blocks|key|358651|text|Screen.FromControl、Screen.FromPoint和Screen.FromRectangle应该会在这方面帮助你。例如，在WinForms中，它将是：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|358652|class+MyForm+:+Form
{
++public+Rectangle+GetScreen()
++{
++++return+Screen.FromControl(this).Bounds;
++}
}|code-block|syntax|javascript|358653|我不知道WPF有没有类似的调用。因此，您需要执行类似于此扩展方法的操作。|358654|static+class+ExtensionsForWPF
{
++public+static+System.Windows.Forms.Screen+GetScreen(this+Window+window)
++{
++++return+System.Windows.Forms.Screen.FromHandle(new+WindowInteropHelper(window).Handle);
++}
}|358655|entityMap^0|0|I|J|G|10|K|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|P|$]]

<code>Screen.FromControl</code>, <code>Screen.FromPoint</code> and <code>Screen.FromRectangle</code> should help you with this. For example in WinForms it would be:

<pre><code>class MyForm : Form
{
 public Rectangle GetScreen()
 {
 return Screen.FromControl(this).Bounds;
 }
}
</code></pre>

I don't know of an equivalent call for WPF. Therefore, you need to do something like this extension method.

<pre><code>static class ExtensionsForWPF
{
 public static System.Windows.Forms.Screen GetScreen(this Window window)
 {
 return System.Windows.Forms.Screen.FromHandle(new WindowInteropHelper(window).Handle);
 }
}
</code></pre>

blocks|key|3357792|text|您可以使用此命令获取主屏幕的桌面工作空间边界：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3357793|System.Windows.SystemParameters.WorkArea|offset|length|style|CODE|3357794|这对于获取主屏幕的大小也很有用：|3357795|System.Windows.SystemParameters.PrimaryScreenWidth+System.Windows.SystemParameters.PrimaryScreenHeight|3357796|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/system.windows.systemparameters.workarea.aspx|1|http://msdn.microsoft.com/en-us/library/system.windows.systemparameters.primaryscreenwidth.aspx|2|http://msdn.microsoft.com/en-us/library/system.windows.systemparameters.primaryscreenheight.aspx^0|0|0|14|0|14|0|0|0|0|1E|1F|1F|0|1E|1|1F|1F|2|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Y|8|@$D|Z|E|10|F|G]]|9|@$D|11|E|12|1|13]]|A|$]]|$1|H|3|I|5|6|7|14|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|15|8|@$D|16|E|17|F|G]|$D|18|E|19|F|G]]|9|@$D|1A|E|1B|1|1C]|$D|1D|E|1E|1|1F]]|A|$]]|$1|L|3|-4|5|6|7|1G|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S]]|T|$5|O|P|Q|A|$R|U]]|V|$5|O|P|Q|A|$R|W]]]]

You can use this to get desktop workspace bounds of the primary screen:

<a href="http://msdn.microsoft.com/en-us/library/system.windows.systemparameters.workarea.aspx" rel="noreferrer"><code>System.Windows.SystemParameters.WorkArea</code></a>

This is also useful for getting just the size of the primary screen:

<a href="http://msdn.microsoft.com/en-us/library/system.windows.systemparameters.primaryscreenwidth.aspx" rel="noreferrer"><code>System.Windows.SystemParameters.PrimaryScreenWidth</code></a>
<a href="http://msdn.microsoft.com/en-us/library/system.windows.systemparameters.primaryscreenheight.aspx" rel="noreferrer"><code>System.Windows.SystemParameters.PrimaryScreenHeight</code></a>

blocks|key|3357878|text|此外，您可能还需要：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3357879|3357880|SystemParameters.VirtualScreenWidth|unordered-list-item|offset|length|3357881|SystemParameters.VirtualScreenHeight|3357882|3357883|以获得所有监视器的组合大小，而不是一个特定的监视器。|3357884|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/system.windows.systemparameters.virtualscreenwidth.aspx|1|http://msdn.microsoft.com/en-us/library/system.windows.systemparameters.virtualscreenheight.aspx^0|0|0|0|Z|0|0|0|10|1|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|X|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|Y|8|@]|9|@$F|Z|G|10|1|11]]|A|$]]|$1|H|3|I|5|E|7|12|8|@]|9|@$F|13|G|14|1|15]]|A|$]]|$1|J|3|-4|5|6|7|16|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|17|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]|U|$5|P|Q|R|A|$S|V]]]]

Also you may need:

<ul>
<li><a href="http://msdn.microsoft.com/en-us/library/system.windows.systemparameters.virtualscreenwidth.aspx" rel="noreferrer">SystemParameters.VirtualScreenWidth</a></li>
<li><a href="http://msdn.microsoft.com/en-us/library/system.windows.systemparameters.virtualscreenheight.aspx" rel="noreferrer">SystemParameters.VirtualScreenHeight</a></li>
</ul>

to get the combined size of all monitors and not one in particular.

