Problem for adding context menu on header

[Thomas LEBRUN]

Hi,

I'm trying to add a context menu to the heder of my gridview. I've follow the code found here: http://demos.telerik.com/silverlight/#GridView/HeaderContextMenu

So I've used (I need to use only C# code,no XAML code):

DataGrid =

new SLGrid2();

 

 

GridViewHeaderMenu.SetIsEnabled(DataGrid.CurrentGrid as RadGridView, true);

 

DataGrid.CurrentGrid point to my RadGridView. The problem is that once te code is here:

IEnumerable

 

<GridViewHeaderCell> cells = row.Cells.OfType<GridViewHeaderCell>();

 

 

foreach (GridViewHeaderCell cell in cells)
{

row.Cells is always 0 so the foreach is never executed. My data are loaded after the creation of the grid so maybe it's because there is no data on the grid ? The problem is, if I tried to use the following line once the data are loaded:

GridViewHeaderMenu.SetIsEnabled(DataGrid.CurrentGrid as RadGridView, true);

The code use the Loaded event of the GridView, event that already occurs....

Do you have an idea ?

I hope it's clear :)


Thanks !

[Pavel Pavlov]

Hi Thomas LEBRUN,

Here is some sample C# code that adds a context menu to the fisrt header cell of the RadGridView

public MainPage()
        {
            InitializeComponent();
            this.RadGridView1.ItemsSource = Person.GetSampleListOfPersons();

            this.RadGridView1.RowLoaded += new EventHandler<RowLoadedEventArgs>(RadGridView1_RowLoaded);
        }

        void RadGridView1_RowLoaded(object sender, RowLoadedEventArgs e)
        {
            GridViewHeaderRow headerRow = e.Row as GridViewHeaderRow;

            if (headerRow != null)
            {
                GridViewHeaderCell firstHedaerCell = headerRow.Cells[0] as GridViewHeaderCell;
                RadContextMenu contextMenu = new RadContextMenu();
                contextMenu.Items.Add("test context menu item");
                RadContextMenu.SetContextMenu(firstHedaerCell, contextMenu);
            }
        }

Let me know if you have troubles  adadpting this to your project.

Best wishes,
Pavel Pavlov
the Telerik team

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[Thomas LEBRUN]

Hi Pavel,

That's work fine, thanks !

By the way, if you could take a look at my other questions/problems, it could be fine:


http://www.telerik.com/community/forums/silverlight/gridview/update-aggregate-functions-in-custom-footer-on-filter.aspx

http://www.telerik.com/community/forums/silverlight/gridview/footer-aggregate-function-and-frozen-columns-bug.aspx

:)


Thanks !

[William Schultz]

I have copied the same code you have above and set the grid view as :

        <TelerikControls:RadGridView
            Name="GV1"
            AutoGenerateColumns="True">
        </TelerikControls:RadGridView>

with your code behind:

    public partial class MainPage : UserControl {
        public MainPage() {
            InitializeComponent();
            this.GV1.ItemsSource = InboxIssue.GetInboxIssues();

            this.GV1.RowLoaded += new EventHandler<RowLoadedEventArgs>(GV1_RowLoaded);
        }

        protected void GV1_RowLoaded (Object sender, RowLoadedEventArgs e)
        {
            var headerRow = e.Row as GridViewHeaderRow;

            if (headerRow != null) {
                var firstHedaerCell = headerRow.Cells[0] as GridViewHeaderCell;
                RadContextMenu contextMenu = new RadContextMenu();
                contextMenu.Items.Add("test context menu item");
                RadContextMenu.SetContextMenu(firstHedaerCell, contextMenu);
            }
        }
    }

and I get no context menu at all. In the RowLoaded even handler the header row has 1 cell but my data has 14 cols and once run it has a nice gridview with 1 data row and 14 columns with my data.

What am I doing wrong?

[Vlad]

Hello,

It will be better if you set the context menu for the entire grid and use the approach demonstrated on this example:
http://demos.telerik.com/silverlight/#GridView/HeaderContextMenu

Best wishes,
Vlad
the Telerik team

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