Displaying Data

Imar · March 27th, 2009, 01:57 PM

Untested, but you should be able to do something like this:

1. Convert the relevant controls to TemplateFields using the DetailsView's Smart Task panel.

2. Handle the ModeChanged event with code like this:

Code:

 
Protected Sub DetailsView1_ModeChanged(ByVal sender As Object, _
       ByVal e As System.EventArgs) Handles DetailsView1.ModeChanged
  If DetailsView1.CurrentMode = DetailsViewMode.Edit Then
    Dim txtName As TextBox = CType(DetailsView1.FindControl("Name"), TextBox)
    txtName.Text = Context.User.Identity.Name
  End If
End Sub

This way, when the control is in Insert mode you use FindControl to find the nexted TextBox controls and then set their values.

Cheers,
Imar

areed24 · March 30th, 2009, 09:39 AM

Thank you. The logic makes sense, but I get the following error:

Quote:

Object reference not set to an instance of an object.

Will · March 30th, 2009, 09:48 AM

I *think* it is because you have declared an object and then referenced it with a different name in your code so it is being picked up but it can't be identified as anything.

Try:

Code:

Protected Sub DetailsView1_ModeChanged(ByVal sender As Object, _
   ByVal e As System.EventArgs) Handles DetailsView1.ModeChanged
        If DetailsView1.CurrentMode = DetailsViewMode.Edit Then
            Dim txtName As TextBox = CType(DetailsView1.FindControl("txtName"), TextBox)
            txtName.Text = Context.User.Identity.Name
        End If
    End Sub

Im pretty new to this so that might be wrong but I had a go

Imar · March 30th, 2009, 01:28 PM

The txtName of this line:

Dim txtName As TextBox
is not necessarily related to this one:

CType(DetailsView1.FindControl("txtName"), TextBox)

It's what you have defined in the template field that matters. What's the name of the text box there?

Imar