Determines at run time whether the current principal matches the principal specified by the current permission.
Assembly: mscorlib (in mscorlib.dll)
If no SecurityException is raised, succeeds.
This method acts against the principal attached to the calling thread.
Prior to calling the method, it is necessary to set the current application domain's principal policy to the enumeration value WindowsPrincipal. By default the principal policy is set to UnauthenticatedPrincipal. If you do not set the principal policy to WindowsPrincipal, a demand for principal permission will fail. The following code should be executed before the demand for principal permission occurs: