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IStackWalk.Demand Method

  • Reference

Definition

Namespace:
System.Security
Assembly:
System.Runtime.dll
Assembly:
System.Runtime.Extensions.dll
Assembly:
mscorlib.dll
Assembly:
System.Security.Permissions.dll
Package:
System.Security.Permissions v10.0.0-preview.1.25080.5

Determines at run time whether all callers in the call stack have been granted the permission specified by the current permission object.

C# 
public void Demand();

Exceptions

SecurityException

A caller higher in the call stack does not have the permission specified by the current permission object.

-or-

A caller in the call stack has called Deny() on the current permission object.

Remarks

This 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. Demand succeeds only if no SecurityException is raised.

Applies to

Proizvod Verzije
.NET Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 2.0 (package-provided)