public DataGridViewC()
        {
            this.GridColor = Color.Green;
            this.BackgroundColor = Color.Linen;            this.VirtualMode = true;
            this.AllowUserToAddRows = false;
            this.AllowUserToDeleteRows = false;
            this.AllowUserToOrderColumns = true;
            this.ReadOnly = true;
            this.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.None;
            this.AllowUserToResizeColumns = true;
            this.ClipboardCopyMode = DataGridViewClipboardCopyMode.EnableAlwaysIncludeHeaderText;
            this.DataSource = null;
            this.DataSourceChanged += new EventHandler(GridViewDataSourceChanged);
            AddContextMenu();
            GC.Collect();
        }问题:其中 this.DataSourceChanged += new EventHandler(GridViewDataSourceChanged); 这句话的意思是不是:DataSourceChanged激法是,就执行 GridViewDataSourceChanged方法?