Databinding is late!

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

Bruno Rodrigues - 23 Dec 2005 12:53 GMT

The controls in my form are bounded to a datasource, including textboxes,
comboboxes, etc...
Something lame happens: In runtime, the last focused control before clicking
on my save button, doesn't have its datasource bounded value refreshed with
the new data inputed. I think the control's LostFocus event it's not properly
fired when I click a ToolStrip button, and the databinding is not updated.

I came with the following piece of code on the Save function to solve this
problem:

if (this.ActiveControl != null && (this.ActiveControl is TextBox ||
this.ActiveControl is ComboBox || this.ActiveControl is MaskedTextBox))
this.ActiveControl.DataBindings[0].WriteValue();

It works fine. I just wonder if there's a better and cleaner way to solve my
problem; a property or something.

Thanks and happy chrtistmas.

Reply to this Message

MuZZy - 23 Dec 2005 15:53 GMT

> The controls in my form are bounded to a datasource, including textboxes,
> comboboxes, etc...
[quoted text clipped - 14 lines]
>
> Thanks and happy chrtistmas.

We had the same problem with our application... Our solution was to call
Form.SelectNextControl as it applies a value when leaves the control

I know, not a clean one but i didn't find anything better. Unfortunately
.NET's binding mechanism sucks badly :(

MuZZy

Reply to this Message

MuZZy - 23 Dec 2005 15:57 GMT

> The controls in my form are bounded to a datasource, including textboxes,
> comboboxes, etc...
[quoted text clipped - 14 lines]
>
> Thanks and happy chrtistmas.

By the way, in my app i came across another stupid issue with bindings -
if you have a bound text box and it's active control on the form, and
you activate another form, then go back to the first form and type
something in that active text box, it looses binding, i.e. whaterver you
type in it will no longer go to the dataset.

The workaround i found was to reactivate the text control when form
becomes active again:

void form_Activate(...)
{
form.ActiveControl = null;
form.ActiveControl = textBox1;
}

Reply to this Message

Databinding is late!

Free Magazines