Private Sub AddIngoing_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
loadprodin()
End Sub
Private Sub loadprodin()
Dim i As Integer
objCon = New SqlConnection(conStr)
Try
objCon.Open()
obj = objCon.CreateCommand()
str = "Select * from product ORDER BY p_code"
obj.CommandText = str
sda.SelectCommand = obj
sda.Fill(ds, "product")
dt = ds.Tables("product")
obj.ExecuteNonQuery()
For i = 0 To dt.Rows.Count - 1
ComboBox2.Items.Add(dt.Rows(i).Item(1))
Next
Catch ex As Exception
MsgBox("Error: " & ex.Source & ": " & ex.Message, MsgBoxStyle.OkOnly, "Error conection!!")
End Try
End Sub
my problem is when i close this form and reopenit the data in the combobox load again. i mean for example in first load in the form only 1 data in combobox after i reload the form the data was duplicate in the combobox. how to prevent it? i don't want to duplicate that data.