[Solved] Object reference not set

[Warren]

I've added tooltips to my grid using this code

  Protected Sub RadGrid1_ItemCreated(ByVal sender As Object, ByVal e As Telerik.Web.UI.GridItemEventArgs) Handles RadGrid1.ItemCreated
    If (TypeOf e.Item Is GridDataItem) Then
      Dim gridItem As GridDataItem = CType(e.Item, GridDataItem)
      Dim ent As OrderTrackingViewEntity = CType(e.Item.DataItem, OrderTrackingViewEntity)

      If Not String.IsNullOrEmpty(ent.WarehouseComments) Then
        For Each column As GridColumn In RadGrid1.MasterTableView.RenderColumns
          '    If (TypeOf column Is GridBoundColumn) Then
          '      gridItem(column.UniqueName).ToolTip = ent.WarehouseComments '(gridItem.OwnerTableView.DataKeyValues(gridItem.ItemIndex)("WarehouseComments").ToString)
          '    End If
        Next
      End If
    End If
  End Sub

If I uncomment the 3 lines in the for each loop I get this error

Object reference not set to an instance of an object

when I click on any rows edit button, it works fine if I live the lines commented out.

[Shinu]

Hi Warren , 

Go through the following help article.
Adding tooltips for grid items

Shinu.

[Warren]

That's the article I based my code on; I'm not sure what I'm missing that will fix my problem?

[Shinu]

Hi Warren,

Can you try adding the ToolTip in the ItemDataBound event ?

CS:

 protected void RadGrid1_ItemDataBound(object sender, Telerik.Web.UI.GridItemEventArgs e)
    {
        if (e.Item is GridDataItem)
        {
            GridDataItem item = (GridDataItem)e.Item;
            string strTxt = item["columnUniqueName"].Text.ToString();
            if (strTxt == "Edit")
            {
                item["columnUniqueName"].ToolTip = "Click Here to Edit";
            }
        }
   }

Thanks
Shinu.

[Warren]

That fixed it.

Thanks!