File Upload To HTTP Server From IPhone Application
Jan 11, 2010
Could someone please tell me/link me to how I could create a method similar to those posted below: [URL] (I am providing the links as I'm not sure how to articulate this question without them!) I'm using C# ASP.NET. IIS 6. I have an existing web server with other public API methods. I do not want the iPhone user to have to open a web browser, and post to an aspx page. I want the iPhone developer to be able to call my method, and have one of the parameters be a handle to the file which gets POSTed.
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Similar Messages:
Dec 30, 2010
In my current project, my client application first talk with the server and the server returned an upload url for me to upload a file, the url looks like this: [URL] Then I want to use HTTP PUT method to upload the local "c:pesult.cab" to the above loacation. How could I do this? And could anyone give me a detailed description about the whole uploading mechanism? When I use a ASP.NET upload control, I just click the browse button to locate my file and click submit, and on the server side, I just call the SaveAs() method of the upload control. Here is some code:
protected void UploadButton_Click(object sender, EventArgs e)
{
if(FileUploadControl.HasFile)
{
try
{
string filename = Path.GetFileName(FileUploadControl.FileName);
FileUploadControl.SaveAs(Server.MapPath("~/") + filename);
StatusLabel.Text = "Upload status: File uploaded!";
}
catch (Exception ex)
{
StatusLabel.Text = "Upload status: The file could not be uploaded. The following error occured: " + ex.Message;
}
}
}
Who is responsible for reading the file and sending it? What happens when I call FileUploadControl.SaveAs() method? Does the server pull the file from client, or the client push the file to the server? I know HTTP is text based, but my result.cab is not text, so is it Base64 encoded before being sent? How does HTTP PUT method work? Is it a client side push, or a server side pull? Or interaction of both like some kind of handshake?
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Oct 8, 2010
I have a webpage with an asp.net 2.0 upload file control, it works on Windows, but not in the IPad/IPhone, the textbox of the upload control has disappeared, and the button of the upload control is disabled.
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Mar 30, 2010
My application in published in web server A. From my application I am uploading file to a folder that is in server B. I have windows authentication in web.config file and all the servers are in same network.
I am getting Access Denied error message when I try to upload a file from my application.
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Mar 20, 2011
I am using libcurnet for posting some fields and html or pdf file to server. I post fields but can not upload file to server.
Here is my code :
public static void Main(String[] args)
{ try {
Curl.GlobalInit((int)CURLinitFlag.CURL_GLOBAL_ALL);
FileStream fs = new
FileStream(args[0], FileMode.Open, FileAccess.Read, FileShare.Read);
Easy easy = new Easy();
Easy.ReadFunction rf = new Easy.ReadFunction(OnReadData);
easy.SetOpt(CURLoption.CURLOPT_READFUNCTION,rf);
easy.SetOpt(CURLoption.CURLOPT_UPLOAD, true);
easy.SetOpt(CURLoption.CURLOPT_PUT, true);
easy.SetOpt(CURLoption.CURLOPT_URL, args[1]);
easy.SetOpt(CURLoption.CURLOPT_READDATA, fs);
easy.SetOpt(CURLoption.CURLOPT_INFILESIZE, fs.Length);
Easy.DebugFunction df = new Easy.DebugFunction(OnDebug);
easy.SetOpt(CURLoption.CURLOPT_DEBUGFUNCTION, df);
easy.SetOpt(CURLoption.CURLOPT_VERBOSE, true);
Easy.ProgressFunction pf = new Easy.ProgressFunction(OnProgress);
easy.SetOpt(CURLoption.CURLOPT_PROGRESSFUNCTION, pf);
Easy.WriteFunction wf = new Easy.WriteFunction(OnWriteData);
easy.SetOpt(CURLoption.CURLOPT_WRITEFUNCTION, wf);
easy.SetOpt(CURLoption.CURLOPT_POSTFIELDS, args[2]);
easy.SetOpt(CURLoption.CURLOPT_USERAGENT, "Mozilla 4.0 (compatible; MSIE 6.0; Win32");
easy.SetOpt(CURLoption.CURLOPT_FOLLOWLOCATION, true);
easy.SetOpt(CURLoption.CURLOPT_POST, true);
easy.SetOpt(CURLoption.CURLOPT_VERBOSE, 1);
easy.SetOpt(CURLoption.CURLOPT_STDERR, 0);
easy.Perform();
easy.Cleanup();
fs.Close();
Curl.GlobalCleanup(); } catch (Exception ex) {
Console.WriteLine(ex); } }
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Feb 4, 2011
I'd like to understand what happen under the hood when you do an web upload. I guess one of these: The file is loaded in memory by the browser, sent to the web server buffer memory, and then the app is notified to collect it. The file is being readed by the browser and at the same time sent to the web server, that can start to save the bytes progresively. I've tried to upload a very large file, and put a breakpoint on the frist line of the method receiving the upload. I've seen how the browser toke a lot of time loading... but the breakpoint was still not hit, and after a while the breakpoint is hit. I want to understand this, because in the worst scenario, if I allow big uploads, they could blow up the server memory at some point. What does happen if I upload a 2Gb file? (considering that the web server/app accepts that length) would it take 2Gb of server memory?
