Enter和Tab将焦点发送到下一个文本框

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