[RESOLVED] Keep a user from switching tabs before they click the datagridview

I have a form with tab controls (TabControl1). There is a datagridview1 above it and when a row is clicked, it populates textboxes in the TabPage1 child. I have a TextBoxID that contains the Primary Key. I would like to validate against that using the validating class to prevent a user from clicking or changing the focus of TabPage1 if TextBoxID.Text=""

I tried several renditions of something like this...

Code:

---

    Private Sub TabControl1_Validating(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles TabControl1.Validating
        If TextBoxID.Text = "" Then
            MsgBox("Field Data Needed For Other Tabs!")
            e.Cancel = True
        End If
    End Sub

---

How can I achieve this without having to continue checking other tab enter events for this field being empty?

Maybe look at from the opposite angle. Rather than prevent something if a condition is not true, allow it when a condition is true. The latter may be able to be done by setting the enable bit of the tab control... disable the tab control until the validation succeeds.
kevin

Change the Handle u have there to .click or keep it what works best

and write a

Code:

---

If PerFormedDataEncode = false Then
e.cancel
End If

---

Make a new boolean in ur class
Public PerformedDataEncode As boolean = false

After ur code that populates the fields
PerformedDataEncode = true

Or hide the tabcontrol and show it when the fields are filled

Way to think outside the box. That was perfect and looks better too. I set TabControl1.Enabled = False by default load, then on the DataGridView1_CellContentClick I enabled it to True. Just what I needed.