Insert, Update & Delete in WPF DataGrid

        OleDbConnection Con_Admin = new OleDbConnection();
        BindingSource bs = new BindingSource();
        OleDbDataAdapter da;
        DataTable dt; 

public void Show_Admin_GridView()
        {
            try
            {
                Con_Admin.Open();
            }
            catch { }


            dataGridView1.DataSource = null;

            da = new OleDbDataAdapter(frm2_HomePage.frm8_Admin_GridQry, Con_Admin);
            OleDbCommandBuilder MyCommandBuilder = null;
            MyCommandBuilder = new OleDbCommandBuilder(da);
            dt = new DataTable();
            da.Fill(dt);
            bs.DataSource = dt;
            dataGridView1.DataSource = bs;
            dataGridView1.Enabled = true;

            dataGridView1.AutoResizeColumns();

            try
            {
                Con_Admin.Close();
            }
            catch { }

        }

        public void SaveChanges()
        {
            try
            {
                da.Update(dt);
            }
            catch (Exception exceptionObj)
            {
                MessageBox.Show(exceptionObj.Message.ToString());
            }
            
        }