标签：port 程序 new one 后台 datatable 查询 sub log
将Excel导入到数据库实现如下：
前台代码:
@model IEnumerable<Model.Student> @{ Layout = null; } <!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width" /> <title>Index</title> <script src="~/js/jquery.min.js"></script> <script> function ExcInput() { location.href = "/Home/ExcInput"; } </script> </head> <body> <div> <form action="/Home/Execl" method="post" enctype="multipart/form-data"> <input type="file" name="Exc" /> <input type="submit" value="导入" /> </form> <input type="submit" value="导出" onclick="ExcInput()"/> <table id="table"> <tr> <th>编号</th> <th>姓名</th> <th>年龄</th> <th>性别</th> </tr> @foreach (var item in Model) { <tr> <td>@item.id</td> <td>@item.name</td> <td>@item.age</td> <td>@item.sex</td> </tr> } </table> </div> </body> </html>
后台代码：
/// <summary> /// 初始化页面 /// </summary> /// <returns></returns> public ActionResult Index() { DAL.StudentDal dal = new DAL.StudentDal(); List<Student> ls = dal.GetStudentList(); return View(ls); } /// <summary> /// Excel上传部分 /// 导入 Import /// </summary> /// <param name="Exc"></param> /// <returns></returns> [HttpPost] public ActionResult Execl(HttpPostedFileBase Exc) { #region /// 上传部分 //如果当前的网站目录为E:\wwwroot 应用程序虚拟目录为E:\wwwroot\company 浏览的页面路径为E:\wwwroot\company\news\show.asp //在show.asp页面中使用 //Server.MapPath("./") 返回路径为：E:\wwwroot\company\news //Server.MapPath("/") 返回路径为：E:\wwwroot //Server.MapPath("../") 返回路径为：E:\wwwroot\company //Server.MapPath("~/") 返回路径为：E:\wwwroot\company string strfileName = Server.MapPath("/Word/"); //存储文件的地方 if (!Directory.Exists(strfileName)) //判断文件路径是否存在 { Directory.CreateDirectory(strfileName); } string fName = Path.GetFileName(Exc.FileName); //获取文件名 Exc.SaveAs(strfileName + fName); #endregion #region /// Execl导入部分 //execl文件读取 ExcelDAL exc = new ExcelDAL(); DataTable dt = exc.ExcelToDS(strfileName + fName); //把读取的数据导入到数据库 DAL.StudentDal dal = new DAL.StudentDal(); foreach (DataRow dr in dt.Rows) { Student student = new Student(); student.id = Convert.ToInt32(dr[0]); student.name = dr[1].ToString(); student.sex = dr[2].ToString(); student.age = Convert.ToInt32(dr[3]); dal.Add(student); } #endregion List<Student> ls = dal.GetStudentList();//查询出所有数据 return View("Index", ls); }
Excel导入导出帮助类 ExcelDAL.cs
using System; using System.Collections.Generic; using System.Data; using System.Linq; using System.Text; using System.Threading.Tasks; using Model; using System.Data.OleDb; namespace DAL { /// <summary> /// /// </summary> public class ExcelDAL { /// <summary> /// 将excel中的数据取出，填充到dataset中 /// </summary> /// <param name="path"></param> /// <returns></returns> public DataTable ExcelToDS(string path) { string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + path + ";Extended Properties=Excel 8.0;"; OleDbConnection conn = new OleDbConnection(strConn); OleDbDataAdapter oda = new OleDbDataAdapter("select * from [Sheet1$]", conn); DataSet ds = new DataSet(); oda.Fill(ds); return ds.Tables[0]; } /// <summary> /// 将单条数据插入到excel中 /// </summary> /// <param name="path"></param> /// <param name="e"></param> /// <returns></returns> public int ExcelToAdd(string path, Student student) { string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + path + ";Extended Properties=Excel 8.0;"; OleDbConnection conn = new OleDbConnection(strConn); conn.Open(); string SQL = "INSERT INTO [Sheet2$] ([编号],[姓名],[性别],[年龄]) VALUES(" + student.id + ",‘" + student.name + "‘,‘" + student.sex + "‘," + student.age + ")"; OleDbCommand cmd = new OleDbCommand(SQL, conn); int i = cmd.ExecuteNonQuery(); conn.Close(); conn.Dispose(); return i; } /// <summary> /// 通过循环将list中的数据插入到excel中 /// </summary> /// <param name="path">excel的路径</param> /// <param name="studentList">数据集合</param> /// <returns></returns> public int ExcelToAdd(string path, List<Student> studentList) { string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + path + ";Extended Properties=Excel 8.0;"; OleDbConnection conn = new OleDbConnection(strConn); conn.Open(); OleDbCommand cmd = new OleDbCommand("CREATE TABLE [Sheet1] ([编号] INT,[姓名] Text,[性别] Text,[年龄] int)", conn); cmd.ExecuteNonQuery(); foreach (Student e in studentList) { string SQL = "INSERT INTO [Sheet1$] ([编号],[姓名],[性别],[年龄]) VALUES(" + e.id + ",‘" + e.name + "‘,‘" + e.sex + "‘," + e.age + ")"; cmd = new OleDbCommand(SQL, conn); int i = cmd.ExecuteNonQuery(); } conn.Close(); conn.Dispose(); return 1; } } }
将数据库内容导出到Excel实现：
后台代码：
/// <summary> /// 导出 export /// </summary> /// <returns></returns> public ActionResult ExcInput() { #region /// 查询部分 DAL.StudentDal dal = new DAL.StudentDal(); List<Student> ls = dal.GetStudentList(); #endregion ExcelDAL exc = new ExcelDAL(); exc.ExcelToAdd("D:/studentDemo.xls", ls); return View(); }
前台界面如下：
需要注意的：
将Excel [导入到数据库] or 将数据 [导入到Excel]
标签：port 程序 new one 后台 datatable 查询 sub log
原文地址：http://www.cnblogs.com/shuai7boy/p/6980338.html
