Server.MapPath实现

Question

I am getting an error on the the file path to create the log file. I need to use Server.MapPath to implement a correct path but have never used one. Any suggestions?

Code:

FileStream fs = new FileStream(
                    Path.Combine(LogExtensionConfigSettings.LogFilePath, 
                                 "VanickWebServiceLogger.txt"), 
                                 FileMode.Append, 
                                 FileAccess.Write);

Answer 1

Server.MapPath maps a virtual file path to a physical one - if LogFilePath is already a physical path them MapPath in unnecessary.

If it's a virtual path then just call Server.MapPath on the virtual path:

string path = Server.MapPath(Path.Combine(LogExtensionConfigSettings.LogFilePath, 
                                 "VanickWebServiceLogger.txt");

FileStream fs = new FileStream(  path, 
                                 FileMode.Append, 
                                 FileAccess.Write);

Note that you should also enclose the FileStream in a using statement to ensire it gets closed if there is an exception:

using(FileStream fs = new FileStream(path, 
                                     FileMode.Append, 
                                     FileAccess.Write)
{
    // do stuff 
}