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Center a Window to Screen

<Window x:Class="Windows.CenterScreen"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     Title="CenterScreen" Height="300" Width="300"     >   <Button Margin="15" Click="cmdCenter_Click">Center Me</Button> </Window> //File:Window.xaml.cs using System; using System.Collections.Generic; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Shapes; using System.ComponentModel; namespace Windows {     public partial class CenterScreen : System.Windows.Window     {         public CenterScreen()         {             InitializeComponent();         }         private void cmdCenter_Click(object sender, RoutedEventArgs e)         {                         double height = SystemParameters.WorkArea.Height;             double width = SystemParameters.WorkArea.Width;                         this.Top = (height - this.Height) / 2;                         this.Left = (width - this.Width) / 2;                               }     } }