User Control in a GridView

Colonel Angus · August 13th, 2007, 09:32 AM

I have a GridView where one of the columns shows a bound date value. When in edit mode, I want to work with a UserControl I created ("SmallCalendar"). The User Control is a simple date selector/display of 3 dropdowns. One each for Month, Day and Year.

When I try to access SmallCalendar, I get the error, "Object reference not set to an instance of an object".

The code I use is:

Code:

Public Sub GridView1_Edit(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewEditEventArgs)
        Dim i As Integer
        i = e.NewEditIndex
        Dim row As GridViewRow
        row = GridView1.Rows(i)
        Dim cal As New SmallCalendar

        cal = CType(row.Cells(6).FindControl("Calendar1"), SmallCalendar)
        TextBox1.Text = cal.SelectedDate_AsString
    End Sub

I placed SmallCalendar on the design surface for the Edit Template.

Thanks in advance for your comments.

gbianchi · August 13th, 2007, 09:58 AM

hi there.. are you sure that findcontrol is finding it??? maybe you are looking in the wrong cell...

HTH

Gonzalo

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Colonel Angus · August 13th, 2007, 10:03 AM

I am sure that FindControl is not finding it, but I have tried the other cells (cells 0 through 7) to test it. My issue is that I know the control is supposed to be there. Is there some naming convention to use with FindControl that I am not aware of?

gbianchi · August 13th, 2007, 10:21 AM

no convention.. just the name of the control.. did you try it in the row???

maybe the row is no more in edit mode and that's why you just can't find it??

HTH

Gonzalo

================================================== =========
Read this if you want to know how to get a correct reply for your question:
http://www.catb.org/~esr/faqs/smart-questions.html
^^Took that from dparsons signature and he Took that from planoie's profile
================================================== =========
My programs achieved a new certification (can you say the same?):
WORKS ON MY MACHINE
http://www.codinghorror.com/blog/archives/000818.html
================================================== =========
I know that CVS was evil, and now i got the proof:
http://worsethanfailure.com/Articles...-Hate-You.aspx
================================================== =========

Colonel Angus · August 13th, 2007, 10:28 AM

Using FindControl on the row didn't work, but I think you're on to something with the Edit Mode.

It shows that it is is in normal mode for some reason.