WebPermission.Intersect(IPermission) 方法

定义

命名空间:

System.Net

程序集:

System.Security.Permissions.dll

包:

System.Security.Permissions v9.0.0-rc.2.24473.5

Source:

WebPermission.cs

返回两个 WebPermission 实例的逻辑交集。

public:
 override System::Security::IPermission ^ Intersect(System::Security::IPermission ^ target);

public override System.Security.IPermission Intersect (System.Security.IPermission target);

override this.Intersect : System.Security.IPermission -> System.Security.IPermission

Public Overrides Function Intersect (target As IPermission) As IPermission

参数

target

IPermission

与当前实例进行比较的 WebPermission。

返回

IPermission

一个新的 WebPermission，表示当前实例和 target 参数的交集。 如果该交集为空，则该方法返回 null。

例外

ArgumentException

target 不为 null，或者不是 WebPermission 类型

示例

以下示例演示如何使用两个现有WebPermission实例WebPermission的逻辑交集创建 实例。

// Create a third WebPermission instance via the logical intersection of the previous
// two WebPermission instances.
WebPermission^ myWebPermission3 = (WebPermission^)(myWebPermission1->Intersect( myWebPermission2 ));

Console::WriteLine( "\nAttributes and Values of  the WebPermission instance after the Intersect are:\n" );
Console::WriteLine( myWebPermission3->ToXml() );

// Create a third WebPermission instance via the logical intersection of the previous
// two WebPermission instances.
WebPermission myWebPermission3 =(WebPermission) myWebPermission1.Intersect(myWebPermission2);

Console.WriteLine("\nAttributes and Values of  the WebPermission instance after the Intersect are:\n");   
Console.WriteLine(myWebPermission3.ToXml().ToString());

   ' Create a third WebPermission instance via the logical intersection of the previous
   ' two WebPermission instances.
   Dim myWebPermission3 As WebPermission = CType(myWebPermission1.Intersect(myWebPermission2), WebPermission)
   
   Console.WriteLine(ControlChars.Cr + "Attributes and Values of  the WebPermission instance after the Intersect are:" + ControlChars.Cr)
   Console.WriteLine(myWebPermission3.ToXml().ToString())
End Sub

注解

Intersect 返回一个 ， WebPermission 其中包含在 和当前 实例中通用 target 的那些权限。

此方法重写 Intersect 并实现以支持 IPermission 接口。