Programmatically finding differences between analogous controls in separate formviews

DatabaseGoddess · October 2nd, 2014, 07:04 PM

Is there a way to highlight the difference between two corresponding labels/textboxes within two formviews? I have two formviews on a webpage, the second of which displays after a user edits the first formview and clicks the update button. The second formview shows the updates the user just made while the first formview shows the database row as it was before the user edited it.

So if both formviews have a textbox or label that display phonenumber and the user changed the phonenumber, I'd like the phonenumber in the second formview to be highlighted. I'd need to compare each pair of textboxes or labels in the two formviews. Also, if one of the formviews has an empty textbox or label and the corresponding label/textbox in the other formview has content, I'd want to highlight that as well. I mention that because I usually do something like (an unrelated example):

Code:

    If FormView1.CurrentMode = FormViewMode.Edit Then

      Dim UpdDate As TextBox = TryCast(FormView1.FindControl("UpdDateTextBox"), TextBox)
      If UpdDate IsNot Nothing Then
        UpdDate.Text = DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss tt")

so I'm not sure how compare when one or both of the controls is empty.

Thanks for reading and if you can suggest some logic to use I will be very appreciative.

Imar · October 6th, 2014, 03:13 PM

Hi there,

Not entirely sure what you mean or what you're trying to accomplish, but it sounds like you're better off using something like LINQ to get the data in the Code Behind and then compare it against the data the user entered.

BTW: since this is not related to my book directly, please post questions like this in the General ASP.NET Category: http://p2p.wrox.com/asp-net-4-5-1-752/

Cheers,

Imar

DatabaseGoddess · October 6th, 2014, 09:18 PM

The General ASP.NET forum seems dead. Lots of questions and no answers. I figured out how to highlight the edited control in the code behind looping through and using Drawing.Color.