Forces a SecurityException at run time if all callers higher in the call stack have not been granted the permission specified by the current instance.
public:
virtual void Demand();public void Demand();abstract member Demand : unit -> unit
override this.Demand : unit -> unitPublic Sub Demand ()A caller higher in the call stack does not have the permission specified by the current instance.
-or-
A caller higher in the call stack has called Deny() on the current permission object.
RemarksThis method is typically used by secure libraries to ensure that callers have permission to access a resource. For example, a file class in a secure class library calls Demand for the necessary FileIOPermission before performing a file operation requested by the caller.
The permissions of the code that calls this method are not examined; the check begins from the immediate caller of that code and proceeds up the stack. The call stack is typically represented as growing down, so that methods higher in the call stack call methods lower in the call stack. Demand succeeds only if no SecurityException is raised.
Notes to InheritorsYou cannot override this method.
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