I'm trying to add data/item to a listbox with custom ClientItemTemplate where I'm not using Text or Value but using other variables.

At first, I was using the listbox without a data source and I was able to add to the data by setting the attributes of a new listboxitem from the client-side.

Then I wanted to use a dummy REST service to test populating results.

I was able to populate the listbox using the clientdatasource using "select" only.

Now I want to be able to use both functionality, to populate the listbox from the REST service and manually. I tried to add directly to the listbox but it failed because their is no attributes and when I added items to clientdatasource using add() method but the new item did not appear in listbox.

Which method of adding an item is correct bearing in mind that I want to update the results to the REST service eventually and how can it be done.

I was trying to use a listbox with clientdatasource. But since the listbox cannot be rebinded yet, I decided to switch either grid or listview.

I was having some trouble selecting an item from listview so I'm using a grid with clientitemtemplate to fit by data into a single column.

What I want is to apply the ripple effect available when selecting an item in listbox to the grid,

so when I select a cell from the column it will have the ripple effect. 

if you can please provide me with a solution.

Hi,

I have a RadGrid with EditFormType="WebUserControl". In my usercontrol I have a custom validator to check the value and allow to update or not.

My problem is that  _dataItem is null on the CustomValidator_ServerValidate event.
I try this code :

But even with ViewState DataItem is always null (in CustomValidator_ServerValidate event).

Have you a solution ?

I'm having an issue with date formats on the grid. I've read through lot's of related threads, but they don't seem to be correcting my situation. The date is display as: 11/03/2016T00:00:00

The page has the column defined as:

The DataFormatString is defined as ="{0:dd MMM yyyy}" so my dates not coming out even close.

Any help would be appreciated.

Hi,

It looks like I encountered a previous mentioned bug "Incorrect AutoSize dimensions under Edge with tables in the content" (https://feedback.telerik.com/Project/108/Feedback/Details/173027-incorrect-autosize-dimensions-under-edge-with-tables-in-the-content).

I have a RadWindow with AutoSize is true that opens correctly in Google Chrome, but not in Microsoft Edge.

I read the release history but I didn't find the fix for the bug explicitly mentioned there:

http://www.telerik.com/support/whats-new/aspnet-ajax/release-history

Regards,

Chris.

Hi,

I have a GridTemplateColumn with itemtemplate, in this itemtemplate i have a linkbutton and ImageControl, when i click the link i want show the image. 

this is the aspx:

<telerik:GridTemplateColumn UniqueName="BtnPOD" HeaderStyle-Width="5%" ItemStyle-Width="10%" HeaderText="POD" AllowFiltering="false" >

                                            <ItemTemplate>
                                                <asp:LinkButton ID="btnPOD" CommandName ="detailPOD" Text='<%#Eval("POD")%>' runat="server"/>
                                                <asp:Image ID="ImgPOD" runat="server" ImageUrl='<%#Eval("POD")%>' />                                                                                                               </ItemTemplate>                                                                                  
</telerik:GridTemplateColumn>

in vb, in the ItemCommand event:

If Not Image Is Nothing AndAlso Image.Length <> 0 Then
            Dim arrpictures As Byte() = System.Convert.FromBase64String(Image)
            Dim myStream As New System.IO.MemoryStream(arrpictures)
            Dim base64String As String = Convert.ToBase64String(arrpictures, 0, arrpictures.Length)
            For i = 0 To CType(Session("GridViewData"), DataTable).Rows.Count - 1
                If i = e.Item.ItemIndexThen
                    CType(Session("GridViewData"), DataTable).Rows(i)("POD") = "data:image/jpeg;base64," & base64String
                End If
            Next
End If

i modify the DataTable and in needdatasource event:

RadGrid1.DataSource = CType(Session("GridViewData"), DataTable)

in needdatasource i check the changes in DataTable, but i can see the changes in radgrid