IPermission.Union(IPermission) Method

Definition

Namespace:: System.Security

Assemblies:: netstandard.dll, System.Runtime.dll

Assembly:: System.Runtime.Extensions.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Source:: IPermission.cs

Important

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

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

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

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

abstract member Union : System.Security.IPermission -> System.Security.IPermission

Public Function Union (target As IPermission) As IPermission

Parameters

target: IPermission

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

Returns

IPermission

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

Exceptions

ArgumentException

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

Remarks

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.

Applies to

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