I have:
<form method="POST" name="f">
<input type="file" name="FileUpload" id="FileUpload" />
</form>
I'm sent the file using ajax,using the uplaod.file method:
document.getElementById('FileUpload').onchange = function() {
file = this.files[0];
ajax = new XMLHttpRequest;
ajax.file = file;
//etc..
ajax.open('post','Default.aspx', true);
ajax.setRequestHeader('foo','baa');
ajax.send(file);
}
Request.Forms["FileUplaod"] // don't works
How I get the value (the file) sent by ajax in my asp.net application?
I tried sent by http headers(is not pratice good,I know) but there problem with long length.
Thanks in advance.
try this form attribute :
form action="some/action" method="POST" enctype="multipart/form-data"
Related
I want to POST to URL but following making it as GET , so How can I POST the
Object portletResponse = webAppAccess.getHttpServletRequest()
.getAttribute(Constants.PORTLET_RESPONSE);
if (portletResponse instanceof javax.portlet.ActionResponse) {
javax.portlet.ActionResponse actionResponse = (javax.portlet.ActionResponse) portletResponse;
actionResponse.sendRedirect(URL);
}
Have you tried to use RequestDispater instead of response.sendRedirect?
It retains the original request, without changing it.
So, it will remain POST if it was POST.
I have done this by using FORM POST method as follows.
webAppAccess.processPage("importedPage");
Added this imported Page in model :
<HTML>
<HEAD>
<title>New Page</title>
</HEAD>
<Body onload="">
<form id="FormID" method="POST" action="actionURL">
<input type="hidden" name="id" id="ID" value="<%=webAppAccess.getVariables().getString("ID")%>"/>
<noscript>
<p>Your browser does not support JavaScript or it is disabled.
Please click the button below to process the request.
</p>
<input type="submit" value="Proceed " name ="submit"></input>
</noscript>
<script>
document.getElementById('FormID').submit();
</script>
</form>
and then MVC controller mapping as follows:
#RequestMapping(value = {"/Details"}, method = RequestMethod.POST)
public String mthDetails(final Model p_model, #RequestParam(value = "id", required = false) final String p_ID){
//code for further logic using ID
}
In Asp.net Entity Framework I need to forward to another page and pass some data processed by the second page along.
In PHP I could do something like
<!-- page1.php -->
<form action="page2.php" method="POST">
<input type="hidden" name="id" />
<input type="submit" value="Go to page 2" />
</form>
<!-- page2.php -->
<?php
echo $_POST['id'];
?>
How can this be implemented in Asp.net?
Edit: There is a simple solution using Javascript and jQuery.
<!-- on page 1 -->
$('input[type=submit]').on('click', function (e) {
// Forward to browsing page and pass id in URL
e.preventDefault();
var id= $('input[name=id]').val();
if ("" == id)
return;
window.location.href = "#Request.Url.OriginalString/page2?id=" + id;
});
<!-- on page 2 -->
alert("#Request.QueryString["id"]");
There are, at least, two options:
Session state, like this:
Putting data into Session (your first page)
Session["Id"] = HiddenFieldId.Value;
Getting data out of Session (your second page)
// First check to see if value is still in session cache
if(Session["Id"] != null)
{
int id = Convert.ToInt32(Session["Id"]);
}
Query string, like this:
Putting the value into the URL for the second page as a query string
http://YOUR_APP/Page2.aspx?id=7
Reading the query string in the second page
int id = Request.QueryString["id"]; // value will be 7 in this example
There's a lot of ways to do this, take a look at this link for some guidance.
HTML page:
<form method="post" action="Page2.aspx" id="form1" name="form1">
<input id="id" name="id" type="hidden" value='test' />
<input type="submit" value="click" />
</form>
Code in Page2.aspx:
protected void Page_Load(object sender, EventArgs e)
{
string value = Request["id"];
}
MVC would look like...
#using (Html.BeginForm("page2", "controllername", FormMethod.Post))
{
#Html.Hidden(f => f.id)
<input type="submit" value="click" />
}
also, read through these MVC tutorials, you shouldn't blindly translate what you know in PHP to ASP.NET MVC, since you need to learn the MVC pattern too.
You can also use <form> with method="POST" in ASP.NET. And get value in code:
int id = int.Parse(Request.Form["id"]);
I used upload functionality by html . using given code it's working fine .
<form id="avatar" enctype="multipart/form-data"
action="http://localhost:8080/alfresco/service/slingshot/profile/uploadavatar?
alf_ticket=TICKET_7475e180e8d258c0341fc745a3a35274d0a06e50"
method="post">
<input type="text" name="username" value="ken"/>
Select a file:
<input type="file" name="filedata" />
<input type="submit" name="button" value="upload" / /form
Same functionality I have tried in flex :
var uploadURL:URLRequest = new URLRequest();
uploadURL.url="http://localhost:8080/alfresco/service/slingshot/profile/uploadavatar?alf_ticket=TICKET_7475e180e8d258c0341fc745a3a35274d0a06e50"";
uploadURL.method=URLRequestMethod.POST;
uploadURL.contentType="multipart/form-data";
var params:URLVariables = new URLVariables();
params.username ="admin";
params.filedata=fileRef.data;
uploadURL.data = params;
fileRef.upload(uploadURL)
BUT GETTING Bad request error . so anybody know , what did i wrong in code . Please share with me .
