Click event handler in dynamic data Template in Grid view does not work correctly

[Nalini]

Hello,

 I am working on directing to new page in wizard on click of hyperlink in dynamic gird view data template.

I got some nice input specially adding events with XamlReader.Load() from http://www.telerik.com/forums/adding-click-event-handler-to-template link. Thank you for that!

Now, the problem is that my gird view  (attached image) has "Add User" link which should open next page at very first time click but since there are total 5 links (dynamic-can be less or more)  in first row , HyperlinkButtonClick() gets called 5 times and then it open new Add User page. 

 

Here is the code:

 

 string userDetailsTemplate =
                        "<DataTemplate xmlns='http://schemas.microsoft.com/client/2007'>" +
                            "<Grid HorizontalAlignment='Stretch'>" +
                                "<Grid.ColumnDefinitions>" +
                                    "<ColumnDefinition />" +
                                    "<ColumnDefinition />" +
                                "</Grid.ColumnDefinitions>" +
                            "<Grid.RowDefinitions>" +
                                "<RowDefinition />" +
                                "<RowDefinition />" +
                                "<RowDefinition />" +
                                "<RowDefinition />" +
                            "</Grid.RowDefinitions>" +
                                    "<TextBlock Text='{Binding [Username], Source={StaticResource Labels}}' Visibility='{Binding " + entp + ".Username, Converter={StaticResource VisibilityConverter}}'/>" +
                                    "<TextBlock Text='{Binding " + entp + ".Username}' Grid.Column='1' />" +
                                    "<TextBlock Text='{Binding [Phone], Source={StaticResource Labels}}' Grid.Row='1' Visibility='{Binding " + entp + ".Phone, Converter={StaticResource VisibilityConverter}}'/>" +
                                    "<TextBlock Text='{Binding " + entp + ".Phone}' Grid.Column='1'  Grid.Row='1' />" +
                                    "<TextBlock Text='{Binding [Email], Source={StaticResource Labels}}'  Grid.Row='2' Visibility='{Binding " + entp + ".Email, Converter={StaticResource VisibilityConverter}}'/>" +
                                    "<TextBlock Text='{Binding " + entp + ".Email}' Grid.Column='1'  Grid.Row='2' />" +
                                    "<HyperlinkButton Name='HLButton' Content='Add User' Visibility='{Binding " + entp + ".Username, Converter={StaticResource InvisibilityConverter}}'  Grid.Row='3'/>" +
                           "</Grid>" +
                     "</DataTemplate>";

                    DataTemplate newDT = (DataTemplate)XamlReader.Load(userDetailsTemplate);
                    externalidCol.CellTemplate = newDT;
                    this.staffGridView.AddHandler(HyperlinkButton.MouseLeftButtonUpEvent, new MouseButtonEventHandler(HyperlinkButtonClick), true);
                    this.staffGridView.Columns.Add(externalidCol);

 

 

 public void HyperlinkButtonClick(object sender, MouseButtonEventArgs e)
        {
            if (sender == null)
                return;
                var senderElement = e.OriginalSource as FrameworkElement;
                var row = senderElement.ParentOfType<GridViewRow>();
                XeRecord rec = row.Item as XeRecord;
                selectStaff(rec);
        }

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[Dimitrina]

Hello,

Have you subscribed for the handler 5 times? If so, then I would suggest you to subscribe for it just 1 time and then add the five column you define.

Let me know how this works for you.

Regards,
Dimitrina
Telerik

 

 

[Nalini]

I see, below line need to be outside of loop..

 this.staffGridView.AddHandler(HyperlinkButton.MouseLeftButtonUpEvent, new MouseButtonEventHandler(HyperlinkButtonClick), true);

 

Thanks,

Nalini

[Nalini]

Hello Dimitrina,

 Below line calls function HyperlinkButtonClick even on click of column header or while re-sizing the column width . I need to call it only when user will click on hyperlink of data template.

 

 this.staffGridView.AddHandler(HyperlinkButton.MouseLeftButtonUpEvent, new MouseButtonEventHandler(HyperlinkButtonClick), true);

[Dimitrina]

Hello Nalini,

You can handle the situation based on the type of e.OriginalSource.
For example:

this.AddHandler(HyperlinkButton.MouseLeftButtonDownEvent, new MouseButtonEventHandler(HyperlinkButtonClick), true);
...
private void HyperlinkButtonClick(object sender, MouseButtonEventArgs e)
{
    if (e.OriginalSource.GetType() == typeof(Border))
    {
        e.Handled = true;
    }
}

Regards,
Dimitrina
Telerik