Question

I had a file upload that was uploading to a folder in the web application root, i.e. I had

string savePath = @"~/documentation/"

string filename = Path.GetFileName(FileUploadControl.FileName);
FileUploadControl.SaveAs(Server.MapPath(savePath) + filename);

and that worked fine, uploading the file to WebApp/documentation/filename.abc

The problem is, I want to change the documentation location so I don’t have to move that folder when pushing from development to production. So I did the following

In Web.Config:

<appSettings>
    <add key="DocumentationLocation" value="C:\Documentation\" />
</appSettings>

In the code:

string savePath = ConfigurationSettings.AppSettings["DocumentationLocation"];

string filename = Path.GetFileName(FileUploadControl.FileName);
FileUploadControl.SaveAs(Server.MapPath(savePath) + filename);

I figured this would work identically, saving the file to the folder specified in the web.config.

However, I get an error when I try to upload a document now, that says:

‘C:\TM_Documentation\’ is not a valid virtual path.

any idea what i’m doing wrong so that i can fix it and save the files outside of the web app directory? Thanks.

Answer 1

Remove the Server.MapPath(), you don’t need the server to map the path for you, because you are giving a full path already.