blocks|key|3358075|text|添加一个不使用WinForms而改为使用NativeMethods的解决方案。首先，您需要定义所需的本机方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3358076|public+static+class+NativeMethods
{
++++public+const+Int32+MONITOR_DEFAULTTOPRIMERTY+=+0x00000001;
++++public+const+Int32+MONITOR_DEFAULTTONEAREST+=+0x00000002;


++++[DllImport(+"user32.dll"+)]
++++public+static+extern+IntPtr+MonitorFromWindow(+IntPtr+handle,+Int32+flags+);


++++[DllImport(+"user32.dll"+)]
++++public+static+extern+Boolean+GetMonitorInfo(+IntPtr+hMonitor,+NativeMonitorInfo+lpmi+);


++++[Serializable,+StructLayout(+LayoutKind.Sequential+)]
++++public+struct+NativeRectangle
++++{
++++++++public+Int32+Left;
++++++++public+Int32+Top;
++++++++public+Int32+Right;
++++++++public+Int32+Bottom;


++++++++public+NativeRectangle(+Int32+left,+Int32+top,+Int32+right,+Int32+bottom+)
++++++++{
++++++++++++this.Left+=+left;
++++++++++++this.Top+=+top;
++++++++++++this.Right+=+right;
++++++++++++this.Bottom+=+bottom;
++++++++}
++++}


++++[StructLayout(+LayoutKind.Sequential,+CharSet+=+CharSet.Auto+)]
++++public+sealed+class+NativeMonitorInfo
++++{
++++++++public+Int32+Size+=+Marshal.SizeOf(+typeof(+NativeMonitorInfo+)+);
++++++++public+NativeRectangle+Monitor;
++++++++public+NativeRectangle+Work;
++++++++public+Int32+Flags;
++++}
}|code-block|syntax|javascript|3358077|然后像这样获取监视器句柄和监视器信息。|3358078|++++++++var+hwnd+=+new+WindowInteropHelper(+this+).EnsureHandle();
++++++++var+monitor+=+NativeMethods.MonitorFromWindow(+hwnd,+NativeMethods.MONITOR_DEFAULTTONEAREST+);

++++++++if+(+monitor+!=+IntPtr.Zero+)
++++++++{
++++++++++++var+monitorInfo+=+new+NativeMonitorInfo();
++++++++++++NativeMethods.GetMonitorInfo(+monitor,+monitorInfo+);

++++++++++++var+left+=+monitorInfo.Monitor.Left;
++++++++++++var+top+=+monitorInfo.Monitor.Top;
++++++++++++var+width+=+(+monitorInfo.Monitor.Right+-+monitorInfo.Monitor.Left+);
++++++++++++var+height+=+(+monitorInfo.Monitor.Bottom+-+monitorInfo.Monitor.Top+);
++++++++}|3358079|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Adding a solution that doesn't use WinForms but NativeMethods instead.
First you need to define the native methods needed.

<pre><code>public static class NativeMethods
{
 public const Int32 MONITOR_DEFAULTTOPRIMERTY = 0x00000001;
 public const Int32 MONITOR_DEFAULTTONEAREST = 0x00000002;


 [DllImport( "user32.dll" )]
 public static extern IntPtr MonitorFromWindow( IntPtr handle, Int32 flags );


 [DllImport( "user32.dll" )]
 public static extern Boolean GetMonitorInfo( IntPtr hMonitor, NativeMonitorInfo lpmi );


 [Serializable, StructLayout( LayoutKind.Sequential )]
 public struct NativeRectangle
 {
 public Int32 Left;
 public Int32 Top;
 public Int32 Right;
 public Int32 Bottom;


 public NativeRectangle( Int32 left, Int32 top, Int32 right, Int32 bottom )
 {
 this.Left = left;
 this.Top = top;
 this.Right = right;
 this.Bottom = bottom;
 }
 }


 [StructLayout( LayoutKind.Sequential, CharSet = CharSet.Auto )]
 public sealed class NativeMonitorInfo
 {
 public Int32 Size = Marshal.SizeOf( typeof( NativeMonitorInfo ) );
 public NativeRectangle Monitor;
 public NativeRectangle Work;
 public Int32 Flags;
 }
}
</code></pre>

And then get the monitor handle and the monitor info like this.

