Data Validation in textboxes

[tqmd1]

Dear Experts

I Have four textboxes,

I want textbox1 to accept only char data.
I want textbox2 to accept only numeric data.
I want textbox3 to accept only alphanumeric data.
I want textbox4 to accept only bolean data.

Please help

 

[Hack]

Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
'numbers only
If e.KeyChar.IsNumber(e.KeyChar) = False Then
    e.Handled = True
End If
End Sub

Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
'Text only
If e.KeyChar.IsNumber(e.KeyChar) = True Then
    e.Handled = True
End If
End Sub

Alphanumeric only? What other options are there?

I have no idea what you mean by Boolean Data - do you means allow only the words True or False?