getting value from datatable - asp.net

Question

Can anyone please tell me how to get value from datatable? I've only got one row and one column in the datatable and I need to get the value of the column to do calculations.
here's my script
<SCRIPT Language="VB" Runat="server">
Sub Page_Load(Source as object, e as EventArgs) handles me.load
Dim connectionstring As String = "DRIVER={MySQL ODBC 5.2 Unicode Driver}; SERVER=localhost; DATABASE=mydb; UID=andrew; PASSWORD=kh12345; OPTION=3"
Dim connectme As OdbcConnection = New OdbcConnection(connectionstring)
Dim sqlquery As String = "SELECT f_name, f_price from tbl_picture WHERE f_ID = 1"
Dim ODBCdataadapter As OdbcDataAdapter = New OdbcDataAdapter(sqlquery, connectme)
Dim ODBCdataset As DataSet = New DataSet()
ODBCdataadapter.Fill(ODBCdataset)
DataTable.DataSource = ODBCdataset
DataTable1.DataSource = ODBCdataset
Datatable.DataBind()
Datatable1.DataBind()
End Sub
</SCRIPT >
<ASP:Datagrid ID="Datatable1" Runat="server" AutoGenerateColumns="False"BorderStyle="None" GridLines="None">
<Columns>
<asp:BoundColumn
DataField="f_price"
ReadOnly="True"/>
</columns>
</asp:DataGrid>
and here's the calculation part
Private Sub CalculatePayment()
Dim c_loan_amount, c_Payment
Dim amount As String = Datatable1.Select("f_price")
c_loan_amount = amount - (amount * Down.Text * 0.01)
c_Payment = ((c_loan_amount * (Interest.Text * 0.01) * Year.Text) + c_loan_amount) / (Year.Text * 12)
Payment.Text = "RM " & Format(c_Payment, "#,##0.00")
End Sub
It should be the Dim amount as string part right? I'm kinda new, thanks in advance.

Answer 1

You need to define the row and item.
Try
Dim amount As String = Datatable1.tables(0).Rows(0).Item(1)
Actually you should rename datatable1 to dataset1 since a datatable is a possible member of a dataset. Its just to minimize confusion of what is what.
The Rows tells which row of the datatable. The item tells which index.
0 = f_name
1 = f_amount