Public Class Customerdetails
Inherits System.Windows. Forms.Form

Private Sub Button1_Click(B yVal sender As System.Object, ByVal e As System.EventArg s) Handles Button1.Click
updatecustomerd atabase("Insert INTO Customer (FirstName), VALUES cstr(txtcustome rname.text)")

End Sub
Sub updatecustomerd atabase(ByVal sqlStr As String)
Dim newcustomer As New DataTable...