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Control.MapPathSecure(String) 方法

定義

擷取虛擬絕對路徑或相對路徑所對應至的實體路徑。

protected:
 System::String ^ MapPathSecure(System::String ^ virtualPath);
protected public:
 System::String ^ MapPathSecure(System::String ^ virtualPath);
protected string MapPathSecure (string virtualPath);
protected internal string MapPathSecure (string virtualPath);
member this.MapPathSecure : string -> string
Protected Function MapPathSecure (virtualPath As String) As String
Protected Friend Function MapPathSecure (virtualPath As String) As String

參數

virtualPath
String

相對的或根相對路徑的 URL。

傳回

String

所要求檔案的實體路徑。

例外狀況

virtualPathnull 或空字串 ("")。

範例

下列範例會 MapPathSecure 使用 方法來取得包含 PageUserControl 物件的虛擬目錄實體路徑。

// An HttpException occurs if the server control does not,;
// have permissions to read the resulting mapped file. 
     output.Write("The Actual Path of the virtual directory : "+
     MapPathSecure(TemplateSourceDirectory)+"<br>");

    // Get all the files from the absolute path of 'MyControl';
    // using TemplateSourceDirectory which gives the virtual Directory.
        string [] myFiles=
        Directory.GetFiles(MapPathSecure(TemplateSourceDirectory));
        output.Write("The files in this Directory are <br>");

         // List all the files.
         for (int i=0;i<myFiles.Length;i++)
            output.Write(myFiles[i]+"<br>");
' An HttpException occurs if the server control does not,;
' have permissions to read the resulting mapped file.
output.Write("The Actual Path of the virtual directory : " & _
            MapPathSecure(TemplateSourceDirectory) & "<br>")

' Get all the files from the absolute path of 'MyControl';
' using TemplateSourceDirectory which gives the virtual Directory.
Dim myFiles As String() = Directory.GetFiles(MapPathSecure(TemplateSourceDirectory))
output.Write("The files in this Directory are <br>")

' List all the files.
Dim i As Integer
For i = 0 To myFiles.Length - 1
   output.Write(myFiles(i) & "<br>")
Next i

備註

這個方法只能由具有讀取檔案許可權的伺服器控制項使用,以及屬於完全信任.dll檔案的一部分,例如System.Web.dll。 這有助於防止安全性缺口。

適用於