xls表格导入数据库功能实例代码

protected void button1_click(object sender, eventargs e)
        {

            if (fileupload1.hasfile == false)
            {
                page.clientscript.registerstartupscript(this.gettype(), "shifou", "<script>alert('请您选择   excel文件')</script> ");
                return;
            }
            string name = fileupload1.postedfile.filename; //获取初始文件名
            int j = name.lastindexof("."); //取得文件名中最后一个"."的索引
            string newext1 = name.substring(j); //获取文件扩展名
            if (newext1 != ".xls" && newext1 != ".xlsx")
            {
                page.clientscript.registerstartupscript(this.gettype(), "wenjian", "<script>alert('只可以选择  excel文件')</script>");
                return;//当选择的不是excel文件时,返回
            }
            sqlconnection cn = new sqlconnection(configurationmanager.appsettings["connectionstring"]);
            cn.open();
            //savepath = path.getfullpath(fileupload1.postedfile.filename);//    fileupload1.postedfile.filename.tostring();
            if (fileupload1.hasfile == false)//hasfile用来检查fileupload是否有指定文件
            {
                page.clientscript.registerstartupscript(this.gettype(), "wenjian", "<script>alert('excel路径有  问题')</script>");
                return;//当无文件时,返回
            }

            filename = fileupload1.filename;  //path.getfilenamewithoutextension  (fileupload1.postedfile.filename);
            savepath = server.mappath(("../../uploadfiles/xls/") + filename);
            fileupload1.saveas(savepath); //保存xls文件

            dataset ds = execleds(savepath, filename);          //调用自定义方法
            datarow[] dr = ds.tables[0].select();            //定义一个datarow数组
            int rowsnum = ds.tables[0].rows.count;
            if (rowsnum == 0)
            {
                //当excel表为空时,对用户进行提示
                page.clientscript.registerstartupscript(this.gettype(), "kong", "<script>alert('excel表为空表,   无数据!')</script>");
            }
            else
            {
                    for (int i = 0; i < dr.length; i++)
                    {

　　　　　　　　//自定义的model-student
                        student.belong = "";
                        student.birthday = convert.todatetime("1990-1-1");
                        student.classid = 1;
                        student.id = 1;
                        student.inschool = convert.todatetime("1990-1-1");
                        student.phone = "";
                        student.sex = "";
                        student.type = "";
                        student.isaudite = "否";
                        student.roleid = convert.toint32("22");
                        try
                        {
                            student.stuname = dr[i]["姓名"].tostring();
                            student.stuid = dr[i]["学号"].tostring();
                            student.username = dr[i]["姓名"].tostring();
                            student.userpassword = dr[i]["学号"].tostring();
                        }
                        catch(exception ex) {
                            response.write("<script>alert('"+ex.message+"')</script>");
                            return;
                        }
                        dataset ds2 = studentbll.getlist("stuid='" + dr[i]["学号"].tostring() + "'");
                        if (ds2.tables[0].rows.count == 0)
                        {
                            try
                            {
                                bool addstudent = convert.toboolean(studentbll.add(student));
                                if (addstudent)
    page.clientscript.registerstartupscript(this.gettype(), "daochu",     "<script>alert('excle表导入成功!')</script>");
                            }
                            catch (membershipcreateuserexception ex)       //捕捉异常
                            {
                                page.clientscript.registerstartupscript(this.gettype(), "chongfu",      "<script>alert('导入内容:" + ex.message + "')</script> ");
                            }
                        }
                        else
                        {
                            page.clientscript.registerstartupscript(this.gettype(), "chongfu", "<script>alert    ('内容重复！禁止导入')</script> ");
                            continue;
                        }
                    }
            }
        }

  public dataset execleds(string filenameurl, string table)
        {
            string strconn = "provider=microsoft.jet.oledb.4.0;data source=" + filenameurl + ";extended properties='excel 8.0;hdr=yes;imex=1;'";//这段字符串注意空格别写错否则会报错
            oledbconnection conn = new oledbconnection(strconn);
            oledbdataadapter odda = new oledbdataadapter("select * from [sheet18$]", conn);//【sheet18$】是表格名

            dataset ds = new dataset();
            odda.fill(ds, table);
            return ds;
        }