definition

Namespace:: System.Net

Assembly:: System.Security.Permissions.dll

Assembly:: System.dll

Package:: System.Security.Permissions v10.0.0-preview.1.25080.5

Source:: WebPermission.cs

Source:: WebPermission.cs

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

Produkt	Versioner
.NET	8 (package-provided), 9 (package-provided), 10 (package-provided)
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0 (package-provided)
Windows Desktop	3.0, 3.1, 5, 6, 7, 8, 9, 10

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