DatePicker WPF Example

System.Windows.Controls -> DatePicker

Represents a control that allows the user to select a date.

Example

<Window x:Class="WpfApp4.MainWindow"

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

    <Grid>

        <DatePicker HorizontalAlignment="Left" Margin="225,118,0,0" VerticalAlignment="Top" SelectedDateChanged="DatePicker_SelectedDateChanged"/>

    </Grid>

</Window>

private void DatePicker_SelectedDateChanged(object sender, SelectionChangedEventArgs e)

{

  var datePicker = sender as DatePicker;

  MessageBox.Show(datePicker.SelectedDate.ToString());

}

Display XAML window in the second display WPF

WPF > Windows > Forms > Screen

AllScreens gets an array of all displays on the system.

Example

Display window in the second display WPF

private void Window_Loaded(object sender, RoutedEventArgs e)

{

   var screen = System.Windows.Forms.Screen.AllScreens.Where(s => !s.Primary).First();

   var area = screen.WorkingArea;

   Left = area.Left;

   Top = area.Top;

   Width = area.Width;

   Height = area.Height;

}

GridViewColumnHeader WPF Example

WPF > Controls  > ContentControl > GridViewColumnHeader

GridViewColumnHeader object is a button control that is derived from ButtonBase. 

Column headers in a GridView view mode are GridViewColumnHeader objects.

Example

<Window x:Class="GridViewColumnHeader.MainWindow"

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

        xmlns:local="clr-namespace:GridViewColumnHeader"

        mc:Ignorable="d"

        Title="MainWindow" Height="350" Width="525">

    <Grid>

        <ListView>

            <ListView.View>

                <GridView>

                    <GridViewColumn>

                        <GridViewColumnHeader>Name

                            <GridViewColumnHeader.ContextMenu>

                                <ContextMenu>

                                    <MenuItem Header="Ascending" />

                                    <MenuItem Header="Descending" />

                                </ContextMenu>

                            </GridViewColumnHeader.ContextMenu>

                        </GridViewColumnHeader>

                    </GridViewColumn>

                </GridView>

            </ListView.View>

        </ListView>

    </Grid>

</Window>

Get Vertical ScrollBar Width WPF

WPF > Windows > SystemParameters > VerticalScrollBarWidth


This value indicates the width (in pixels) of a vertical scroll bar.

SystemParameters.VerticalScrollBarWidth

WPF SystemParameters Class

WPF > Windows > SystemParameters

• VerticalScrollBarWidth

Bind Width to another Width control WPF

WPF > Binding > Width

<Grid>

  <Grid.ColumnDefinitions>

    <ColumnDefinition 

Width="{Binding ElementName=controlName, Path=ActualWidth}"/>

  </Grid.ColumnDefinitions>

ScrollToTop DataGrid WPF

WPF> DataGrid > Scroll To Top

var border = VisualTreeHelper.GetChild(myDataGrid, 0) as Decorator;

if (border != null && border.Child !=null)

{

  var scrollViewer = border.Child as ScrollViewer;

  if (scrollViewer != null)

  {

    scrollViewer.ScrollToTop();

  }

}