When I write this code in VB.NET I have error in ! = null whats the problem here any idea about that ?

Question

1.00/5 (1 vote)

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It's Says Identifier Expected

Private Sub ComboBox2_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TextBox8.KeyDown, TextBox6.KeyDown, TextBox5.KeyDown, TextBox3.KeyDown, TextBox2.KeyDown, DateTimePicker2.KeyDown, DateTimePicker1.KeyDown, ComboBox2.KeyDown
        If (e.KeyCode = Keys.Enter) Then

        End If
            if (Me .GetNextControl(ActiveControl, true)  != null)

            e.Handled = True
            Me.GetNextControl(ActiveControl, True).Focus()
        End If

What I have tried:

How to make Enter on a TextBox act as TAB button

Posted 12-Feb-18 1:25am

Shaddow>dark

Updated 12-Feb-18 1:28am

v2

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CPallini · Accepted Answer · 2018-02-12T01:28:00

Solution 1

VB.NET has not != operator, it has instead the <> one. See, for instance VB.Net - Comparison Operators[^].
Also it doesn't have null, use Nothing instead.

The way to check for a null reference is (see vb.net - Null check in VB - Stack Overflow[^])

VB

If object isNot Nothing then
  '...
End If

Posted 12-Feb-18 1:28am

CPallini

Updated 12-Feb-18 1:56am

v4

Comments

Shaddow>dark 12-Feb-18 7:35am

Error 1 Operator '<>' is not defined for types 'System.Windows.Forms.Control' and 'System.Windows.Forms.Control'.

My new Error after update ???

Shaddow>dark 12-Feb-18 7:35am

Private Sub ComboBox2_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TextBox8.KeyDown, TextBox6.KeyDown, TextBox5.KeyDown, TextBox3.KeyDown, TextBox2.KeyDown, DateTimePicker2.KeyDown, DateTimePicker1.KeyDown, ComboBox2.KeyDown
If (e.KeyCode = Keys.Enter) Then

End If
If (Me.GetNextControl(ActiveControl, True) <> Nothing) Then

e.Handled = True
Me.GetNextControl(ActiveControl, True).Focus()
End If

Shaddow>dark 12-Feb-18 7:54am

???????????????????????????????????

Dave Kreskowiak 12-Feb-18 12:04pm

Really? How many times are you going to ignore what you've been told.

    If Me.GetNextControl(ActiveControl, True) IsNot Nothing Then

Maciej Los 12-Feb-18 16:35pm

5ed!

CPallini 13-Feb-18 11:36am

Thank you, Maciej!