CODEWITHSUNDEEP
c#wpf
user4137741
user4137741

Reputation:

Process Start And Show C#

I'm using C# (WPF)
I have full path of process and i start the process with with Process.Start() command. 

Process p = new Process();
p.shartInfo.FileName = fullPathOfFile;
p.Start();

Now, i want to show process that i'm start before (after Start() command).

i.e if i start the notepad and the user minimize the notepad and click on Start Notepad in my application i want to check if i running notepad before, if so then show the running notepad to user.

if p is running:
   Show p
else
   Start p


how can i do it in C#?
Thanks.

Upvotes: 2

Views: 1278

Answers (2)

tchelidze
tchelidze

Reputation: 8308

To check if process with following name is already running you can use Process.GetProcessesByName(processName) method.

In case process is running you can maximize it's window by using Pinvoke. Call ShowWindow with SW_SHOWMAXIMIZED Parameter.

Otherwise you can simply call Process.Start(processName) to start a process. Try following 

internal class MyClass
{
  //use this flag to maximize process window.
  const int SW_SHOWMAXIMIZED = 3;
  //use this flag to open process window normally.
  const int SW_SHOWNORMAL = 1;

  [DllImport("user32.dll")]
  static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);

  public static void Main(string[] args)
  {
    var processName = "notepad";
    var process = Process.GetProcessesByName(processName).FirstOrDefault();
    if (process != null)
      ShowWindow(process.MainWindowHandle, SW_SHOWNORMAL);
    else
      Process.Start(processName);
  }
}

Upvotes: 2

JustAndrei
JustAndrei

Reputation: 859

After the p.Start() call, p.Id gives you the process id. Later you can use Process.GetProcessById( id ) to find the running process.

To bring its window to front is a bit more complicated task. See http://www.codeproject.com/Articles/2976/Detect-if-another-process-is-running-and-bring-it

Upvotes: 1

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