Question

I’m trying to check username and password by using a For Each Statement. If it validates then messagebox saying welcome appears, if it doesn’t a message box saying “incorrect” will keep popping up over and over until it’s done looping through the table. How can i correct this and just make it display one time. Also when it does validate a new window will show up with users First and Last name in a textbox, How can I edit users info and then save to db. Thanks for any help.

       Private Sub Button1_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles Button1.Click

    Dim data As New datalinq1DataContext

    For Each row In data.Users
        If Not row.username = TextBox1.Text And Not row.password = TextBox2.Text Then
              Messagebox.Show("Incorrect")
        Else
            MessageBox.Show("Welcome " + row.fname + " " + row.lname)
            Dim window As New Window1
            window.TextBox1.Text = row.fname
            window.TextBox2.Text = row.lname
            window.TextBox3.Text = row.username

            window.Show()
            Exit For
        End If

    Next


End Sub

Answer 1

You could add an EXIT FOR after the msg box, but why are there multiple records being checked in the user table. You should filter the user table to just the username entered.