Control.MapPathSecure(String) 方法
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
检索虚拟路径（绝对的或相对的）映射到的物理路径。
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 -> stringProtected Function MapPathSecure (virtualPath As String) As StringProtected Friend Function MapPathSecure (virtualPath As String) As String参数
- virtualPath
- String
相对 URL 或相对于根的 URL。
返回
请求文件的物理路径。
例外
virtualPath 为 null 或空字符串 ("")。
示例
以下示例使用 MapPathSecure 该方法获取包含 Page 或 UserControl 对象的虚拟目录的物理路径。
// 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
注解
此方法只能由有权读取文件的服务器控件使用，这些控件属于完全受信任的.dll文件，例如System.Web.dll。 这有助于防止安全漏洞。