How to open new Firefox window using C# System.Diagnostics.Process.Start

Question

Hello,

I'm using Visual Studio Community 2019 Version 16.8.4 with .NET Framework 4.8.04084 on a laptop computer developing a C# windows form program.

I want to open a new Firefox window from my program.

I can open a new tab in an existing Firefox window using the following code:

private void CreateNFLStats_Click(object sender, EventArgs e)  
          {  
               //// Got this here: https://learn.microsoft.com/en-us/troubleshoot/dotnet/csharp/start-internet-browser  
               string target = "https://www.nfl.com/stats/team-stats/offense/passing/2021/reg/all";  
  
               try  
               {  
                    System.Diagnostics.Process.Start("firefox.exe", target);  
                    Application.Exit();  
               }  
               catch (System.ComponentModel.Win32Exception noBrowser)  
               {  
                    if (noBrowser.ErrorCode == -2147467259)  
                         MessageBox.Show(noBrowser.Message);  
               }  
               catch (System.Exception other)  
               {  
                    MessageBox.Show(other.Message);  
               }  
  
          }  

How do I open the URL in a new Firefox Window?

Any help would be gratefully appreciated.

Thanks,
Tony

Answer 1

Try this:

Process.Start( "firefox.exe", "-new-window " + target )

Answer 2

Excellent Viorel!

That worked perfectly.

Thanks for your help.
Tony