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This is my code.... i am facing problem with text box handler... problem with handler is that when i am try to enter any value in text box it is automatically event is calling for first key press only.... So is there any other event which allows user to enter data into text box an then the event should call like "On Blur"???? If anyone can do please help me bye providing code....Code is done everything dynamically no xaml is used
private void CreateDynamicGridView(DataSet dsBillingDetails)

          // Create a GridView
           int rowPosition = 0;
           for (int index = 1; index < dsBillingDetails.Tables.Count; index++)

                   DataGrid grdCharges = new DataGrid();
                   grdCharges.ItemsSource = dsBillingDetails.Tables[index].DefaultView;
                   grdCharges.AutoGenerateColumns = false;

                   Style grdHeaderStyle = this.FindResource("grdHeaderStyle") as Style;

                   <big>//Adding Button Dynamically</big>
                   DataGridTemplateColumn dgtcDel = new DataGridTemplateColumn();
                   FrameworkElementFactory fefDelButton = new FrameworkElementFactory(typeof(Button));
                   BitmapImage biDeleteIcon = new BitmapImage();

                   fefDelButton.SetBinding(Button.TagProperty, new Binding("LineItemID"));
                   fefDelButton.AddHandler(FrameworkElement.MouseLeftButtonDownEvent, new MouseButtonEventHandler(btnDelete_Click), true);
                   DataTemplate buttonTemplate = new DataTemplate();

                   dgtcDel.Header = "D";
                   dgtcDel.HeaderStyle = grdHeaderStyle;
                   buttonTemplate.VisualTree = fefDelButton;
                   dgtcDel.CellTemplate = buttonTemplate;
                   biDeleteIcon.UriSource = new Uri(@"..\Images\Deleteicon.png", UriKind.Relative);

                   fefDelButton.SetValue(Image.SourceProperty, biDeleteIcon);
                   fefDelButton.SetValue(Image.VisibilityProperty, Visibility.Visible);

                   //create a template column for text box
                   DataGridTemplateColumn dgtTextBox = new DataGridTemplateColumn();

                   //set title of column
                   dgtTextBox.Header = "Line Item Units";
                   dgtTextBox.Width = 150;

                   DataTemplate dtTextBox = new DataTemplate();
                   FrameworkElementFactory fefTextBox = new FrameworkElementFactory(typeof(System.Windows.Controls.TextBox));

              //<big>Adding Hanler THIS IS THE ISSUE</big>
                 fefTextBox.AddHandler(TextBox.TextChangedEvent, new TextChangedEventHandler(txtUnitCount_Changed));
                   dtTextBox.VisualTree = fefTextBox;
                   dgtTextBox.CellTemplate = dtTextBox;


                   //   grdCharges.Style = grdHeaderStyle;
                   Grid.SetRow(grdCharges, rowPosition + 1);
                   rowPosition = rowPosition + 2;
Updated 23-Oct-13 4:27am

1 solution

It is doing that because when you enter text into the textbox, the TextChanged event is fired.

I think "OnBlur" would be a viable alternative since it fires when the control loses focus.


Have a look at these articles:




It appears as though "LostFocus" is the event for you.
jing567 23-Oct-13 10:31am
Hello richcb,
I am familaiar with on blur event in, But right now i am using wpf windows application,now i has to attach event for FrameworkElementFactory.. here there is no such event like on blur... So if u have done anything in past... please provide me the code...
Richard C Bishop 23-Oct-13 10:38am
See my update to the solution. It speaks of the "LostFocus" event that is roughly the equivalent to "onblur" in web development.
jing567 23-Oct-13 10:42am
Can u provide me the c# code for UpdateSourceTrigger=LostFocus so that i can add to my code and check whether it is working or not.... and one more thing is that how to bind event for the text box if we place UpdateSourceTrigger... I mean for which event???

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