c# - 在DLL中使用Screen.Bounds-输出不一致(Using Screen.Bounds in DLL - Inconsistent output)

Question

In my WPF application I have to get the resolution including scaling factor for all connected screens.

(在我的WPF应用程序中，我必须获得所有连接屏幕的分辨率，包括缩放比例。)

I found out that Windows Forms includes this functionality ( Screen class), but WPF not.

(我发现Windows窗体包含此功能（ Screen类），但WPF不包含。)

To prevent mixing up WinForms and WPF code, I outsourced this functionality to a .NET Framework DLL.

(为了避免混淆WinForms和WPF代码，我将此功能外包给了.NET Framework DLL。)

Here is a code sample for getting the scaled resolution of the first screen (inside the DLL):

(这是一个代码示例，用于获取第一个屏幕（在DLL内部）的缩放分辨率：)

using System.Windows.Forms;

namespace Resolution
{
  public class FirstScreen
  {
    public string GetResolution()
    {
        return Screen.AllScreens[0].Bounds.Width.ToString() + "x" + Screen.AllScreens[0].Bounds.Height.ToString();
    }
  }
}

The result (using a full HD screen with 125% scaling):

(结果（使用具有125％缩放比例的全高清屏幕）：)

• If I embed the DLL in my WPF App, I always get the unscaled screen size (1920x1080).

  (如果将DLL嵌入到WPF应用程序中，则始终会得到未缩放的屏幕尺寸（1920x1080）。)

• If I embed the DLL in a C# console application, I always get the scaled size (1536x864).

  (如果我将DLL嵌入C＃控制台应用程序中，则始终可以得到缩放后的大小（1536x864）。)

Why do I get different results using the same DLL?

(为什么使用相同的DLL会得到不同的结果？)

And how can I get the scaled size of all screens in WPF, if this is the wrong way?

(如果这是错误的方法，如何在WPF中获得所有屏幕的缩放尺寸？)

EDIT:

(编辑：)

Here is the code of my simplified WPF App (for reconstructing the problem):

(这是我简化的WPF应用程序的代码（用于重建问题）：)

using System.Windows;
using Resolution;

namespace ScreenResProblem
{
  public partial class MainWindow : Window
  {
    public MainWindow()
    {
      InitializeComponent();
    }

    private void Window_Loaded(object sender, RoutedEventArgs e)
    {
      FirstScreen fs = new FirstScreen();
      tb.Text = fs.GetResolution();
    }
  }
}

And here the code of the console Application:

(这是控制台应用程序的代码：)

using System;
using Resolution;

namespace ConsoleRes
{
  class Program
  {
    static void Main(string[] args)
    {
      FirstScreen fs = new FirstScreen();
      Console.WriteLine(fs.GetResolution());
      Console.ReadKey();
    }
  }
}

  ask by User95 translate from so

Answer 1

等待大神答复