Open a folder and highlight a particular file with WPF
Explorer Command Line Arguments
http://support.microsoft.com/kb/152457
Explorer [/n] [/e] [(,)/root,<object>] [/select,<object>]/n Opens a new single-pane window for the default selection. This is usually the root of the drive Windows is installed on. If the window is already open, a duplicate opens./e Opens Windows Explorer in its default view./root,<object> Opens a window view of the specified object./select,<object> Opens a window view with the specified folder, file or application selected.
You will also want to put quotes around the filename like so:
startInfo.FileName = "explorer.exe";startInfo.Arguments = "/select,\"" + ConfigFile.File.FullName + "\"";