asp.net 中excel 导入数据库

protected void Button1_Click(object sender, EventArgs e)

    {

        SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["LYConnectionString"].ConnectionString); ;//链接数据库

        conn.Open();

        try

        {

            string fileurl = typename(FileUpload1);//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();

                Response.Write(stuid);

                Response.Write(stuname);

                Response.Write(stusex);

                Response.Write(zhuanye);

                Response.Write(classname);

       

                if (stuid != "" && stuname != "" && stusex != "" && zhuanye != "" && classname != "")

                {

                    SqlCommand selectcmd = new SqlCommand("select count(*) from stud  ", 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='" + zhuanye + "',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

                    {

                        SqlCommand insertcmd = new SqlCommand("insert into  stud    values('" + stuid + "','" + stuname + "','"                       + stusex + "','" + zhuanye + "','" + classname + "')", conn);

                        insertcmd.ExecuteNonQuery();



 

                        //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 exp)

        //{

        //    Response.Write("<script language='javascript'>alert('导入失败！');</script>");

        //}

        finally

        {

            conn.Close();

        }    

    }

//判断上传文件，并保存文件

    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;

    }

 // 数据库导入数据集dataset

     private DataSet xsldata(string filepath)

     {

        string strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filepath + ";Extended Properties='Excel 8.0;IMEX=1'";
        //如果是导入excel2013版本，连接字符串则应该变成

          string strCon = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filepath + ";Extended Properties='Excel 12.0;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;

    }

}