RadGrid tooltip refresh no working

[Laimis]

I have very simple RadGrid that is being loaded from database

 <telerik:RadGrid ID="RadGrid1" runat="server" Skin="MetroTouch"  OnPreRender="RadGrid1_PreRender" OnItemDataBound="RadGrid1_ItemDataBound" ></telerik:RadGrid>

 

This populates my tooltip:

 protected void RadGrid1_PreRender(object sender, EventArgs e)
        {

foreach (GridDataItem dataItem in radgrid2.MasterTableView.Items)
            {
                dataItem["Offset_Rank"].ToolTip = dataItem["OffsetToolTip"].Text;
            }
        }

 

My problem is, once I change my lookup parameters and reload the radGrid my tool tip becomes null,  what am I missing?

 

Any help would be helpful.

Thanks

[Eyup]

Hi Laimis,

Please verify that after this change the dataItem["OffsetToolTip"].Text value is properly accessed. Alternatively, you can try to achieve this requirement using ItemDataBound event handler:
http://docs.telerik.com/devtools/aspnet-ajax/controls/grid/rows/accessing-cells-and-rows#accessing-raw-field-data-and-key-values

I hope this will prove helpful.

Regards,
Eyup
Progress Telerik

[Laimis]

thanks for the reply,  one more question, my code works fine and the tooltip shows the value after the page load and also after the radgrid refresh, but it breaks if I hide the column OffsetToolTip (which populates the tooltip), but it only breaks after I refresh the data in ragrid, the initial load works.

[Marin Bratanov]

Hi Laimis,

When the column is Visible=false, its data is not available, and this is expected.

One way of working around that is to add the OffsetToolTip field to the DataKeyNames collection of the TableView and use item.GetDataKeyValue("OffsetToolTip") to access it.

Regards,

Marin Bratanov
Progress Telerik