Newbie question...
If I have a file that is in the root of the web app. How do I programmaticaly query the path of that file? ie, what directory it is in?
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4 Answers
System.Web.HttpServerUtility.MapPath( "~/filename.ext" );
will give you the physical (disk) path, which you would use with System.IO methods and such.
System.Web.Hosting.VirtualPathUtility.ToAbsolute( "~/filename.ext" );
will give you the "absolute" virtual path. This won't be the full url, but isn't necessarily the root of the domain, either. It could be something like
/admin/filename.ext
if the application is rooted in a subdirectory.
Comments
was close to what I was wanting..... except that didn't seem to compile or wasn't valid in the context I was calling it.
However I found what I needed with System.Web.HttpRuntime.AppDomainAppPath
3 Comments
harpo
Ah. That should be equivalent to HttpServerUtility.MapPath( "~" )
Keith Nicholas
If I use that, I get... Error 1 An object reference is required for the non-static field, method, or property 'System.Web.HttpServerUtility.MapPath(string)'
harpo
That's odd. Where are you calling it from?
If you are in your ASPX markup you can break out to C# and use the ResolveUrl method like so:
<%= Page.ResolveUrl("~/PathFromRoot/YourFile.pdf") %>
Comments
Old question, I know, but I found it while searching for a similar answer. Unless the API has changed, the reason why harpo's answer isn't working is because MapPath is an instance method, not a static method. But fear not--there's an instance of HttpServerUtility present in each instance of Controller--the Server property. So in your case, if you're within a controller (or, I suspect, a view):
var appRoot = Server.MapPath("~/");
That should do the trick!
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