windows form

If you resize the controls at runtime based on screen resolution (I presume you want to make everything smaller to fit all of the controls if the resolution is less than you want it to be) then you run the risk of making the program less useful to people who run with a lower resolution because they want the controls to be larger due to the quality of their vision.

You can get the current resolution of a screen using the screen class and figure out the math to resize the controls given the difference between your ideal size and the user's display size (looping through the control collection to make the adjustments (but I would not recommend it):

     Screen[] arr = Screen.AllScreens;

     for (int i = 0; i < arr.Length; i++)

     {

         MessageBox.Show(arr[i].BitsPerPixel.ToString(), "Bits Per Pixel");

         MessageBox.Show(arr[i].WorkingArea.Height.ToString(), "Height");

         MessageBox.Show(arr[i].WorkingArea.Width.ToString(), "Width");

      }