You can use Dispatcher.Invoke(Delegate, object[]) on the Application‘s (or any UIElement‘s) dispatcher. You can use it for example like this: Application.Current.Dispatcher.Invoke(new Action(() => { /* Your code here */ })); or someControl.Dispatcher.Invoke(new Action(() => { /* Your code here */ }));
You can use the SelectedItem property to get the currently selected object, which you can then cast into the correct type. For instance, if your DataGrid is bound to a collection of Customer objects you could do this: Customer customer = (Customer)myDataGrid.SelectedItem; Alternatively you can bind SelectedItem to your source class or ViewModel. <Grid DataContext=”MyViewModel”> … Read more
Sadly any DataGridColumn hosted under DataGrid.Columns is not part of Visual tree and therefore not connected to the data context of the datagrid. So bindings do not work with their properties such as Visibility or Header etc (although these properties are valid dependency properties!). Now you may wonder how is that possible? Isn’t their Binding … Read more
Here’s a workaround for Binding Columns in the DataGrid. Since the Columns property is ReadOnly, like everyone noticed, I made an Attached Property called BindableColumns which updates the Columns in the DataGrid everytime the collection changes through the CollectionChanged event. If we have this Collection of DataGridColumn’s public ObservableCollection<DataGridColumn> ColumnCollection { get; private set; } … Read more
If you try to set the DataGrid.CellStyle the DataContext will be the row, so if you want to change the colour based on one cell it might be easiest to do so in specific columns, especially since columns can have varying contents, like TextBlocks, ComboBoxes and CheckBoxes. Here is an example of setting all the … Read more
First of all, DataGridTextColumn (or any other supported dataGrid column) does not lie in the Visual tree of the DataGrid. Hence, by default it doesn’t inherit the DataContext of the DataGrid. However, it works for Binding DP only and for no other DP’s on DataGridColumn. Since they don’t lie in the same VisualTree, any attempt … Read more
Put the TextBlock in the HeaderTemplate of the column: <DataGridTemplateColumn x:Name=”col”> <DataGridTemplateColumn.HeaderTemplate> <DataTemplate> <TextBlock Text=”Current” ToolTip=”Price” ToolTipService.InitialShowDelay=”0″ ToolTipService.Placement=”Top” ToolTipService.ShowDuration=”999999″ RenderOptions.BitmapScalingMode=”NearestNeighbor”/> </DataTemplate> </DataGridTemplateColumn.HeaderTemplate> </DataGridTemplateColumn> …and find it in using the VisualTreeHelper: private void Button_Click(object sender, RoutedEventArgs e) { var columns = FindVisualChildren<System.Windows.Controls.Primitives.DataGridColumnHeader>(dataGrid)? .ToArray(); if (columns != null) { int columnIndex = 1; if (columns.Length > columnIndex) … Read more