How do I place restriction when entering some text in a textbox?

You can restrict a user from entering text against a set pattern. Or you can request the user only to enters certain type of

characters. E.g. Only a single digit number or a double digit number and so on. To control the input, use the KeyPress event like below:

Private Sub TextBox1_KeyPress(ByVal sender As Object,ByVal e As _ System.Windows.Forms.KeyPressEventArgs) Handles 
TextBox1.KeyPress
If(e.KeyChar < "10" Or e.KeyChar > "100") Then
MessageBox.Show("Enter Double Digits")
End If
End Sub

Written by Sandeep Mogulla, Webmaster at www.startvbdotnet.com

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