Because many things changed from DataGrid to DataGridView, I am not very educated in new DataGridView.

Basic Filling DataGridView

DA = New OleDb.OleDbDataAdapter("Select id,name From id_name", con)
DT = New DataTable
DA.Fill(DT)
Me.DataGridView1.DataSource = DT

I put small example how to trace datagrid changes in attached code

Using DataAdapter to commit updates to database
(see GridView tab in demo)

If you preserves DT, and DA somewhere, after filling datagridview, you can use them again to ease your modifications above database according to gridview. [msdn 1, 2]

DA.UpdateCommand = New OleDb.OleDbCommand()
DA.UpdateCommand.Connection = con
DA.UpdateCommand.CommandText = "Update id_name set name=? Where id=?"
DA.UpdateCommand.Parameters.Add("name", OleDb.OleDbType.VarChar, 10, "name")
DA.UpdateCommand.Parameters.Add("oldId", OleDb.OleDbType.Integer, 4, "oldId")

DA.InsertCommand = New OleDb.OleDbCommand
DA.InsertCommand.Connection = con
DA.InsertCommand.CommandText = "Insert Into id_name(id,name) Values(?,?)"
DA.InsertCommand.Parameters.Add("id", OleDb.OleDbType.Integer, 4, "id")
DA.InsertCommand.Parameters.Add("name", OleDb.OleDbType.VarChar, 10, "name")

DA.DeleteCommand = New OleDb.OleDbCommand
DA.DeleteCommand.Connection = con
DA.DeleteCommand.CommandText = "Delete From id_name Where id=?"
DA.DeleteCommand.Parameters.Add("id", OleDb.OleDbType.Integer, 4, "oldId")

DA.Update(dt)

I will welcome and add any linkage to yours DF articles about datagridview, or datagrid.