Update old data and add new data using tableadapter in vb.net - vb.net

Question

My code should update old records and at the same time if the a new record is found it should likewise insert it in the DB... I am using table adpater in doing this method.
Here is the code:
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Dim pta As New PHDSTableAdapters.productdatabaseTableAdapter
pta.Updateproduct(TextBox1.Text, ComboBox1.Text, TextBox2.Text, TextBox3.Text, TextBox4.Text, TextBox5.Text)
pta.Fill(myds.productdatabase)
Dim lta As New PHDSTableAdapters.lotnoTableAdapter
Dim lt = lta.GetDataBylotno(TextBox5.Text)
Dim l As phaccess.PHDS.lotnoRow = lt.Rows(0)
Dim i As Integer
For i = 0 To DGV.Rows.Count - 1
For Each l In myds.lotno
Dim lot As String = DGV.Rows(i).Cells(1).Value
Dim del As Date = DGV.Rows(i).Cells(2).Value
Dim exp As Date = DGV.Rows(i).Cells(3).Value
Dim quantity As Integer = DGV.Rows(i).Cells(4).Value
Dim sup = DGV.Rows(i).Cells(5).Value
Dim disc = DGV.Rows(i).Cells(6).Value
If l.productid = TextBox5.Text Then
Dim lotnumber As String = l.lotnumber
If l.lotnumber <> lot Then
'the error occurs in the insert statement as it would create duplicates 'of the index...the index of the table is the lot number
lta.Insert(TextBox5.Text, lot, del, exp, quantity, sup, disc)
Else
lta.Updateedit(del, exp, quantity, sup, disc, lot)
lta.Fill(myds.lotno)
End If
End If
If lot = "" Then
closeform()
lta.Fill(myds.lotno)
Button3.Enabled = False
Button1.Visible = True
Button3.Visible = False
Button1.Enabled = False
Exit Sub
End If
Next
Next
End Sub
If you need anything else to help me solve this please do ask.
thank you

Answer 1

you can use "DataTable" to upadate DataGridView in your table
For displaying data:
Dim sql As String = "SELECT * FROM table_name"
sCommand = New SqlCommand(sql, conn)
sAdapter = New SqlDataAdapter(sCommand)
sBuilder = New SqlCommandBuilder(sAdapter)
sDs = New DataSet()
sAdapter.Fill(sDs, "table_name")
sTable = sDs.Tables("table_name")
DataGridView1.DataSource = sTable
for updating:
sAdapter.Update(sTable)
i hope this helps