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();

  }

}

FrameworkElementFactory focus on load element

WPF > FrameworkElementFactory > AddHandler

FrameworkElementFactory textBox = new FrameworkElementFactory(typeof(TextBox));

textBox.AddHandler(TextBox.LoadedEvent, new RoutedEventHandler(OnTextBoxLoaded));

private void OnTextBoxLoaded(object sender, RoutedEventArgs e)

{

       TextBox textBox = sender as TextBox;

       if (textBox != null)

       {

              textBox.Focus();

       }

}

Disable row selection datagrid WPF

How to disable row selection in datagrid WPF?

Answer:

myDataGrid.IsHitTestVisible = false;

Find TextBox control ComboBox WPF

WPF > Controls > ItemsControl > ComboBox

Use FindName to find an element that has the provided identifier name.

PART_EditableTextBox

TextBox

Contains the text of the ComboBox

Example

var textBox = comboBox.Template.FindName("PART_EditableTextBox", comboBox) as TextBox;

Set DataGrid DataGridRow Background color WPF

WPF > DataGrid > DataGridRow > Background


<DataGrid.RowStyle>

  <Style TargetType="DataGridRow">

    <Style.Triggers>

      <DataTrigger Binding="{Binding IsValid}" Value="true">

        <Setter Property="Background" Value="Green"></Setter>

      </DataTrigger>

      <DataTrigger Binding="{Binding IsValid}" Value="false">

        <Setter Property="Background" Value="Red"></Setter>

      </DataTrigger>

    </Style.Triggers>

  </Style>

</DataGrid.RowStyle>