Adds a single claim to this claims identity.
Assembly: mscorlib (in mscorlib.dll)
The claim is examined and if the subject is different than this claims identity, the Claim.Clone(ClaimsIdentity) method is invoked with this claims identity as the parameter to create a new claim with the correct subject.
This method has the SecurityCritical attribute applied to control which entities can add claims to the identity. Further down the pipe, authorization decisions are made based on the claims that are present in the Claims collection.
requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.