[2005] Need Some Help W/ GridView RowEditing

Basically I am new to ASP.NET, I am originally an Application Developer. I can click the edit button on the GridView and the edit text box's appear, but how do I preserve the data already in that field so that someone can just edit it? Here is all the code:

Protected Sub form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles form1.Load
If Not Page.IsPostBack Then
'Create a Connection to the DB
Dim str As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=F:\Visual Basic Projects\Visual C#.NET 2005\Databaes\db_try3\try3\Mydb.mdb"

conn = New OleDbConnection(str)
conn.Open()

'Create the DataAdapter and SQL Query
da = New OleDbDataAdapter("select * FROM MyUsers", conn)
cb = New OleDbCommandBuilder(da)

'Create the Dataset and Fill it
ds = New System.Data.DataSet
da.Fill(ds, "MyUsers")

Me.GridView1.DataSource = ds
Me.GridView1.DataMember = "MyUsers"
Me.GridView1.AutoGenerateColumns = True
Me.GridView1.DataBind()
End If
End Sub

Protected Sub GridView1_RowEditing(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewEditEventArgs) Handles GridView1.RowEditing
GridView1.EditIndex = e.NewEditIndex
End Sub

Thanks a million,

Joshua