Enter and Tab sends focus to next textbox - vb.net

Question

I had made a class by inheriting the system textbox shown in following code.
Public Class textboxex
Inherits TextBox
Private Sub TextBoxEx_Return(sender As Object, e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
If e.KeyCode = Keys.Enter Then
SendKeys.Send("{TAB}")
Me.Text = Me.Text.ToUpper 'To change the text to upper case when it leaves focus.(working fine)
End If
End Sub
Now problem is when I press Tab key, it doesn't enter the if condition.
Probably it would not because I havn't given if condition for tab key.
But I after I changed the if condition by adding e.keycode = keys.Tab and pressing tab key, it won't do the Uppercase of the letters but enter does it fine. The updated code shown below.
If e.KeyCode = Keys.Enter or e.KeyCode = Keys.Tab Then
SendKeys.Send("{TAB}")
Me.Text = Me.Text.ToUpper 'doesn't work when tab is pressed | enter works fine
End If
So this is my problem, help me plox...!!!!!!!

Answer 1

To make Enter work like Tab
You can override ProcessCmdKey method and check if the key is Enter then, send a Tab key or ussing SelectNextControl, move focus to next control:
Public Class MyTextBox
Inherits TextBox
Protected Overrides Function ProcessCmdKey(ByRef msg As Message, keyData As Keys) _
As Boolean
If (keyData = Keys.Enter) Then
SendKeys.Send("{TAB}")
'Parent.SelectNextControl(Me, True, True, True, True)
Return True
End If
Return MyBase.ProcessCmdKey(msg, keyData)
End Function
End Class