I have a project folder called XSL which contains xsl files used for transforming xml. I use the following code to fetch an xsl file:

string html = @"c:\temp\export.html";
XslCompiledTransform transform = new XslCompiledTransform();
Uri uri = new Uri(@"XSL\ToHtml.xsl", UriKind.Relative);
transform.Transform(CurrentXmlFile, html);
System.Diagnostics.Process.Start(html);

This works ok when debugging but when I deploy using clickonce and install it, I get an error - 'Could not find part of the path {my user path}\XSL\ToHtml.xsl'

What must I do to correctly reference this path?