C#

arkiboys wrote:

creates an object

objectData = MethodName(Name);
if (objectData == null)
{
  // Handle that the object does not exist
}
else
{
  // Operate on the object
}

if (PrevInstance())<br />
{<br />
     MessageBox.Show("The program is already running");<br />
     Application.Exit();<br />
}

private static bool PrevInstance()<br />
{<br />
      if (Process.GetProcessesByName(Process.GetCurrentProcess().ProcessName).Length > 1)<br />
      {<br />
            return true;<br />
      }<br />
      return false;<br />
}