我有工作代码上传CSV文件并在同一页面上查看它。我想在一个唯一的URL上查看每个文件。所以，像这样：
我还想要一个索引列表，其中显示每个上传的文件，然后用户可以选择要查看的文件。
查看
@using Read_CSV_MVC.Models
@model IEnumerable<CustomerModel>
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Index</title>
<style type="text/css">
body {
font-family: Arial;
font-size: 10pt;
}
table {
border: 1px solid #ccc;
border-collapse: collapse;
background-color: #fff;
}
table th {
background-color: #B8DBFD;
color: #333;
font-weight: bold;
}
table th, table td {
padding: 5px;
border: 1px solid #ccc;
}
table, table table td {
border: 0px solid #ccc;
}
</style>
</head>
<body>
@using (Html.BeginForm("Index", "Home", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
<input type="file" name="postedFile" />
<input type="submit" value="Import" />
}
@if (Model.Count() > 0)
{
<hr />
<table cellpadding="0" cellspacing="0">
<tr>
<th>Customer Id</th>
<th>Name</th>
<th>Country</th>
</tr>
@foreach (CustomerModel customer in Model)
{
<tr>
<td>@customer.CustomerId</td>
<td>@customer.Name</td>
<td>@customer.Country</td>
</tr>
}
</table>
}
</body>
</html>
控制器
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.IO;
using Read_CSV_MVC.Models;
namespace Read_CSV_MVC.Controllers
{
public class HomeController : Controller
{
// GET: Home
public ActionResult Index()
{
return View(new List<CustomerModel>());
}
[HttpPost]
public ActionResult Index(HttpPostedFileBase postedFile)
{
List<CustomerModel> customers = new List<CustomerModel>();
string filePath = string.Empty;
if (postedFile != null)
{
string path = Server.MapPath("~/Uploads/");
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
filePath = path + Path.GetFileName(postedFile.FileName);
string extension = Path.GetExtension(postedFile.FileName);
postedFile.SaveAs(filePath);
//Read the contents of CSV file.
string csvData = System.IO.File.ReadAllText(filePath);
//Execute a loop over the rows.
foreach (string row in csvData.Split('\n'))
{
if (!string.IsNullOrEmpty(row))
{
customers.Add(new CustomerModel
{
CustomerId = Convert.ToInt32(row.Split(',')[0]),
Name = row.Split(',')[1],
Country = row.Split(',')[2]
});
}
}
}
return View(customers);
}
}
}
模型
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace Read_CSV_MVC.Models
{
public class CustomerModel
{
///<summary>
/// Gets or sets CustomerId.
///</summary>
public int CustomerId { get; set; }
///<summary>
/// Gets or sets Name.
///</summary>
public string Name { get; set; }
///<summary>
/// Gets or sets Country.
///</summary>
public string Country { get; set; }
}
}
感谢任何帮助，谢谢！
答案 0 :(得分：0)
需要更改
public ActionResult Index(string id)
{
string path = Server.MapPath("~/Uploads/");
var Files = Directory.GetFiles(path);
List<CustomerModel> customers = new List<CustomerModel>();
if (!string.IsNullOrWhiteSpace(id) && Files.FirstOrDefault(x => x.Contains(id)) !=null) {
string filePath = Files.FirstOrDefault(x => x.Contains(id));
string csvData = System.IO.File.ReadAllText(filePath);
//Execute a loop over the rows.
foreach (string row in csvData.Split('\n'))
{
if (!string.IsNullOrEmpty(row))
{
customers.Add(new CustomerModel
{
CustomerId = Convert.ToInt32(row.Split(',')[0]),
Name = row.Split(',')[1],
Country = row.Split(',')[2]
});
}
}
}
ViewBag.files = Files.Select(x => x.Remove(x.LastIndexOf("."), x.Length - x.LastIndexOf(".")).Replace(path, "")).ToArray();
return View(customers);
}
[HttpPost]
public ActionResult Index(HttpPostedFileBase postedFile)
{
List<CustomerModel> customers = new List<CustomerModel>();
string path = Server.MapPath("~/Uploads/");
string filePath = string.Empty;
if (postedFile != null)
{
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
filePath = Path.Combine(path, postedFile.FileName);
postedFile.SaveAs(filePath);
string csvData = System.IO.File.ReadAllText(filePath);
//Execute a loop over the rows.
foreach (string row in csvData.Split('\n'))
{
if (!string.IsNullOrEmpty(row))
{
customers.Add(new CustomerModel
{
CustomerId = Convert.ToInt32(row.Split(',')[0]),
Name = row.Split(',')[1],
Country = row.Split(',')[2]
});
}
}
}
var Files = Directory.GetFiles(path);
ViewBag.files = Files.Select(x => x.Remove(x.LastIndexOf("."), x.Length - x.LastIndexOf(".")).Replace(path, "")).ToArray();
return View(customers);
}
并在视图中将此div添加到body标记内。
<div>
@if (ViewBag.files !=null)
{
foreach (var item in (string[])ViewBag.files)
{
@Html.ActionLink(item, "index", new { id = item }) <br />
}
}
</div>
它会起作用
答案 1 :(得分：0)
Your Code has many issue but answer to your question is as follows:
You Can Replace File Name by a GUID or any you prefer.
if (ModelState.IsValid)
{
string _filename = string.Empty;
if (file != null)
{
_filename = SaveFile(file);
}
cat.PictureName = _filename;
}
return View(cm);
}
// save file Method
private string SaveFile(HttpPostedFileBase file)
{
var fileName = Path.GetFileName(file.FileName);
var _ext = Path.GetExtension(file.FileName);
var sizeinKB = file.ContentLength / 1024;
// if you wnt to save path add path infornt of Guid.NewGuid() liKe
// string _filename = "~Images/Category/"+Guid.NewGuid().ToString();
string _filename = Guid.NewGuid().ToString();
var _comPath = HttpContext.Server.MapPath("~/Images/Category/")
+ _filename + _ext;
file.SaveAs(_comPath);
MemoryStream ms = new MemoryStream();
WebImage img = new WebImage(_comPath);
if (img.Width > 2000 || img.Height> 2000)
img.Resize(2000, 2000);
img.Save(_comPath);
_filename = _filename + _ext;
return _filename;
}