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>

Clear Sort WPF DataGrid

WPF > Controls > ItemsControl > DataGrid > Clear Sort

_collectionView = (CollectionView)CollectionViewSource.GetDefaultView(dataGrid.Items);

_collectionView.SortDescriptions.Clear();

Convert Hex to SolidColorBrush

WPF > System.Windows.Media > BrushConverter

BrushConverter is used to convert a Brush object to or from another object type.

Example:

row.Background = (SolidColorBrush)(new BrushConverter().ConvertFrom("#FFA7CDF0"));

Get Current Row WPF DataGrid

WPF > Controls > ItemsControl > DataGrid > ItemContainerGenerator > ContainerFromIndex

Returns the element corresponding to the item at the given index.

Example

How to get current row if row is not selected.

var index = dataGrid.Items.IndexOf(dataGrid.CurrentItem);

var row = (DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromIndex(index);

Get rectangles from canvas WPF code behind

WPF > Controls > Layout > Canvas > Children


Example 

Get all rectangles from canvas.

private List<Rectangle> GetRectangles()

{

    return canvas.Children.OfType<Rectangle>().ToList();

}

Round line WPF code behind

WPF > Line 

Line line = new Line

{
 Stroke = Brushes.Blue,

 StrokeThickness = 18,

 StrokeStartLineCap = PenLineCap.Round,

 StrokeEndLineCap = PenLineCap.Round,

 Height= 50,

 X1 = 50,

 X2 = 100,

 Y1 = 10,

 Y2 = 10

};

canvas.Children.Add(line);