最简单的上传文件

前台

1       <div class="upload">2           <asp:FileUpload ID="FileUpload1" runat="server"/>3           <asp:Button ID="BtnLoad" runat="server" Text="上传" onclick="BtnLoad_Click"/>4      </div>

后台

 1   PRotected void BtnLoad_Click(object sender, EventArgs e) 2         { 3             if (this.FileUpload1.FileName == "") 4             { 5                 Response.Write("<script>alert('没有上传文件')</script>"); 6                 return; 7             } 8             Dataaccess.dataDR datadr = new dataDR(); 9             datadr.delete("delete from dbo.autozhesuanxisubiao");10             string fileName = DateTime.Now.ToString("yyMMddhhmmss") + ".xls";11             string path = Server.MapPath("~/upload/Excel/") + fileName;12             FileUpload1.SaveAs(path);13 14             if (path != null)15             {16                 DataAccess.LoadSourceToDataAccess.loadAutoZhesSuangXiShu(path);17                 Response.Write("<script>alert('上传成功！')</script>");18             }19             else20             {21                 Response.Write("<script>alert('没有上传文件')</script>");22             }23         }