Getting formatexception

Question

I am getting a Formatexception from the below code. I can't seem to fix it. What is wrong? Thanks

var res = dropDown.SelectedValue;
var zip = String.Format("{0}/FileBrowser/FOLDERNAME/filer/" + temp + ", projectPath");

Answer 1

Due to {0} in the format string

"{0}/FileBrowser/FOLDERNAME/filer/" + temp + ", projectPath"

String.Format expects an argument after it.

Did you mean something like

var zip = String.Format("{0}/FileBrowser/FOLDERNAME/filer/{1}", projectPath, temp);