<pre><code> var hwnd = new WindowInteropHelper( this ).EnsureHandle();
 var monitor = NativeMethods.MonitorFromWindow( hwnd, NativeMethods.MONITOR_DEFAULTTONEAREST );

 if ( monitor != IntPtr.Zero )
 {
 var monitorInfo = new NativeMonitorInfo();
 NativeMethods.GetMonitorInfo( monitor, monitorInfo );

 var left = monitorInfo.Monitor.Left;
 var top = monitorInfo.Monitor.Top;
 var width = ( monitorInfo.Monitor.Right - monitorInfo.Monitor.Left );
 var height = ( monitorInfo.Monitor.Bottom - monitorInfo.Monitor.Top );
 }
</code></pre>

blocks|key|3357739|text|添加到ffpf|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3357740|Screen.FromControl(this).Bounds|code-block|syntax|javascript|3357741|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Add on to ffpf

<pre><code>Screen.FromControl(this).Bounds
</code></pre>

blocks|key|3358068|text|注意窗口的比例因子(100%25+/+125%25+/+150%25+/+200%25)。您可以使用以下代码来获取实际屏幕大小：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3358069|SystemParameters.FullPrimaryScreenHeight
SystemParameters.FullPrimaryScreenWidth|code-block|syntax|javascript|3358070|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Beware of the scale factor of your windows (100% / 125% / 150% / 200%).
You can get the real screen size by using the following code:

<pre><code>SystemParameters.FullPrimaryScreenHeight
SystemParameters.FullPrimaryScreenWidth
</code></pre>

blocks|key|3358002|text|我想在打开我的第一个窗口之前获得屏幕分辨率，所以这里有一个快速的解决方案，在实际测量屏幕尺寸之前打开一个不可见的窗口(你需要调整窗口参数以确保两个窗口在同一个屏幕上都是开放的-主要是WindowStartupLocation很重要)|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3358003|Window+w+=+new+Window();
w.ResizeMode+=+ResizeMode.NoResize;
w.WindowState+=+WindowState.Normal;
w.WindowStyle+=+WindowStyle.None;
w.Background+=+Brushes.Transparent;
w.Width+=+0;
w.Height+=+0;
w.AllowsTransparency+=+true;
w.IsHitTestVisible+=+false;
w.WindowStartupLocation+=+WindowStartupLocation.Manual;
w.Show();
Screen+scr+=+Screen.FromHandle(new+WindowInteropHelper(w).Handle);
w.Close();|code-block|syntax|javascript|3358004|entityMap^0|2J|L|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

I wanted to have the screen resolution before opening the first of my windows, so here a quick solution to open an invisible window before actually measuring screen dimensions (you need to adapt the window parameters to your window in order to ensure that both are openend on the same screen - mainly the <code>WindowStartupLocation</code> is important)

<pre><code>Window w = new Window();
w.ResizeMode = ResizeMode.NoResize;
w.WindowState = WindowState.Normal;
w.WindowStyle = WindowStyle.None;
w.Background = Brushes.Transparent;
w.Width = 0;
w.Height = 0;
w.AllowsTransparency = true;
w.IsHitTestVisible = false;
w.WindowStartupLocation = WindowStartupLocation.Manual;
w.Show();
Screen scr = Screen.FromHandle(new WindowInteropHelper(w).Handle);
w.Close();
</code></pre>

blocks|key|361333|text|我需要设置窗口应用程序的最大大小。如果应用程序显示在主屏幕或辅助屏幕中，这一点可能会相应地改变。为了解决这个问题，我们创建了一个简单的方法，下面我将向您展示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|361334|///+<summary>
///+Set+the+max+size+of+the+application+window+taking+into+account+the+current+monitor
///+</summary>
public+static+void+SetMaxSizeWindow(ioConnect+_receiver)
{
++++Point+absoluteScreenPos+=+_receiver.PointToScreen(Mouse.GetPosition(_receiver));

++++if+(System.Windows.SystemParameters.VirtualScreenLeft+==+System.Windows.SystemParameters.WorkArea.Left)
++++{
++++++++//Primary+Monitor+is+on+the+Left
++++++++if+(absoluteScreenPos.X+<=+System.Windows.SystemParameters.PrimaryScreenWidth)
++++++++{
++++++++++++//Primary+monitor
++++++++++++_receiver.WindowApplication.MaxWidth+=+System.Windows.SystemParameters.WorkArea.Width;
++++++++++++_receiver.WindowApplication.MaxHeight+=+System.Windows.SystemParameters.WorkArea.Height;
++++++++}
++++++++else
++++++++{
++++++++++++//Secondary+monitor
++++++++++++_receiver.WindowApplication.MaxWidth+=+System.Windows.SystemParameters.VirtualScreenWidth+-+System.Windows.SystemParameters.WorkArea.Width;
++++++++++++_receiver.WindowApplication.MaxHeight+=+System.Windows.SystemParameters.VirtualScreenHeight;
++++++++}
++++}

