Changing HeaderText in runtime..

[Milan Gurung]

Hi,

How can I change the headerText for a grid in Runtime?

Thanks.
Milan G

[Daniel]

Hello Milan,

Test the following code-snippet:

    Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        RadGrid1.MasterTableView.GetColumn("ID").HeaderText = "NEW TEXT"
        RadGrid1.Rebind()
    End Sub

Regards,
Daniel
the Telerik team

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[Princy]

Hi,

You can also change the heder text in the ItemDataBound event as shown below.
cs:

 protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
    {
        if (e.Item is GridHeaderItem)
        {
            GridHeaderItem headerItem = (GridHeaderItem)e.Item;
            headerItem["Template"].Text = "CustomText";
        }
    }

Princy.

[John Billiris (JSBBS)]

Is there any reason why changing the HeaderText can't be done during the page's / user-control's OnPreRender event handler?

[Princy]

Hello John,

The Radgrid is rendered only after the page's PreRender event. So the grid or its elements wont be available in the page's/ usercontrol's PreRender event. Hope this answers your question.

Thanks
Princy.

[John Billiris (JSBBS)]

Thanks Princy.

As a note, the grid is available in the OnPreRender event handler, but changing the HeaderText of any column doesn't have any effect on the actual text displayed on screen.

So, I'm not sure whether Telerik want to pursue this... I'll leave that up to them.

And in my case, I check the HeaderText in the method that handles the data-binding. It works and I'm happy.

[Milan Gurung]

Hi,

I got a better solution by changing the column name itself in the dataset before binding it to grid. This is more flexible. I hope this might help.

Thanks,
Milan G

[tparus]

I am doing this in the ItemCreated event. The weird thing is that it doesn't render the first time. However, when I drag a column up to the Group box, the grid refreshes and the new/correct column names do appear. I hope this helps.

 

Protected Sub gridSales_ItemCreated(ByVal sender As Object, ByVal e As Telerik.Web.UI.GridItemEventArgs) Handles gridSales.ItemCreated

 

 

    If (TypeOf e.Item Is GridHeaderItem) Then

 

 

        Dim headerItem As GridHeaderItem = CType(e.Item, GridHeaderItem)

 

 

        Dim i As Integer = 1

 

 

        Dim colDate As Date

 

 

        For Each column As GridColumn In gridSales.MasterTableView.RenderColumns

 

 

            If (TypeOf column Is GridBoundColumn) Then

 

 

                ' The UniqueName of my columns are SalesMonth01...SalesMonth12
                If column.UniqueName.Contains("SalesMonth") = True Then

 

                    colDate = DateAdd(DateInterval.Month, -i, Now)

                    column.HeaderText =

String.Format("{0:MMM-yy}", colDate)

 

                    i += 1

 

                End If

 

 

            End If

 

 

        Next

 

        headerItem.Dispose()

 

End If

 

 

End Sub