Control.OpenFile Method
Gets a Stream used to read a file.
Assembly: System.Web (in System.Web.dll)
Parameters
- path
- Type: System.String
The path to the desired file.
| Exception | Condition |
|---|---|
| HttpException | Access to the specified file was denied. |
The OpenFile method returns a Stream object that can be used to read the contents of the file specified in the path parameter. The path parameter can be either a relative or root URL without a protocol (such as "~/mySite/myFile.txt), or a physical path, either local ("c:\mySite\myFile.txt") or UNC ("\\myServer\myFile.txt").
The OpenFile method uses file access security to control access to the specified file. If the current ASP.NET user does not have access to the file, then the file is not opened and an HttpException exception is thrown to indicate that access was denied. If the path parameter specified a relative path, the exception does not include information about the physical path to the requested file.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.