++++if+(System.Windows.SystemParameters.VirtualScreenLeft+<+0)
++++{
++++++++//Primary+Monitor+is+on+the+Right
++++++++if+(absoluteScreenPos.X+>+0)
++++++++{
++++++++++++//Primary+monitor
++++++++++++_receiver.WindowApplication.MaxWidth+=+System.Windows.SystemParameters.WorkArea.Width;
++++++++++++_receiver.WindowApplication.MaxHeight+=+System.Windows.SystemParameters.WorkArea.Height;
++++++++}
++++++++else
++++++++{
++++++++++++//Secondary+monitor
++++++++++++_receiver.WindowApplication.MaxWidth+=+System.Windows.SystemParameters.VirtualScreenWidth+-+System.Windows.SystemParameters.WorkArea.Width;
++++++++++++_receiver.WindowApplication.MaxHeight+=+System.Windows.SystemParameters.VirtualScreenHeight;
++++++++}
++++}
}|code-block|syntax|javascript|361335|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I needed to set the maximum size of my window application. This one could changed accordingly the application is is been showed in the primary screen or in the secondary. To overcome this problem e created a simple method that i show you next:

<pre><code>/// &lt;summary&gt;
/// Set the max size of the application window taking into account the current monitor
/// &lt;/summary&gt;
public static void SetMaxSizeWindow(ioConnect _receiver)
{
 Point absoluteScreenPos = _receiver.PointToScreen(Mouse.GetPosition(_receiver));

 if (System.Windows.SystemParameters.VirtualScreenLeft == System.Windows.SystemParameters.WorkArea.Left)
 {
 //Primary Monitor is on the Left
 if (absoluteScreenPos.X &lt;= System.Windows.SystemParameters.PrimaryScreenWidth)
 {
 //Primary monitor
 _receiver.WindowApplication.MaxWidth = System.Windows.SystemParameters.WorkArea.Width;
 _receiver.WindowApplication.MaxHeight = System.Windows.SystemParameters.WorkArea.Height;
 }
 else
 {
 //Secondary monitor
 _receiver.WindowApplication.MaxWidth = System.Windows.SystemParameters.VirtualScreenWidth - System.Windows.SystemParameters.WorkArea.Width;
 _receiver.WindowApplication.MaxHeight = System.Windows.SystemParameters.VirtualScreenHeight;
 }
 }

 if (System.Windows.SystemParameters.VirtualScreenLeft &lt; 0)
 {
 //Primary Monitor is on the Right
 if (absoluteScreenPos.X &gt; 0)
 {
 //Primary monitor
 _receiver.WindowApplication.MaxWidth = System.Windows.SystemParameters.WorkArea.Width;
 _receiver.WindowApplication.MaxHeight = System.Windows.SystemParameters.WorkArea.Height;
 }
 else
 {
 //Secondary monitor
 _receiver.WindowApplication.MaxWidth = System.Windows.SystemParameters.VirtualScreenWidth - System.Windows.SystemParameters.WorkArea.Width;
 _receiver.WindowApplication.MaxHeight = System.Windows.SystemParameters.VirtualScreenHeight;
 }
 }
}
</code></pre>

blocks|key|3358059|text|这是一个“中心屏幕DotNet+4.5+solution"，使用的是SystemParameters而不是System.Windows.Forms或My.Compuer.Screen：因为Windows+8+has+changed是屏幕尺寸计算，所以我使用它的唯一方式是这样(包括任务栏计算)：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3358060|Private+Sub+Window_Loaded(ByVal+sender+As+System.Object,+ByVal+e+As+System.Windows.RoutedEventArgs)+Handles+MyBase.Loaded
++++Dim+BarWidth+As+Double+=+SystemParameters.VirtualScreenWidth+-+SystemParameters.WorkArea.Width
++++Dim+BarHeight+As+Double+=+SystemParameters.VirtualScreenHeight+-+SystemParameters.WorkArea.Height
++++Me.Left+=+(SystemParameters.VirtualScreenWidth+-+Me.ActualWidth+-+BarWidth)+/+2
++++Me.Top+=+(SystemParameters.VirtualScreenHeight+-+Me.ActualHeight+-+BarHeight)+/+2+++++++++
End+Sub|code-block|syntax|javascript|3358061|​|3358062|📷|atomic|3358063|3358064|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/system.windows.systemparameters_properties.aspx|1|http://msdn.microsoft.com/en-us/library/system.windows.systemparameters.aspx|2|http://msdn.microsoft.com/en-us/library/system.windows.forms.screen.aspx|3|http://msdn.microsoft.com/en-us/library/hswx1e8z%2528v=vs.90%2529.aspx|4|http://msdn.microsoft.com/en-us/library/windows/desktop/ms724385%2528v=vs.85%2529.aspx|5|IMAGE|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/dd4ccbe9712026cea50b1f88fd97feee.jpeg|imageAlt^0|9|J|0|Y|G|1|1H|K|2|22|H|3|2M|L|4|0|0|0|0|1|5|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@]|9|@$A|1B|B|1C|1|1D]|$A|1E|B|1F|1|1G]|$A|1H|B|1I|1|1J]|$A|1K|B|1L|1|1M]|$A|1N|B|1O|1|1P]]|C|$]]|$1|D|3|E|5|F|7|1Q|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|1R|8|@]|9|@]|C|$]]|$1|K|3|L|5|M|7|1S|8|@]|9|@$A|1T|B|1U|1|1V]]|C|$]]|$1|N|3|J|5|6|7|1W|8|@]|9|@]|C|$]]|$1|O|3|-4|5|6|7|1X|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]|W|$5|R|S|T|C|$U|X]]|Y|$5|R|S|T|C|$U|Z]]|10|$5|R|S|T|C|$U|11]]|12|$5|R|S|T|C|$U|13]]|14|$5|15|S|16|C|$17|18|19|-4]]]]

