PermissionSet.RemovePermission(Type) 方法

定义

命名空间:

System.Security

程序集:

System.Security.Permissions.dll

程序集:

System.Runtime.dll

程序集:

System.Runtime.Extensions.dll

程序集:

mscorlib.dll

从集中删除某一类型的权限。

public:
 System::Security::IPermission ^ RemovePermission(Type ^ permClass);

public:
 virtual System::Security::IPermission ^ RemovePermission(Type ^ permClass);

public System.Security.IPermission RemovePermission (Type permClass);

public System.Security.IPermission? RemovePermission (Type? permClass);

public virtual System.Security.IPermission RemovePermission (Type permClass);

member this.RemovePermission : Type -> System.Security.IPermission

abstract member RemovePermission : Type -> System.Security.IPermission
override this.RemovePermission : Type -> System.Security.IPermission

Public Function RemovePermission (permClass As Type) As IPermission

Public Overridable Function RemovePermission (permClass As Type) As IPermission

参数

permClass

Type

要删除的权限类型。

返回

IPermission

从集中删除了的权限。

例外

InvalidOperationException

从 ReadOnlyPermissionSet 调用方法。

示例

下面的代码示例演示如何使用 RemovePermission 该方法从权限集中删除 a FileIOPermission 。 此代码示例是为 PermissionSet 类提供的一个更大示例的一部分。

// Remove FileIOPermission from the permission set.
ps5->RemovePermission( FileIOPermission::typeid );
Console::WriteLine( "The last permission set after removing FileIOPermission = {0}", ps5 );

// Remove FileIOPermission from the permission set.
ps5.RemovePermission(typeof(FileIOPermission));
Console.WriteLine("The last permission set after removing FileIOPermission = "
    + ps5.ToString());

' Remove FileIOPermission from the permission set.
ps5.RemovePermission(GetType(FileIOPermission))
Console.WriteLine("The last permission set after removing FileIOPermission = " & ps5.ToString())

注解

重要

不能从不受限制的权限集中删除权限。 尝试删除权限后，权限集将保持不受限制，并且不会引发异常。

以下 C# 代码尝试从FullTrust权限集中删除FileIOPermission，但不会删除该权限。

PolicyLevel myPol = PolicyLevel.CreateAppDomainLevel();  
PermissionSet myPermSet = myPol.GetNamedPermissionSet("FullTrust");  
myPermSet.RemovePermission(typeof(FileIOPermission));  

继承者说明

从PermissionSet中继承时，可以通过重写RemovePermissionImpl(Type)方法来更改方法的行为RemovePermission(Type)。