StrongNameIdentityPermission.FromXml(SecurityElement) 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

从 XML 编码重新构造具有指定状态的权限。

public:
 override void FromXml(System::Security::SecurityElement ^ e);

public override void FromXml (System.Security.SecurityElement e);

override this.FromXml : System.Security.SecurityElement -> unit

Public Overrides Sub FromXml (e As SecurityElement)

参数

e

SecurityElement

用于重新构造权限的 XML 编码。

例外

ArgumentNullException

e 参数为 null。

ArgumentException

e 参数不是有效的权限元素。

- 或 -

e 参数的版本号无效。

示例

下面的代码示例演示 方法的行为 FromXml 。 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。

    // ToXml creates an XML encoding of the permission and its current state;
    //FromXml reconstructs a permission with the specified state from the XML encoding.
    bool ToFromXmlDemo()
    {
        bool returnValue = true;
        StrongNameIdentityPermission^ snIdPerm1;
        StrongNameIdentityPermission^ snIdPerm2;
        snIdPerm1 = gcnew StrongNameIdentityPermission(blob, "MyCompany.MyDepartment.*", gcnew Version("1.0.0.0"));    
        snIdPerm2 = gcnew StrongNameIdentityPermission(PermissionState::None);
        snIdPerm2->FromXml(snIdPerm1->ToXml());
        Console::WriteLine("Result of ToFromXml = " + snIdPerm2->ToString() + "\n");

        return returnValue;
    }


public:

// ToXml creates an XML encoding of the permission and its current state;
//FromXml reconstructs a permission with the specified state from the XML encoding.
private bool ToFromXmlDemo()
{

    bool returnValue = true;

    StrongNameIdentityPermission snIdPerm1, snIdPerm2;

    snIdPerm1 = new StrongNameIdentityPermission(blob, "MyCompany.MyDepartment.*", new Version("1.0.0.0"));    
    snIdPerm2 = new StrongNameIdentityPermission(PermissionState.None);
    snIdPerm2.FromXml(snIdPerm1.ToXml());
    Console.WriteLine("Result of ToFromXml = " + snIdPerm2.ToString() + "\n");

    return returnValue;
}

' ToXml creates an XML encoding of the permission and its current state;
'FromXml reconstructs a permission with the specified state from the XML encoding.
Private Function ToFromXmlDemo() 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(PermissionState.None)
    snIdPerm2.FromXml(snIdPerm1.ToXml())
    Console.WriteLine("Result of ToFromXml = " + snIdPerm2.ToString() + vbLf)
    
    Return returnValue

End Function 'ToFromXmlDemo

注解

应用程序代码不使用此方法。