都做到这一步了，删除应该不成问题吧。

参考：

http://space.cnblogs.com/question/4365/

http://www.cnblogs.com/longwei/archive/2010/05/26/1744513.html

思路最重要，你要想要整个逻辑在细分一点一点进行。比如你点删除的时候要找到你勾选的信息，在依次删除

 　　我来做一个例子吧！　　

　　if ($("#showStu input:checked").length > 0) {//判断选中的个数
                        if (confirm("确定要删除吗？")) {
                            var relst = "";
                            var cheked = $("#showStu input:checked").each(function () {
                                relst += $(this).val() + ",";　　//这到上就是要吧选中的id给记下来
                            })
                            $.ajax({
                                type: "POST",
                                url: "路由"
                                data: "id=" + relst,
                                datatype: "text",
                                success: function (msg) {
                                    if (msg == "OK") {
                                        alert("删除成功");

                                    }
                                    else {
                                        alert("失败!");
                                    }
                                }
                            });
                        };
                    }
                    else {
                        alert("请选择");
                    }

最后在后台调用时要注意哦

 id= StuNo.Substring(0, id.Length - 1);
            string[] id= id.Split(',');

修改 沅江 的代码： if ($("input[name=choosecheck]:checked").length > 0)  其他相同修改即可..