protected void studentload_Click(object sender, EventArgs e){//批量添加学生信息SqlConnection conn = DB.dataBaseConn();//链接数据库
           conn.Open();try{string fileurl = typename(studentFileUpload);//调用typename方法取得excel文件路径DataSet ds = new DataSet();//取得数据集ds = xsldata(fileurl);int errorcount = 0;//记录错误信息条数int insertcount = 0;//记录插入成功条数int updatecount = 0;//记录更新信息条数for (int i = 0; i < ds.Tables[0].Rows.Count; i++){string stuid = ds.Tables[0].Rows[i][0].ToString();string stuname = ds.Tables[0].Rows[i][1].ToString();string stusex = ds.Tables[0].Rows[i][2].ToString();string zhuanye = ds.Tables[0].Rows[i][3].ToString();string classname = ds.Tables[0].Rows[i][4].ToString();if (stuid != "" && stuname != "" && stusex != "" && zhuanye != "" && classname != ""){SqlCommand selectcmd = new SqlCommand("select count(*) from zy_class   where zhuanye='" + zhuanye + "'and classname='" + classname + "'", conn);int count = Convert.ToInt32(selectcmd.ExecuteScalar());if (count > 0){SqlCommand selectcmd2 = new SqlCommand("select count(*) from stud where   stuid='" + stuid + "'", conn);int count2 = Convert.ToInt32(selectcmd2.ExecuteScalar());if (count2 > 0){SqlCommand updatecmd = new SqlCommand("update stud set   stuname='" + stuname + "',stusex='" + stusex + "',zhuanye='" + zhuanyei + "',classname='" + classname + "'   where stuid='" + stuid + "'", conn);updatecmd.ExecuteNonQuery();updatecount++;}else{SqlCommand insertcmd= new SqlCommand("insert into stud    values('" + stuid + "','" + stuname + "','" + stusex + "','" + zhuanye + "','" + classname+ "')", conn);insertcmd.ExecuteNonQuery();insertcount++;}}else{Response.Write("<script language='javascript'>alert('专业或班级信息有错！导入失败！请检查！');</script>");break;  }}else{errorcount++;}}Response.Write("<script language='javascript'>alert('" + insertcount + "条数据导入成功！" + updatecount + "条数据更新成功！" + errorcount + "条数据部分信息为空没有导入！');</script>");}catch (Exception e){Response.Write("<script language='javascript'>alert('导入失败！');</script>");}finally{conn.Close();}    }//把EXCEL文件上传到服务器并返回文件路径private String typename(FileUpload fileloads){string fullfilename = fileloads.PostedFile.FileName;string filename = fullfilename.Substring(fullfilename.LastIndexOf("\\") + 1);string type = fullfilename.Substring(fullfilename.LastIndexOf(".") + 1);string murl = "";if (type == "xls"){fileloads.PostedFile.SaveAs(Server.MapPath("excel") + "\\" + filename);murl = (Server.MapPath("excel") + "\\" + filename).ToString();}else{Response.Write("<script language='javascript'>alert('导入文件格式不对!');</script>");}return murl;}//把excel数据读入dataset返回l数据集private DataSet xsldata(string filepath){string strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filepath + ";Extended Properties='Excel 8.0;IMEX=1'";System.Data.OleDb.OleDbConnection Conn = new System.Data.OleDb.OleDbConnection(strCon);string strCom = "SELECT * FROM [Sheet1$]";Conn.Open();System.Data.OleDb.OleDbDataAdapter myCommand = new System.Data.OleDb.OleDbDataAdapter(strCom, Conn);DataSet ds = new DataSet();myCommand.Fill(ds, "[Sheet1$]");Conn.Close();return ds;}