[Solved] How to access and change the value of a label in a gridtemplatecolumn

[Denise Duggan]

I have a gridtemplate column, like so:

<telerik:GridTemplateColumn UniqueName="colClockInToShow" HeaderStyle-Width="45px">
    <HeaderTemplate>
        <asp:Label ID="lblClockInHeader">Clock In</asp:Label>
    </HeaderTemplate>
    <ItemTemplate>
        <asp:Label ID="lblClockInData" Text="temp" />
    </ItemTemplate>
</telerik:GridTemplateColumn>

During the course of my radGridTimeCard_ItemDataBound sub, I have logic that will select the proper value to be displayed in the label (which is now displaying "temp").  But I just can't seem to figure out how to access that label's text property programatically. 

Help??

[Princy]

Hello Denise,

You can try out the following code to access a label in the GridTemplateColumn:
c#:

 protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
    {
        if (e.Item is GridDataItem)
        {
            GridDataItem dataItem = (GridDataItem)e.Item;
            Label lbl = (Label)dataItem.FindControl("lblClockInData");
            lbl.Text = "My Custom Text";
        }
    }

Thanks
Princy.

[Denise Duggan]

Thanks for the help.  I tried that and it didn't work.  I converted it to VB as that's what I'm using and came up with the following (and if I mis-translated it please let me know).

If (TypeOf (e.Item) Is GridDataItem) Then
    Dim dataItem As GridDataItem = e.Item
    Dim lbl As New Label
    Try
        ' Clock In Data
        If Not (DirectCast(e.Item.DataItem, DataRowView)(8).ToString = "") Then
            lbl = dataItem.FindControl("lblClockInData")
            lbl.Text = "My Custom Text"
        End If
    Catch ex As Exception
        Throw New ApplicationException("Problem correctly formating date(s) and/or time(s) in grid", ex)
    End Try
End If

I stepped through to find that when I try to find the control and assign that to the lbl variable, it returns Nothing.  So then when I try to assign the text of that control (lbl.Text) the app throws an error saying that the "Object reference not set to an instance of an object."  I don't know why it doesn't find that control?  I think if I could get that solved I'd be on my way.