VB.net对于datagride控件的使用及C#中datagrideView\bindingSource\bindingNavigator\tabcontrol控件的应用

                //绑定数据源

                DataSet ds = new DataSet();
                SqlConnection connection = new SqlConnection(netiFace.ConnectionString.ConnectionString);
                connection.Open();
                SqlDataAdapter  da = new SqlDataAdapter("select * from dot", connection);
                da.Fill(ds, "dot");
                DataTable mytable = new DataTable();
                mytable = ds.Tables["dot"];
                dataGridView1.AutoGenerateColumns = true;
                dataGridView1.DataSource = mytable;
                dataGridView1.MultiSelect = false;//不可多选行
                bindingSource1.DataSource = mytable;
                bindingNavigator1.BindingSource = bindingSource1;

                //隐藏一个页签

                 this.tabControl2.TabPages.Remove(tabControl2.TabPages[2]);
                 this.tabControl1.TabPages.Remove(tabControl1.TabPages[3]);
                this.tabControl1.TabPages.Remove(tabControl1.TabPages[2]);

      -----------------------------   //bindingNavigator和dataGridView的联动----------------------------------------------

         bindingNavigatorMoveLastItem.Click += new System.EventHandler(this.MoveDataControl);

         bindingNavigatorMoveLastItem.Click += new