SmtpPermission::IsSubsetOf Method (IPermission^)


Returns a value indicating whether the current permission is a subset of the specified permission.

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

virtual bool IsSubsetOf(
	IPermission^ target
) override


Type: System.Security::IPermission^

An IPermission that is to be tested for the subset relationship. This permission must be of the same type as the current permission.

Return Value

Type: System::Boolean

true if the current permission is a subset of the specified permission; otherwise, false.

Exception Condition

target is not an SmtpPermission.

The current permission is a subset of the specified permission if the current permission specifies a state that is wholly contained by the specified permission. If this method returns true, the current permission represents no more access to the protected resource than does the specified permission.

The following code example displays the subset relationship between two permissions.

static bool CheckSubSet(
    SmtpPermission^ permission)
    SmtpPermission^ allAccess = 
        gcnew SmtpPermission(PermissionState::Unrestricted);
    return permission->IsSubsetOf(allAccess);

.NET Framework
Available since 2.0
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