This is a "Center Screen <a href="http://msdn.microsoft.com/en-us/library/system.windows.systemparameters_properties.aspx" rel="nofollow noreferrer">DotNet 4.5 solution</a>", using <a href="http://msdn.microsoft.com/en-us/library/system.windows.systemparameters.aspx" rel="nofollow noreferrer">SystemParameters</a> instead of <a href="http://msdn.microsoft.com/en-us/library/system.windows.forms.screen.aspx" rel="nofollow noreferrer">System.Windows.Forms</a> or <a href="http://msdn.microsoft.com/en-us/library/hswx1e8z%28v=vs.90%29.aspx" rel="nofollow noreferrer">My.Compuer.Screen</a>:
Since <a href="http://msdn.microsoft.com/en-us/library/windows/desktop/ms724385%28v=vs.85%29.aspx" rel="nofollow noreferrer">Windows 8 has changed</a> the screen dimension calculation, the only way it works for me looks like that (Taskbar calculation included):

<pre><code>Private Sub Window_Loaded(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles MyBase.Loaded
 Dim BarWidth As Double = SystemParameters.VirtualScreenWidth - SystemParameters.WorkArea.Width
 Dim BarHeight As Double = SystemParameters.VirtualScreenHeight - SystemParameters.WorkArea.Height
 Me.Left = (SystemParameters.VirtualScreenWidth - Me.ActualWidth - BarWidth) / 2
 Me.Top = (SystemParameters.VirtualScreenHeight - Me.ActualHeight - BarHeight) / 2 
End Sub
</code></pre>

<img src="https://i.stack.imgur.com/4M784.jpg" alt="Center Screen WPF XAML">

blocks|key|3358097|text|在C#+winforms中，我通过以下方法获得了起始点(当我们有多个监视器/显示，一个窗体调用另一个时)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3358098|private+Point+get_start_point()
++++{
++++++++return
++++++++++++new+Point(Screen.GetBounds(parent_class_with_form.ActiveForm).X,
++++++++++++++++++++++Screen.GetBounds(parent_class_with_form.ActiveForm).Y
++++++++++++++++++++++);
++++}|code-block|syntax|javascript|3358099|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

in C# winforms I have got start point (for case when we have several monitor/diplay and one form is calling another one) with help of the following method:

<pre><code>private Point get_start_point()
 {
 return
 new Point(Screen.GetBounds(parent_class_with_form.ActiveForm).X,
 Screen.GetBounds(parent_class_with_form.ActiveForm).Y
 );
 }
</code></pre>

blocks|key|3145421|text|WinForms|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3145422|对于多显示器设置，您还需要考虑X和Y位置：|3145423|Rectangle+activeScreenDimensions+=+Screen.FromControl(this).Bounds;
this.Size+=+new+Size(activeScreenDimensions.Width+%2B+activeScreenDimensions.X,+activeScreenDimensions.Height+%2B+activeScreenDimensions.Y);|code-block|syntax|javascript|3145424|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

