WPF- screen Id changes after reboot , get right Id.

Question

0.00/5 (No votes)

See more:

, +

I have a wpf app and I was displaying multiple windows into multiple monitors.

C#

/// <summary>
      /// Display the panels received as a parameter over the screen fixe by static coordinates
      /// </summary>
      /// <param name="panel"></param>
      public static void ShowByCoordinates(Window window, int screenId, int LeftTransform, int TopTransform)
      {
          System.Drawing.Rectangle bounds = System.Drawing.Rectangle.Empty;
          System.Windows.Forms.Screen s0 = System.Windows.Forms.Screen.AllScreens[screenId];
          bounds = s0.WorkingArea;
          window.Left = bounds.X + LeftTransform;
          window.Top = bounds.Y + TopTransform;
          window.Show();

      }

that screen id parameter was get it from app.config file. Problem is those monitors/tvs change their ids if the pc is reset. I could not find a good way to get fixed identifiers from the monitors and convert them into screens where my windows can be displayed. I have look how to get monitors with

C#

<pre lang="C#">
ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM Win32_DesktopMonitor");Console.WriteLine(&quot;PNP Device ID: {0}&quot;, obj[&quot;PNPDeviceID&quot;]);

but I dont know how to convert them into screen or what property use to point them always.Any help would be very appreciate it.

Posted 6-Dec-15 22:05pm

Kinna-10626331

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Richard Deeming · Answer 1 · 2015-12-07T03:48:00

What you're calling "screen ID" is just the index of the screen within the array. You can't rely on it to identify the screen.

You'd probably have better luck using the DeviceName property[^]:

C#

public static void ShowByCoordinates(Window window, string screenName, int LeftTransform, int TopTransform)
{
    Screen s0 = Screen.AllScreens.FirstOrDefault(s => s.DeviceName == screenName) ?? Sreen.PrimaryScreen;
    Rectangle bounds = s0.WorkingArea;
    window.Left = bounds.X + LeftTransform;
    window.Top = bounds.Y + TopTransform;
    window.Show();
}