How to get monitor width and height in C# windows app?

Rajkumar R

Hi,

My machine in windows-7 & Screen resolution is (1366 * 768) Highly recommended.

float height = SystemInformation.VirtualScreen.Height;

float width = SystemInformation.VirtualScreen.Width;

double diagonal = Math.Sqrt(width * width + height * height);

The above code I have used to get width and height of the screen to calculate diagonal in windows application. But the problem here is when I change the resolution width and height also gets change. So I need a piece of code that should read height and weight to calculate diagonal size.

Please post solution for this post.

Thanks in Advance.

5 Replies

Know the answer? Post it — somebody with the same question will find it here.

shahid wani5y ago
1. class Program
2. {
3. static void Main(string[] args)
4. {
5. //Get monitor data
6. ManagementObjectSearcher searcher = new ManagementObjectSearcher(@"\root\wmi", @"SELECT * FROM WmiMonitorBasicDisplayParams");
7. //Calculate and output size for each monitor
8. foreach (ManagementObject managementObject in searcher.Get())
9. {
10. //Calculate monitor size
11. double width = (byte)managementObject["MaxHorizontalImageSize"] / 2.54;
12. double height = (byte)managementObject["MaxVerticalImageSize"] / 2.54;
13. double diagonal = Math.Sqrt(width * width + height * height);
14. //Output monitor size
15. Console.WriteLine("Monitor Size: {0:F1}\"", diagonal);
16. }
17. Console.ReadLine();
18. }
19. }
+1

Rajkumar R12y ago

Is there any way to get monitor size without depending screen resolution.?

Nitesh Kejriwal12y ago

I think the program can read the screen width and height are relevant to the resolution of the screen (that means only the software part and not the hardware part).

Rajkumar R12y ago

Hi Nitesh,

I have used System.Windows.Forms.Screen.PrimaryScreen.Bounds;
And
Even this code "Screen.PrimaryScreen.Bounds.Width & Screen.PrimaryScreen.Bounds.Height " returns height and width based on screen resolution.

Nitesh Kejriwal12y ago

Use Screen.PrimaryScreen.Bounds.Width and Screen.PrimaryScreen.Bounds.Height properties to get the actual width and height