Binding problem in C# wpf
- by Cinaird
I have a problem whit binding in wpf i have a textbox where i can do some input, then i try to bind the textinput to a custom usercontrol. This work for the usercontrol within RowDetailsTemplate but not in the CellTemplate. For each object in the CellTemplate i get this error output:
System.Windows.Data Error: 4 : Cannot find source for binding with reference 'ElementName=ScaleTextBox'. BindingExpression:Path=Text; DataItem=null; target element is 'Chart' (Name=''); target property is 'MaxValue' (type 'Int32')
My code looks like this:
XAML
<ToolBarTray ToolBarTray.IsLocked="True" DockPanel.Dock="Top" Height="25">
<ToolBar Name="ButtonBar" >
<TextBox Height="23" Name="ScaleTextBox" Width="120" Text="400"/>
</ToolBar>
</ToolBarTray>
<DataGrid ItemsSource="{Binding Path=Items}" AutoGenerateColumns="False" IsReadOnly="True" RowHeight="25" RowDetailsVisibilityMode="VisibleWhenSelected">
<DataGrid.RowDetailsTemplate>
<DataTemplate>
<StackPanel Orientation="Vertical" >
<my:UserControl ItemsSource="{Binding Path=Samples}" MaxValue="{Binding ElementName=ScaleTextBox, Path=Text}"/>-->
</StackPanel>
</DataTemplate>
</DataGrid.RowDetailsTemplate>
<DataGrid.Columns>
<DataGridTemplateColumn MinWidth="150" Header="Chart" >
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<my:UserControl ItemsSource="{Binding Path=Samples}" MaxValue="{Binding ElementName=ScaleTextBox, Path=Text}"/><!-- this is the problem -->
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>
C#
public static readonly DependencyProperty MaxValueProperty = DependencyProperty.Register("MaxValue", typeof(int), typeof(PingChart), new FrameworkPropertyMetadata(MaxValuePropertyChanged));
private static void MaxValuePropertyChanged(DependencyObject source, DependencyPropertyChangedEventArgs e)
{
Console.WriteLine(e.NewValue);
}
What do i do wrong?
