http://blog.csdn.net/jeryler/article/details/7876376

修改 zedGraphControl的ContextMenuBuilder事件即可！

 zedGraphControl2.ContextMenuBuilder += MyContextMenuBuilder;

private static void MyContextMenuBuilder(ZedGraphControl control, ContextMenuStrip menuStrip,
                    Point mousePt, ZedGraphControl.ContextMenuObjectState objState)
        {
            foreach (ToolStripMenuItem item in menuStrip.Items)
            {
                switch (item.Name)
                {
                    case "copied_to_clip":
                        item.Text = @"复制到剪贴板";
                        break;
                    case "copy":
                        item.Text = @"复制";
                        break;
                    case "page_setup":
                        item.Text = @"页面设置...";
                        break;
                    case "print":
                        item.Text = @"打印...";
                        break;
                    case "save_as":
                        item.Text = @"另存图表...";
                        break;
                    case "set_default":
                        item.Text = @"恢复默认大小";
                        break;
                    case "show_val":
                        item.Text = @"显示节点数值";
                        break;
                    case "title_def":
                        item.Text = @"标题";
                        break;
                    case "undo_all":
                        item.Text = @"还原缩放/移动";
                        break;

                    case "unpan":
                        item.Text = @"还原移动";
                        break;

                    case "unzoom":
                        item.Text = @"还原缩放";
                        break;

                    case "x_title_def":
                        item.Text = @"X 轴";
                        break;
                    case "y_title_def":
                        item.Text = @"Y 轴";
                        break;

                }
            }
        }