using System.Runtime.InteropServices;
using System.Diagnostics;

public class ProcessManager
{
    [DllImport("user32.dll")]
    private static extern bool ShowWindow(IntPtr hWnd, uint windowStyle);

    [DllImport("user32.dll")]
    private static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int x, int y, int cx, int cy, uint uFlags);

    ProcessManager()
    {
      string processName = "vlc"; /* Your process name here */
      SearchProcessAndModifyState(processName);
    }

    void SearchProcessAndModifyState(string targetProcessName)
    {
        Process specifiedProcess = null;
        Process[] processes = Process.GetProcesses();
        for (int i = 0; i < processes.Length; i++)
        {
            Process process = processes[i];
            if (process.ProcessName == targetProcessName)
            {
                specifiedProcess = process;
                break;
            }
        }
        if (specifiedProcess != null)
        {
          ProcessManager.ShowWindow(specifiedProcess.MainWindowHandle, 1u);
          ProcessManager.SetWindowPos(specifiedProcess.MainWindowHandle, new IntPtr(-1), 0, 0, 0, 0, 3u);
        }
    }
}

myTopForm.TopMost = true;