Open a file in Visual Studio at a specific line number

With VS2008 SP1, you can use the following command line to open a file at a specific line in an existing instance :

devenv /edit FILE_PATH /command "edit.goto FILE_LINE"

Source

Elaborating on Harold question and answer, I adapted the C++ solution (that I first adopted) to C#. It is much simpler (that is my first C# program!). One just need to create a project, add references to "envDTE" and "envDTE80" and drop the following code:

using System;
using System.Collections.Generic;
using System.Text;

namespace openStudioFileLine
{
    class Program    
    {
        [STAThread]
        static void Main(string[] args)     
        {
            try          
            {
                String filename = args[0];
                int fileline;
                int.TryParse(args[1], out fileline);
                EnvDTE80.DTE2 dte2;
                dte2 = (EnvDTE80.DTE2)System.Runtime.InteropServices.Marshal.GetActiveObject("VisualStudio.DTE");
                dte2.MainWindow.Activate();
                EnvDTE.Window w = dte2.ItemOperations.OpenFile(filename, EnvDTE.Constants.vsViewKindTextView);
                ((EnvDTE.TextSelection)dte2.ActiveDocument.Selection).GotoLine(fileline, true);
            }
            catch (Exception e)          
            {          
                Console.Write(e.Message);      
            }
        }
    }
}

One then just calls openStudioFileLine path_to_file numberOfLine.

Hope that may help !