<h2>WinForms</h2>
For multi-monitor setups you will also need account for the X and Y position:
<pre><code>Rectangle activeScreenDimensions = Screen.FromControl(this).Bounds;
this.Size = new Size(activeScreenDimensions.Width + activeScreenDimensions.X, activeScreenDimensions.Height + activeScreenDimensions.Y);
</code></pre>

blocks|key|3145457|text|下面的调试代码应该能很好地完成这个任务：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3145458|您可以浏览Screen+Class的属性|offset|length|3145459|使用Screen.AllScreens将所有显示放在一个数组或列表中，然后捕获当前显示的索引及其属性。|3145460|​|3145461|📷|atomic|3145462|3145463|C#+(由Telerik从VB转换而来-请仔细检查)|style|BOLD|3145464|++++++++{
++++List<Screen>+arrAvailableDisplays+=+new+List<Screen>();
++++List<string>+arrDisplayNames+=+new+List<string>();

++++foreach+(Screen+Display+in+Screen.AllScreens)
++++{
++++++++arrAvailableDisplays.Add(Display);
++++++++arrDisplayNames.Add(Display.DeviceName);
++++}

++++Screen+scrCurrentDisplayInfo+=+Screen.FromControl(this);
++++string+strDeviceName+=+Screen.FromControl(this).DeviceName;
++++int+idxDevice+=+arrDisplayNames.IndexOf(strDeviceName);

++++MessageBox.Show(this,+"Number+of+Displays+Found:+"+%2B+arrAvailableDisplays.Count.ToString()+%2B+Constants.vbCrLf+%2B+"ID:+"+%2B+idxDevice.ToString()+%2B+Constants.vbCrLf+%2B+"Device+Name:+"+%2B+scrCurrentDisplayInfo.DeviceName.ToString+%2B+Constants.vbCrLf+%2B+"Primary:+"+%2B+scrCurrentDisplayInfo.Primary.ToString+%2B+Constants.vbCrLf+%2B+"Bounds:+"+%2B+scrCurrentDisplayInfo.Bounds.ToString+%2B+Constants.vbCrLf+%2B+"Working+Area:+"+%2B+scrCurrentDisplayInfo.WorkingArea.ToString+%2B+Constants.vbCrLf+%2B+"Bits+per+Pixel:+"+%2B+scrCurrentDisplayInfo.BitsPerPixel.ToString+%2B+Constants.vbCrLf+%2B+"Width:+"+%2B+scrCurrentDisplayInfo.Bounds.Width.ToString+%2B+Constants.vbCrLf+%2B+"Height:+"+%2B+scrCurrentDisplayInfo.Bounds.Height.ToString+%2B+Constants.vbCrLf+%2B+"Work+Area+Width:+"+%2B+scrCurrentDisplayInfo.WorkingArea.Width.ToString+%2B+Constants.vbCrLf+%2B+"Work+Area+Height:+"+%2B+scrCurrentDisplayInfo.WorkingArea.Height.ToString,+"Current+Info+for+Display+'"+%2B+scrCurrentDisplayInfo.DeviceName.ToString+%2B+"'+-+ID:+"+%2B+idxDevice.ToString(),+MessageBoxButtons.OK,+MessageBoxIcon.Information);
}|code-block|syntax|javascript|3145465|VB+(原始代码)|3145466|+Dim+arrAvailableDisplays+As+New+List(Of+Screen)()
++++Dim+arrDisplayNames+As+New+List(Of+String)()

++++For+Each+Display+As+Screen+In+Screen.AllScreens
++++++++arrAvailableDisplays.Add(Display)
++++++++arrDisplayNames.Add(Display.DeviceName)
++++Next

++++Dim+scrCurrentDisplayInfo+As+Screen+=+Screen.FromControl(Me)
++++Dim+strDeviceName+As+String+=+Screen.FromControl(Me).DeviceName
++++Dim+idxDevice+As+Integer+=+arrDisplayNames.IndexOf(strDeviceName)

