Update records in data grid

Hi:

Im developing a web based application in .net. I have a datagird with the edit feature enabled by using the textboxes which are bind to a dataset. when i try to change the values, i update the dataset but the database isn't modified. the code is as follows:

Private Sub DataGrid_plantdesc_UpdateCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataGridCommandEventArgs) Handles DataGrid_plantdesc.UpdateCommand
Dim uc, sa, pl As String

uc = e.Item.Cells(0).Text
sa = CType(e.Item.Cells(1).Controls(0), TextBox).Text
[COLOR=orange]
pl = CType(e.Item.Cells(2).Controls(0), TextBox).Text
[COLOR=orange]

Dim conn1 As New OleDb.OleDbConnection("Provider=MSDAORA.1;Password=eas;User ID=eas;Data Source=WETST920.world")
Dim sqlUpdate As String = " update plant_desc set subarea='" & UCase(sa) & "' , plant='" & UCase(pl) & "' where unit_code='" & UCase(uc) & "' "

the problem is at the begining, it doesnt read the new enetred data at the orange highlighted. it takes the previous data before clicking on the edit command.

any suggestions?

Please help.

Thanks

can anyone help me on this?

Thanks