Why is my FormView getting data bound twice?

[mych]

Has anyone come across this before?...

I have a FormView with an EditTemplate and ItemTemplate.

The FormView is bound to a DataSource. The code behind does NO DataBind()

The FormView has an OnDataBound event.

For some reason this is triggered Twice!

The code for this event is...

Public Sub SetScheduleBindings(ByVal Sender As Object, ByVal e As eventArgs) Handles fv_TaskDetails.DataBound

        If fv_TaskDetails.CurrentMode = FormViewMode.ReadOnly Then
            Dim hd_PerfMon As HiddenField = fv_TaskDetails.FindControl("hd_PerfMon")
            Dim hd_PerfTue As HiddenField = fv_TaskDetails.FindControl("hd_PerfTue")
            Dim hd_PerfWed As HiddenField = fv_TaskDetails.FindControl("hd_PerfWed")
            Dim hd_PerfThu As HiddenField = fv_TaskDetails.FindControl("hd_PerfThu")
            Dim hd_PerfFri As HiddenField = fv_TaskDetails.FindControl("hd_PerfFri")
            Dim hd_PerfSat As HiddenField = fv_TaskDetails.FindControl("hd_PerfSat")
            Dim hd_PerfSun As HiddenField = fv_TaskDetails.FindControl("hd_PerfSun")
            Dim lb_PerformedOn As Label = fv_TaskDetails.FindControl("lb_PerformedOn")

            Dim hd_NTR As HiddenField = fv_TaskDetails.FindControl("hd_NTR")
            Dim lb_NTR As Label = fv_TaskDetails.FindControl("lb_NTR")

            If hd_PerfMon.Value = "True" Then
                lb_PerformedOn.Text = lb_PerformedOn.Text & "Mondays, "
            End If
            If hd_PerfTue.Value = "True" Then
                lb_PerformedOn.Text = lb_PerformedOn.Text & "Tuesdays, "
            End If

            If hd_PerfWed.Value = "True" Then
                lb_PerformedOn.Text = lb_PerformedOn.Text & "Wednesdays, "
            End If

            If hd_PerfThu.Value = "True" Then
                lb_PerformedOn.Text = lb_PerformedOn.Text & "Thursdays, "
            End If

            If hd_PerfFri.Value = "True" Then
                lb_PerformedOn.Text = lb_PerformedOn.Text & "Fridays, "
            End If

            If hd_PerfSat.Value = "True" Then
                lb_PerformedOn.Text = lb_PerformedOn.Text & "Saturdays, "
            End If

            If hd_PerfSun.Value = "True" Then
                lb_PerformedOn.Text = lb_PerformedOn.Text & "Sundays, "
            End If

            lb_PerformedOn.Text = Left(lb_PerformedOn.Text, Len(lb_PerformedOn.Text) - 2)

            If IsNothing(hd_NTR) = False Then
                lb_NTR.Text = String.Format("{0:dd/MMM/yy hh:mm tt}", hd_NTR.Value.ToString)
            End If

        End If

        If fv_TaskDetails.CurrentMode = FormViewMode.Edit Then

            'Removed.....

        End If

    End Sub

Now because the routine is triggered twice my label lb_PerformedOn is set to double what it should be....

e.g. Tuesdays, Wednesdays, FridaysTuesdays, Wednesdays, Fridays

I can get around the issue by inserting a lb_PerformedOn.Text = "" before I start checking the values of the HiddenFields. But this does not explain why the event is being triggered twice.

Any explanations gratefully appreciated.

Mych

I've not failed! Just found 100 ways that don't work...yet!

 

[jbenson001]

That is the problem with datasource controls, you can't debug them. I suggest you remove it and write the dataaccess and binding code yourself.