IPermission.Union Method (IPermission)

 
System_CAPS_noteNote

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Creates a permission that is the union of the current permission and the specified permission.

Namespace:   System.Security
Assembly:  mscorlib (in mscorlib.dll)

abstract Union : 
        target:IPermission -> IPermission

Parameters

target
Type: System.Security.IPermission

A permission to combine with the current permission. It must be of the same type as the current permission.

Return Value

Type: System.Security.IPermission

A new permission that represents the union of the current permission and the specified permission.

Exception Condition
ArgumentException

The target parameter is not null and is not of the same type as the current permission.

The result of a call to Union is a permission that represents all the operations represented by both the current permission and the specified permission. Any demand that passes either permission passes their union.

The following statements are required to be true for all implementations of the Union method. X and Y represent IPermission objects that are not null.

  • X.Union(X) returns an object that has the same value as X.

  • X.Union(Y) returns an object that has the same value as the object returned by Y.Union(X).

  • X.Union(null) returns an object that has the same value as X.

The following code example demonstrates implementing the Union method. This code example is part of a larger example provided for the IPermission class.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 1.1
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