StrongNameIdentityPermission.IsSubsetOf(IPermission) 方法

定义

命名空间:

System.Security.Permissions

程序集:

System.Security.Permissions.dll

包:

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

Source:

StrongNameIdentityPermission.cs

确定当前权限是否为指定权限的子集。

public:
 override bool IsSubsetOf(System::Security::IPermission ^ target);

public override bool IsSubsetOf (System.Security.IPermission target);

override this.IsSubsetOf : System.Security.IPermission -> bool

Public Overrides Function IsSubsetOf (target As IPermission) As Boolean

参数

target

IPermission

将要测试子集关系的权限。 此权限必须与当前权限属于同一类型。

返回

Boolean

如果当前权限是指定权限的子集，则为 true；否则为 false。

例外

ArgumentException

target 参数不为 null，并且与当前权限不属于同一类型。

示例

下面的代码示例演示了使用 IsSubsetOf 方法的结果，而不是如何使用 方法。 此示例是为 类提供的更大示例的一 StrongNameIdentityPermission 部分。 此示例的最佳用途是生成并执行整个示例，并查看其输出。

注意

代码示例旨在显示方法的行为，而不是演示其用法。 通常，安全基础结构使用权限类的方法;它们通常不用于应用程序。

// IsSubsetOf determines whether the current permission is a subset of the specified permission.
bool IsSubsetOfDemo()
{
    bool returnValue = true;

    StrongNameIdentityPermission^ snIdPerm1;
    StrongNameIdentityPermission^ snIdPerm2;

    snIdPerm1 = gcnew StrongNameIdentityPermission(blob, "MyCompany.MyDepartment.*", gcnew Version("1.0.0.0"));
    snIdPerm2 = gcnew StrongNameIdentityPermission(blob, "MyCompany.MyDepartment.MyFile", gcnew Version("1.0.0.0"));

    if (snIdPerm1->IsSubsetOf(snIdPerm2))
    {

        Console::WriteLine("MyCompany.MyDepartment.* is a subset " +
            "of MyCompany.MyDepartment.MyFile \n");
    }
    else
    {
        Console::WriteLine("MyCompany.MyDepartment.*" +
            " is not a subset of MyCompany.MyDepartment.MyFile \n");
    }

    return returnValue;
}

// IsSubsetOf determines whether the current permission is a subset of the specified permission.
private bool IsSubsetOfDemo()
{

    bool returnValue = true;

    StrongNameIdentityPermission snIdPerm1, snIdPerm2;

    snIdPerm1 = new StrongNameIdentityPermission(blob, "MyCompany.MyDepartment.*", new Version("1.0.0.0"));
    snIdPerm2 = new StrongNameIdentityPermission(blob, "MyCompany.MyDepartment.MyFile", new Version("1.0.0.0"));

    if (snIdPerm1.IsSubsetOf(snIdPerm2))
    {

        Console.WriteLine("MyCompany.MyDepartment.* is a subset " +
        "of MyCompany.MyDepartment.MyFile \n");
    }
    else
    {
        Console.WriteLine("MyCompany.MyDepartment.*" +
        " is not a subset of MyCompany.MyDepartment.MyFile \n");
    }

    return returnValue;
}

' IsSubsetOf determines whether the current permission is a subset of the specified permission.
Private Function IsSubsetOfDemo() As Boolean 
    
    Dim returnValue As Boolean = True
    
    Dim snIdPerm1, snIdPerm2 As StrongNameIdentityPermission
    
    snIdPerm1 = New StrongNameIdentityPermission(blob, "MyCompany.MyDepartment.*", New Version("1.0.0.0"))
    snIdPerm2 = New StrongNameIdentityPermission(blob, "MyCompany.MyDepartment.MyFile", New Version("1.0.0.0"))
    
    If snIdPerm1.IsSubsetOf(snIdPerm2) Then
        
        Console.WriteLine("MyCompany.MyDepartment.* is a subset " + "of MyCompany.MyDepartment.MyFile " + vbLf)
    Else
        Console.WriteLine("MyCompany.MyDepartment.*" + " is not a subset of MyCompany.MyDepartment.MyFile " + vbLf)
    End If
    
    Return returnValue

End Function 'IsSubsetOfDemo

注解

如果当前权限指定由指定权限完全包含的一组操作，则当前权限是指定权限的子集。 例如，其他属性相等，包含 Name 通配符表达式 MyCompany.MyDepartment.* 的属性的标识被标识为具有属性 MyCompany.MyDepartment.MyFile 的标识 Name 子集。