You can’t style the DataGridTextColumn because DataGridTextColumn does not derive from FrameworkElement (or FrameworkContentElement). Only FrameworkElement, etc supports styling. When you attempt to create a style in XAML for any type that is not a FrameworkElement or FrameworkContentElement you get that error message. How do you solve this? As with any problem, where there is … Read more
The RemovedItems items reflects the items removed from the selection, and not from the grid. Handle the PreviewKeyDown event, and use the SelectedItems property to delete the selected rows there: private void PreviewKeyDownHandler(object sender, KeyEventArgs e) { var grid = (DataGrid)sender; if ( Key.Delete == e.Key ) { foreach (var row in grid.SelectedItems) { … … Read more
You can do that in XAML by adding default style for DataGridRow under its resources section and declare event setter over there: <DataGrid> <DataGrid.Resources> <Style TargetType=”DataGridRow”> <EventSetter Event=”MouseDoubleClick” Handler=”Row_DoubleClick”/> </Style> </DataGrid.Resources> </DataGrid> OR In case want to do it in code behind. Set x:Name on grid, create style programatically and set the style as RowStyle. … Read more
In the DataGrid there is a Header section where the field Header Visibility could be set to None. Or in xaml for the Datagrid add the property HeadersVisibility=”None”
Firstly, null the data source: this.dataGridView.DataSource = null; Then clear the rows: this.dataGridView.Rows.Clear(); Then set the data source to the new list: this.dataGridView.DataSource = this.GetNewValues();
The same problem persist in WPF 4.0 version of DataGrid, and it is caused by the add-new row which it shows automatically for ObservableCollection ItemsSource. Setting IsReadOnly as True it’s too radical IMHO. I solved it by disabling CanUserAddRows property if you don’t need that behavior, but you still want cells to be modified: CanUserAddRows=”False”
Not using Mode=TwoWay for DataGridTextColumns solves one version of the problem, however it seems that this problem can appear out of nowhere for other reasons as well. (Anyone who has a good explanation as of why not using Mode=TwoWay solves this in the first place is probably close to a solution to this problem) The … Read more
The ItemsSource is always the same, a reference to your collection, no change, no update. You could null it out before: dgOrderDetail.ItemsSource = null; dgOrderDetail.ItemsSource = OrderDetailObjects; Alternatively you could also just refresh the Items: dgOrderDetail.ItemsSource = OrderDetailObjects; //Preferably do this somewhere else, not in the add method. dgOrderDetail.Items.Refresh(); I do not think you actually … Read more
Are you have: Enabled VirtualizingStackPanel.VirtualizationMode for a Grid? if not – try to set. Set VirtualizingStackPanel.IsVirtualizing=”true” for DataGrid Wrapped up a Grid by a StackPanel container? If yes – try to remove. Wrapped up a Grid by an external ScrollViewer control? If yes – try to remove. One more point, could you bind whole items … Read more
you can add the event handler in the ItemContainerStyle (which is the style applied to a row) : <DataGrid … > <DataGrid.ItemContainerStyle> <Style TargetType=”DataGridRow”> <EventSetter Event=”MouseDoubleClick” Handler=”Row_DoubleClick”/> </Style> </DataGrid.ItemContainerStyle> … </DataGrid> Then, in the handler, you can check if the row is selected private void Row_DoubleClick(object sender, MouseButtonEventArgs e) { // execute some code }