This is a way to pop up a web page from a C# Form, either WPF or Winform. It opens a browser to a specific page, perfect for "help" pages or other pages you want to open up with a button.

Open a browser from a C# form

// start a new process
Process myProcess = new Process();

try
{
    // set shell execution
    myProcess.StartInfo.UseShellExecute = true; 
    // set the url
    myProcess.StartInfo.FileName = "http://www.mycompany.com/help.htm";
    myProcess.Start();
}
catch (Exception ex)
{
    // capture the exception and handle it 
}