Data Presentation Controls

Re: Details View ItemUpdating e.cancel

Skip_Frog — Thu, 18 Jan 2007 15:29:34 GMT

Thanks for your help. I have taken your advice and placed a label outside of the control and all is fine.

Re: Details View ItemUpdating e.cancel

Dave Sussman — Wed, 17 Jan 2007 18:27:47 GMT

OK, straight from the ASP.NET development team comes this reply:

Setting certain properties forces the DetailsView (or the GridView or the FormView) to re-databind to reflect the new values. HeaderText on the fields is one of those properties. If the control didn’t rebind, setting the HeaderText to anything (even “Wibble”) wouldn’t do anything until you call DataBind explicitly. Since our goal with the new data controls was to not require the user to call DataBind explicitly in all mainline scenarios, we need to call DataBind if properties that affect the rendering or control tree are changed.

This makes sense and fits with the control.

So the best approach would be to have your messages outside of the control, or as templated columns.

Dave

Re: Details View ItemUpdating e.cancel

Dave Sussman — Wed, 17 Jan 2007 09:19:35 GMT

You're right, what a strange situation. I would report this as a bug at the MSDN Feedback centre (https://connect.microsoft.com/feedback/). Anything reported here gets through to the development team. If this is a blocking issue you can report it to Product Support and investigation will be escalated and maybe a patch would be created.

In the mean time, as a workaround, you can manually repopulate the fields from the NewValues collection; it's not a great solution, but would allow you to keep working.

Alternatively, don't set the title text, but maybe have a label outside of the DetailsView that you update with error/warning messages. Or you could tempalte all of your fields and add a field alongside, to the right.

Dave

Re: Details View ItemUpdating e.cancel

Skip_Frog — Tue, 16 Jan 2007 15:44:40 GMT

It looks like setting the header text is the culprit. Any thoughts.

Thanks

Re: Details View ItemUpdating e.cancel

Dave Sussman — Tue, 16 Jan 2007 15:44:07 GMT

That's very odd, I've no idea why it should cause a problem. Is it both lines of code that cause the issue, or just setting the HeaderText?

Re: Details View ItemUpdating e.cancel

Skip_Frog — Tue, 16 Jan 2007 15:36:13 GMT

Yeah I started removing code and found the commented out lines below cause this behavior. Running it this way (commented out) everything is good.. Any thoughts on why this would be happenning?

Check_CA < 4 Then

CA = e.NewValues(

"Corrective_Action")

If Len(CA) < 20 Then

'Me.DetailsView1.Fields(12).HeaderText = "C/A is required"

'Me.DetailsView1.Fields(12).HeaderStyle.ForeColor = Drawing.Color.Red

e.Cancel =

True

'Exit Sub

End If

Else

'Me.DetailsView1.Fields(12).HeaderText = "Corrective Action"

'Me.DetailsView1.Fields(12).HeaderStyle.ForeColor = Drawing.Color.Black

End If

Thanks

Re: Details View ItemUpdating e.cancel

Dave Sussman — Tue, 16 Jan 2007 14:24:37 GMT

Do you have any other binding code that would be refreshing these values? When I created a test page with just a SqlDataSource and FormView control (no code) it worked for me.

Dave

Re: Details View ItemUpdating e.cancel

Skip_Frog — Tue, 16 Jan 2007 14:20:34 GMT

No when I cancel the updating event, the Details view is indeed left in edit but the original values are returned.

Thanks

Re: Details View ItemUpdating e.cancel

Dave Sussman — Sat, 13 Jan 2007 10:53:24 GMT

When you cancel the Updating event, the DetailsView is left in edit mode and the values you entered are not changed. Is this not the behaviour you are seeing?

If you want to manipulate the values in the DetailsView you can iterate through the Rows collection (one row for each field displayed), and then the Cells collection (two cells: the header, the value).

Dave

Details View ItemUpdating e.cancel

Skip_Frog — Fri, 12 Jan 2007 22:23:56 GMT

Hi All,

When I use the e.cancel=true in the item updating event it cancels the update which I want. But it also returns the original values which I do not want. So how do I keep the new values?

Thanks