Disable a text box when it's not adding new row?

[Nick nkw]

I want to enable a text box only when it's in "add new" status. The
BindingSource.Position just return a number. Any good way to do it?

Thanks,

 

[ClayB]

Maybe you could enable the TextBox in the BindingSource.AddingNew
event.

==============
Clay Burch
Syncfusion, Inc.

 

[RobinS]

How do you *know* it's in AddNew status? When they add a row to the list or
datatable? Or is that what you're asking?

Robin S.

 

[msdn]

I know one way to tell, check if th position of bindingSource is larger than
the counts of the table. But it seems not work well on multiple users
environment.

 

[Bart Mermuys]

Hi,

I want to enable a text box only when it's in "add new" status. The
BindingSource.Position just return a number. Any good way to do it?

If you are using DataSet/DataTable/DataView as a DataSource for the
BindingSource, then something like this might work:

private bindingSource_CurrentChanged(...)
{
DataRowView drv = (DataRowView)bindingSource.Current;
textBox.Enabled = drv.IsNew;
}

HTH,
Greetings

 

[Earl]

It really helps to use a New button also, something like the following. But
a better solution is to set up a comprehensive method that includes all
buttons and controls that are enabled/disabled as one.

Private Sub btnNew_Click(ByVal sender As Object, ByVal e As
System.EventArgs) Handles btnNew.Click
BindingSource.AddNew()
txtQuantity.Enabled = true
btnNew.Enabled = false
btnSave.Enabled = true
End Sub

Private Sub btnSave_Click(ByVal sender As Object, ByVal e As
System.EventArgs) Handles btnSave.Click
SaveRoutine()
txtQuantity.Enabled = false
btnSave.Enabled = false
End Sub

 

[Nick nkw]

The problem is when to disable the TextBox after adding? It sounds not
proper events of BindingSource suitable.