Using registry it will find the current window state

It will find that in which state your current window either in maximized or minimized or normal state.

string myState=null; Microsoft.Win32.RegistryKey myRegistryKeyApp = Microsoft.Win32.Registry.CurrentUser.CreateSubKey("<<Give Here Your Window Form Path>>"); myState = (string)myRegistryKeyApp.GetValue("WindowState"); if (myState != null && myState.CompareTo("Maximized") == 0) //Window Is In Maximized State else if (myState != null && myWindowsState.CompareTo("Minimized") == 0) //Window Is In Minimized State else //Window Is In Normal State