FileDialogPermissionAttribute.Open 属性

获取或设置一个值，该值指示是否声明了通过文件对话框打开文件的权限。

**命名空间:**System.Security.Permissions
**程序集:**mscorlib（在 mscorlib.dll 中）

语法

声明
Public Property Open As Boolean
用法
Dim instance As FileDialogPermissionAttribute
Dim value As Boolean

value = instance.Open

instance.Open = value

public bool Open { get; set; }

public:
property bool Open {
    bool get ();
    void set (bool value);
}

/** @property */
public boolean get_Open ()

/** @property */
public void set_Open (boolean value)

public function get Open () : boolean

public function set Open (value : boolean)

属性值

如果声明了通过文件对话框打开文件的权限，则为 true；否则为 false。

示例

' This method demonstrates PermitOnly with the Open property set to true.
<FileDialogPermissionAttribute(SecurityAction.PermitOnly, Open:=True)> _
Public Shared Sub PermitOnlyMethod()
    Console.WriteLine("Executing PermitOnlyMethod.")
    Console.WriteLine("PermitOnly the Open permission.")
    PermitOnlyTest()
End Sub 'PermitOnlyMethod

// This method demonstrates PermitOnly with the Open property set to true.
[FileDialogPermissionAttribute(SecurityAction.PermitOnly, Open = true)]
public static void PermitOnlyMethod()
{
    Console.WriteLine("Executing PermitOnlyMethod.");
    Console.WriteLine("PermitOnly the Open permission.");
    PermitOnlyTest();

}

// This method demonstrates PermitOnly with the Open property set to true.

[FileDialogPermissionAttribute(SecurityAction::PermitOnly,Open=true)]
void PermitOnlyMethod()
{
   Console::WriteLine( "Executing PermitOnlyMethod." );
   Console::WriteLine( "PermitOnly the Open permission." );
   PermitOnlyTest();
}

// This method demonstrates PermitOnly with the Open property set to true.
/** @attribute FileDialogPermissionAttribute(SecurityAction.PermitOnly, 
    Open = true)
 */
public static void PermitOnlyMethod()
{
    Console.WriteLine("Executing PermitOnlyMethod.");
    Console.WriteLine("PermitOnly the Open permission.");
    PermitOnlyTest();
} //PermitOnlyMethod

平台

Windows 98、Windows 2000 SP4、Windows Millennium Edition、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：2.0、1.1、1.0

请参见

参考

FileDialogPermissionAttribute 类
FileDialogPermissionAttribute 成员
System.Security.Permissions 命名空间