In a POST request you are trying to send a parameter in URL..try sending alf_ticket as an attribute of params.
Request.Files doesn't work when I deploy to the server but it works when I test locally. What do I need to configure to make this work when deployed?
Some example of your code would be nice, but this post helped me once:
A Back To Basics Case Study: Implementing HTTP File Upload with ASP.NET MVC including Tests and Mocks
This post from Phil Haack can be useful for you:
<form action="" method="post" enctype="multipart/form-data">
<label for="file">Filename:</label>
<input type="file" name="file" id="file" />
<input type="submit" />
</form>
[HttpPost]
public ActionResult Index(HttpPostedFileBase file) {
if (file.ContentLength > 0) {
var fileName = Path.GetFileName(file.FileName);
var path = Path.Combine(Server.MapPath("~/App_Data/uploads"), fileName);
file.SaveAs(path);
}
return RedirectToAction("Index");
}
Note that here you do not examine the Request.Files collection. Also example for the multiple file upload can be found there (main idea that you should use the IEnumerable<HttpPostedFileBase> in similar manner).
UPDATE
So it turns out internet exploder's stranglehold on "security" to "make up" for being so bad at security was causing my problems. I should have checked that out first haha. Thanks everyone for the input, it has given me ideas on how to optimize my application :D
I am writing a web app (in ASP.NET 3.5) that integrates with a platform app. The platform app takes the user's credentials and puts them into an "empty" HTML page that consists of a form with hidden items containing said credentials and POSTS to the webapp (default.aspx):
<HTML>
<HEAD>
<SCRIPT LANGUAGE=JSCRIPT>
function OnLoad(){
try {
document.form1.submit();
}
catch(e){
}
}
</SCRIPT>
</HEAD>
<BODY OnLoad="OnLoad()">
<FORM ACTION="http://localhost:51816/gs_ontheweb/default.aspx" METHOD=POST NAME=form1 TARGET="_NEW">
<INPUT TYPE="HIDDEN" NAME="ClientID" VALUE="123456">
<INPUT TYPE="HIDDEN" NAME="Password" VALUE="2830088828">
<INPUT TYPE="HIDDEN" NAME="PracType" VALUE="051">
<INPUT TYPE="HIDDEN" NAME="Encrypt" VALUE="12345620081111">
</FORM>
</BODY>
</HTML>
When my default.aspx page gets loaded up, it calls the following function:
Dim ClientID As String = Request.Form("ClientID")
Dim PassWord As String = Request.Form("Password")
Dim PracType As String = Request.Form("PracType")
Each one of them result in empty strings. Any ideas on why this is happening? Thanks in advance.
EDIT: Is there something I need to configure in my web.config file to make this work properly? Request.Params("<param name>") does not work.
Your issue is the "Target" property on the Form. Why is this here?
(I also took the liberty of cleaning your HTML up a little)
<html>
<head>
<title>Test JS Post</title>
<script type="text/javascript" language="javascript">
<!--
function OnLoad(){
try
{
alert("Posting...");
document.form1.submit();
}
catch(e)
{
alert("ERROR!");
alert(e);
}
}
//-->
</script>
</head>
<body onload="OnLoad()">
<form action="http://localhost:49684/Default.aspx" method="post" name="form1">
<input type="hidden" name="ClientID" value="123456" />
<input type="hidden" name="Password" value="2830088828" />
<input type="hidden" name="PracType" value="051" />
<input type="hidden" name="Encrypt" value="12345620081111" />
<h1>This is in the form. Submit me here:</h1><input type="submit" value="foo" />
</form>
</body>
</html>
In the code behind of Default.aspx:
Private Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init
For Each value As String In Request.Form.Keys
Debug.WriteLine(String.Format("{0} = ""{1}""", value, Request.Form.Item(value)))
Next
End Sub
That HTML is just on the user's harddrive? Maybe the browser security won't let that POST because it's deemed to be a risk.
As a test -- take that exact HTML file and put it on your webserver and then browse to it. If it works, might be the browser refusing to send the data. You could check with Fiddler (for IE) or Firebug in FireFox.
Why not use System.Net.WebClient?
Some sample code (sorry, it's C#. Looks like your looking for VB. I can't translate quickly.)
System.Net.WebClient wc = new System.Net.WebClient();
byte[] b;
byte[] res;
string formdata = "text=test text&password=secret&checkbox=on&textarea=a longer text sentence&submit=submit";
// encode the form data string into a byte array
b = System.Text.Encoding.ASCII.GetBytes(formdata);
// set the content type for a form
wc.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
// POST and get data
res = wc.UploadData("http://localhost:51816/gs_ontheweb/default.aspx", b);
//convert the return page from byte[] to ascii
string s = System.Text.Encoding.ASCII.GetString(res);