++++MessageBox.Show(Me,
++++++++++++++++++++"Number+of+Displays+Found:+"+%2B+arrAvailableDisplays.Count.ToString+&+vbCrLf+&
++++++++++++++++++++"ID:+"+&+idxDevice.ToString+%2B+vbCrLf+&
++++++++++++++++++++"Device+Name:+"+&+scrCurrentDisplayInfo.DeviceName.ToString+%2B+vbCrLf+&
++++++++++++++++++++"Primary:+"+&+scrCurrentDisplayInfo.Primary.ToString+%2B+vbCrLf+&
++++++++++++++++++++"Bounds:+"+&+scrCurrentDisplayInfo.Bounds.ToString+%2B+vbCrLf+&
++++++++++++++++++++"Working+Area:+"+&+scrCurrentDisplayInfo.WorkingArea.ToString+%2B+vbCrLf+&
++++++++++++++++++++"Bits+per+Pixel:+"+&+scrCurrentDisplayInfo.BitsPerPixel.ToString+%2B+vbCrLf+&
++++++++++++++++++++"Width:+"+&+scrCurrentDisplayInfo.Bounds.Width.ToString+%2B+vbCrLf+&
++++++++++++++++++++"Height:+"+&+scrCurrentDisplayInfo.Bounds.Height.ToString+%2B+vbCrLf+&
++++++++++++++++++++"Work+Area+Width:+"+&+scrCurrentDisplayInfo.WorkingArea.Width.ToString+%2B+vbCrLf+&
++++++++++++++++++++"Work+Area+Height:+"+&+scrCurrentDisplayInfo.WorkingArea.Height.ToString,
++++++++++++++++++++"Current+Info+for+Display+'"+&+scrCurrentDisplayInfo.DeviceName.ToString+&+"'+-+ID:+"+&+idxDevice.ToString,+MessageBoxButtons.OK,+MessageBoxIcon.Information)|3145467|3145468|3145469|3145470|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.microsoft.com/en-us/dotnet/api/system.windows.forms.screen?view=netcore-3.1|1|IMAGE|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/9e1dd6f4a4bda19b32d1020f9d2f6ba9.png|imageAlt|2|https://ask.qcloudimg.com/http-save/yehe-900000/2489b4af19eeb0cd28a0540faba350af.png^0|0|5|C|0|0|0|0|0|1|1|0|0|0|2|0|0|0|2|0|0|0|0|1|2|0|0^^$0|@$1|2|3|4|5|6|7|1J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1K|8|@]|9|@$D|1L|E|1M|1|1N]]|A|$]]|$1|F|3|G|5|6|7|1O|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|1P|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|1Q|8|@]|9|@$D|1R|E|1S|1|1T]]|A|$]]|$1|M|3|I|5|6|7|1U|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|1V|8|@$D|1W|E|1X|P|Q]]|9|@]|A|$]]|$1|R|3|S|5|T|7|1Y|8|@]|9|@]|A|$U|V]]|$1|W|3|X|5|6|7|1Z|8|@$D|20|E|21|P|Q]]|9|@]|A|$]]|$1|Y|3|Z|5|T|7|22|8|@]|9|@]|A|$U|V]]|$1|10|3|I|5|6|7|23|8|@]|9|@]|A|$]]|$1|11|3|K|5|L|7|24|8|@]|9|@$D|25|E|26|1|27]]|A|$]]|$1|12|3|I|5|6|7|28|8|@]|9|@]|A|$]]|$1|13|3|-4|5|6|7|29|8|@]|9|@]|A|$]]]|14|$15|$5|16|17|18|A|$19|1A]]|1B|$5|1C|17|1D|A|$1E|1F|1G|-4]]|1H|$5|1C|17|1D|A|$1E|1I|1G|-4]]]]

This debugging code should do the trick well:
You can explore the properties of the <a href="https://docs.microsoft.com/en-us/dotnet/api/system.windows.forms.screen?view=netcore-3.1" rel="nofollow noreferrer">Screen Class</a>
Put all displays in an array or list using Screen.AllScreens then capture the index of the current display and its properties.
<a href="https://i.stack.imgur.com/iaKAg.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/iaKAg.png" alt="enter image description here" /></a>
C# (Converted from VB by Telerik - Please double check)
<pre><code> {
 List&lt;Screen&gt; arrAvailableDisplays = new List&lt;Screen&gt;();
 List&lt;string&gt; arrDisplayNames = new List&lt;string&gt;();

 foreach (Screen Display in Screen.AllScreens)
 {
 arrAvailableDisplays.Add(Display);
 arrDisplayNames.Add(Display.DeviceName);
 }

 Screen scrCurrentDisplayInfo = Screen.FromControl(this);
 string strDeviceName = Screen.FromControl(this).DeviceName;
 int idxDevice = arrDisplayNames.IndexOf(strDeviceName);

 MessageBox.Show(this, &quot;Number of Displays Found: &quot; + arrAvailableDisplays.Count.ToString() + Constants.vbCrLf + &quot;ID: &quot; + idxDevice.ToString() + Constants.vbCrLf + &quot;Device Name: &quot; + scrCurrentDisplayInfo.DeviceName.ToString + Constants.vbCrLf + &quot;Primary: &quot; + scrCurrentDisplayInfo.Primary.ToString + Constants.vbCrLf + &quot;Bounds: &quot; + scrCurrentDisplayInfo.Bounds.ToString + Constants.vbCrLf + &quot;Working Area: &quot; + scrCurrentDisplayInfo.WorkingArea.ToString + Constants.vbCrLf + &quot;Bits per Pixel: &quot; + scrCurrentDisplayInfo.BitsPerPixel.ToString + Constants.vbCrLf + &quot;Width: &quot; + scrCurrentDisplayInfo.Bounds.Width.ToString + Constants.vbCrLf + &quot;Height: &quot; + scrCurrentDisplayInfo.Bounds.Height.ToString + Constants.vbCrLf + &quot;Work Area Width: &quot; + scrCurrentDisplayInfo.WorkingArea.Width.ToString + Constants.vbCrLf + &quot;Work Area Height: &quot; + scrCurrentDisplayInfo.WorkingArea.Height.ToString, &quot;Current Info for Display '&quot; + scrCurrentDisplayInfo.DeviceName.ToString + &quot;' - ID: &quot; + idxDevice.ToString(), MessageBoxButtons.OK, MessageBoxIcon.Information);
}
</code></pre>
VB (Original code)
<pre><code> Dim arrAvailableDisplays As New List(Of Screen)()
 Dim arrDisplayNames As New List(Of String)()

