asp:UpdatePanel not work with ImageGallery

[Zbysek]

Telerik version 2014.3.1209.45

<telerik:RadImageGallery ID="PhotoGallery" runat="server" DataImageField="File" DataDescriptionField="Title" Width="500" >
</telerik:RadImageGallery>

// where File is byte[] and Title is string
....
<asp:UpdatePanel runat="server">
   <ContentTemplate>
     <asp:Label ID="Label1" runat="server" Text="Label" />
     <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
   </ContentTemplate>
</asp:UpdatePanel>
....
protected void Button1_Click(object sender, EventArgs e)
{
   Label1.Text = "OK"; // not work!!!
}

[Zbysek]

Hmmm...

fail:
if (!IsPostBack)
{
  PhotoGallery.DataSource = ...
  PhotoGallery.DataBind();
}

right:
<telerik:RadImageGallery ... OnNeedDataSource="PhotoGallery_NeedDataSource" >

[Eyup]

Hello Zbysek,

Please make sure that you are using either the declarative binding properties of the control or NeedDataSource event handler. You should avoid calling DataBind() and execute any database related logic inside the aforementioned handler.

Hope this helps.

Regards,
Eyup
Telerik