MVC中将上一次导出的EXCEL文件导入验证并保存到数据库中

1、网页中加入file元素,并添加表单

@using (Html.BeginForm("StationImport", "home", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
    <input type="submit" id="btnInExcel" onclick="" name="btnInExcel" value="导入" /><input id="files" type="file" name="files"  />}

2、在后台控制器加入

（1）对上传文件判断；正确保存到服务器中，错误返回

（2）将保存的文件进行转换成datatable，

（3）对datatable进行数据验证，并保存到数据库中

#region 批量导入excel
[HttpPost]
public ActionResult StationImport(HttpPostedFileBase filebase)
{
HttpPostedFileBase file = Request.Files["files"];
string FileName;
string savePath;
if (file == null || file.ContentLength <= 0)
{
return Content("<script>alert('文件不能为空');location='" + Url.Action("UserManager", "home") + "' </script>");
}
else
{
string filename = Path.GetFileName(file.FileName);
int filesize = file.ContentLength;//获取上传文件的大小单位为字节byte
string fileEx = System.IO.Path.GetExtension(filename);//获取上传文件的扩展名
string NoFileName = System.IO.Path.GetFileNameWithoutExtension(filename);//获取无扩展名的文件名
int Maxsize = 4000 * 1024;//定义上传文件的最大空间大小为4M
string FileType = ".xls,.xlsx";//定义上传文件的类型字符串

FileName = NoFileName + DateTime.Now.ToString("yyyyMMddhhmmss") + fileEx;
if (!FileType.Contains(fileEx))
{
return Content("<script>alert('文件类型不对，只能导入xls和xlsx格式的文件');location='" + Url.Action("UserManager", "home") + "' </script>");
}
if (filesize >= Maxsize)
{
return Content("<script>alert('上传文件超过4M，不能上传');location='" + Url.Action("UserManager", "home") + "' </script>");
}
string path = AppDomain.CurrentDomain.BaseDirectory + "uploads/excel/";
Directory.CreateDirectory(path);
savePath = Path.Combine(path, FileName);
file.SaveAs(savePath);
}

//转换excel文件到datatable中
string strConn;
strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + savePath + ";" + "Extended Properties=Excel 8.0";
OleDbConnection conn = new OleDbConnection(strConn);
conn.Open();
OleDbDataAdapter myCommand = new OleDbDataAdapter("select * from [Sheet1$]", strConn);
DataSet myDataSet = new DataSet();
try
{
myCommand.Fill(myDataSet, "ExcelInfo");
}
catch (Exception ex)
{
ViewBag.error = ex.Message;
return View();
}
DataTable dt = myDataSet.Tables["ExcelInfo"].DefaultView.ToTable();

//数据验证..将dt保存到数据库中返回result结果
string msg = result?"导入成功":"导入失败";
System.Threading.Thread.Sleep(2000);
return Content("<script>alert('" + msg + "');location='" + Url.Action("UserManager", "home") + "' </script>");

}
#endregion