 For Each Display As Screen In Screen.AllScreens
 arrAvailableDisplays.Add(Display)
 arrDisplayNames.Add(Display.DeviceName)
 Next

 Dim scrCurrentDisplayInfo As Screen = Screen.FromControl(Me)
 Dim strDeviceName As String = Screen.FromControl(Me).DeviceName
 Dim idxDevice As Integer = arrDisplayNames.IndexOf(strDeviceName)

 MessageBox.Show(Me,
 &quot;Number of Displays Found: &quot; + arrAvailableDisplays.Count.ToString &amp; vbCrLf &amp;
 &quot;ID: &quot; &amp; idxDevice.ToString + vbCrLf &amp;
 &quot;Device Name: &quot; &amp; scrCurrentDisplayInfo.DeviceName.ToString + vbCrLf &amp;
 &quot;Primary: &quot; &amp; scrCurrentDisplayInfo.Primary.ToString + vbCrLf &amp;
 &quot;Bounds: &quot; &amp; scrCurrentDisplayInfo.Bounds.ToString + vbCrLf &amp;
 &quot;Working Area: &quot; &amp; scrCurrentDisplayInfo.WorkingArea.ToString + vbCrLf &amp;
 &quot;Bits per Pixel: &quot; &amp; scrCurrentDisplayInfo.BitsPerPixel.ToString + vbCrLf &amp;
 &quot;Width: &quot; &amp; scrCurrentDisplayInfo.Bounds.Width.ToString + vbCrLf &amp;
 &quot;Height: &quot; &amp; scrCurrentDisplayInfo.Bounds.Height.ToString + vbCrLf &amp;
 &quot;Work Area Width: &quot; &amp; scrCurrentDisplayInfo.WorkingArea.Width.ToString + vbCrLf &amp;
 &quot;Work Area Height: &quot; &amp; scrCurrentDisplayInfo.WorkingArea.Height.ToString,
 &quot;Current Info for Display '&quot; &amp; scrCurrentDisplayInfo.DeviceName.ToString &amp; &quot;' - ID: &quot; &amp; idxDevice.ToString, MessageBoxButtons.OK, MessageBoxIcon.Information)
</code></pre>
<a href="https://i.stack.imgur.com/HaDAa.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/HaDAa.png" alt="Screens List" /></a>

blocks|key|358884|text|我知道这是一个古老的问题，但其他人可能会从中获得一些价值|type|unstyled|depth|inlineStyleRanges|entityRanges|data|358885|int+formWidth+=+form.Width;
int+formHeight+=+form.Height;
int+formTop+=+form.Top;
int+formLeft+=+form.Left;

Screen+screen+=+Screen.PrimaryScreen;
Rectangle+rect+=+screen.Bounds;
int+screenWidth+=+rect.Width;
int+screenHeight+=+rect.Height;
int+screenTop+=+rect.Top;
int+screenLeft+=+rect.Left;|code-block|syntax|javascript|358886|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I Know it's an old question, but others may get some value from this
<pre><code>int formWidth = form.Width;
int formHeight = form.Height;
int formTop = form.Top;
int formLeft = form.Left;

Screen screen = Screen.PrimaryScreen;
Rectangle rect = screen.Bounds;
int screenWidth = rect.Width;
int screenHeight = rect.Height;
int screenTop = rect.Top;
int screenLeft = rect.Left;
</code></pre>

What I am looking for is the equivalent of <code>System.Windows.SystemParameters.WorkArea</code> for the monitor that the window is currently on.

Clarification: The window in question is <code>WPF</code>, not <code>WinForm</code>.

How can I get the active screen dimensions?

Windows

我正在寻找的是窗口当前所在的监视器的System.Windows.SystemParameters.WorkArea等价物。Clarification:有问题的窗口是WPF，不是WinForm。

问如何获取活动屏幕尺寸？
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问如何获取活动屏幕尺寸？
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