I add user account and i add Again with same username and password
how to make error message sample MsgBox("Account is already registered")
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Jump to PostGet you Accinfo table into a datatable (dt). You should have a TextBox to insert accname (TextBox1).
Private Sub TextBox1_Validated(ByVal sender As Object, ByVal e As System.EventArgs) Handles TextBox1.Validated For i As Integer = 0 To Dt.Rows.Count - 1 If TextBox1.Text = Dt.Rows(i).Item("Text").ToString Then MsgBox("Acc has …
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