How to upload file and generate unique URL to display file in ASP.NET MVC -
i have working code upload csv-file view on same page. want view each file on unique url. so, this:
- user choses csv-file upload
- submits
- gets redirected unique url (e.g. /index/1234, 1234 unique id - each file get's uploaded has unique id let's unique id should "filename" or something)
- on unique url, content of file gets displayed
i want list on index every file uploaded get's displayed, , user can choose file view.
view
@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> controller
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 contents of csv file. string csvdata = system.io.file.readalltext(filepath); //execute loop on 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); } } } model
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; } } } any appreciated, thanks!
in controller need change
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 loop on 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 loop on 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); } and in view add div inside body tag.
<div> @if (viewbag.files !=null) { foreach (var item in (string[])viewbag.files) { @html.actionlink(item, "index", new { id = item }) <br /> } } </div> it works
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