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Mar 23, 2011
I'm trying to upload a file to an ASP 2.0 web service through HTTP 1.1 POST from a client-side application. If my web service function is declared as
<WebMethod()>
Public Function UploadFile(ByVal file as Byte(), ByVal fileName as String) as String
...
The test form says the request should take this form:
POST address_of_service HTTP/1.1
Host: <host>
Content-Type: application/x-www-form-urlencoded
Content-Length: length
file=string&file=string&fileName=string
How do I get my binary file data into that form? I've tried just converting the file data to a string and putting it in the body (file=<string_data_here>) but I get HTTP 500 errors back, complaining about not being able to convert it to System.Byte. I've got HTTP POST working fine elsewhere in my application with plain string parameters. Also, out of curiosity, why is it showing the file parameter twice?
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Jun 16, 2010
logging to another website and uploading file to that site.
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Aug 25, 2010
Server Error in '/' Application. Access to the path 'c:InetpubEnewsAttFilesemploy-e-header2.jpg' is denied. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.UnauthorizedAccessException: Access to the path 'c:InetpubEnewsAttFilesemploy-e-header2.jpg' is denied.
ASP.NET is not authorized to access the requested resource. Consider granting access rights to the resource to the ASP.NET request identity. ASP.NET has a base process identity (typically {MACHINE}ASPNET on IIS 5 or Network Service on IIS 6) that is used if the application is not impersonating. If the application is impersonating via <identity impersonate="true"/>, the identity will be the anonymous user (typically IUSR_MACHINENAME) or the authenticated request user. To grant ASP.NET access to a file, right-click the file in Explorer, choose "Properties" and select the Security tab. Click "Add" to add the appropriate user or group. Highlight the ASP.NET account, and check the boxes for the desired access.
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May 29, 2010
How do I upload Image/Photo from my Iphone to webserver. At web server I am using ASP.net c#.
On Iphone i have image displayed on UIImage Control and that image I am getting from database from BLOB datatype column.
how do I save that image bytes to application folder and then send image file to webserver.
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Jun 30, 2010
I have a web application and I'm using asp.net routing. When I publish it with the Only files needed to run this application selected it gives me an error when I'm loading any of the page "HTTP Error 404 - File or directory not found."
but if I choose publish All files it works fine.
Do you know how to resolve this issue?
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Jan 13, 2010
I am using the async file upload control to upload to a image file. I want the user to upload only jpg files. And for that I am checking the uploadedfile content type in server side, after the upload complets. I wanna check this, before upload starts. There is one javascript method
function startUpload(sender, args){}
but how to access the content type of the file selected by user.
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Jan 30, 2010
how to upload n download file in mobile application
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Aug 25, 2010
I am using File Upload Control in my web application,I have to save the full path of Selected File in database.But File Upload Control is not giving full path of selected path like
D:DotNetwebsiteImages1-IMG_0673.jpg
But when i m trying to get path from textbox of File Upload Control in code behind it escape the Images directory from path and it gives
D:DotNetarvind1-IMG_0673.jpg
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Jun 2, 2010
We have develop one application in silverlight..
We want more information about how we can use this silverlight application on IPHONE.
Basic requirement is silverlight application should work on IPHONE.
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Mar 25, 2010
I have to copy a file from client machine to server folder without use file upload control.
i tried with WebClient().Like this
Dim onbjweb As New WebClient()
onbjweb.UploadFile(Server.MapPath(serverpath), "POST", LocalFilePath).
Its working fine in localhost.When its deployed in server its not working.
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Dec 4, 2010
I'm using ASP.NET with MVC 2 and have trouble translating a local file url to a server address. It would seem like a fairly simple and common task, but google searches gives me no good answers. (Perhaps i suck at searching)
I have a controller that takes a file from a html form in a view and saves it to disk. I need to return the real url of this file back to the View. Whatever method i use, I always get a string with the local path of the file instead of the http path.
I suspect the url might get translated to http address once the project has been deployed, but I really need the server address when debugging without having to hardcode anything.
Consider the following example in some controller method:
string url = Url.RequestContext.HttpContext.Server.MapPath("~/Content/Files/" + Path.GetFileName(file.FileName));
// outputs: "C:\Users\xxx\Documents\Visual Studio 2010\Projects\[ProjectName]\Content\Files\file.png"
// whereas i'd like something like "http://localhost/Content/Files/file.png" instead
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Jan 28, 2010
i m using asp.net fileUploader controle to upload file in mobile application but file is not uploading.
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Mar 14, 2011
i am developing file upload application,i have .ashx file where i have a value in a string variable mydata.
in my .aspx page when i click on any button then data which is store in mydata variable in ashx file it show in text box.
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Nov 30, 2015
My application allows a user to upload a file using the FileUpload control. The data contained in the uploaded file is then displayed to the user in a Grid for review if certain field validation criteria is met otherwise, a message is displayed stating that invalid data was encountered. If the data displayed is satisfactory, they have a 'Process Data' button to add the data to the system.
Initially, I used a simple If/Else block to determine if there was a file selected or not and if not, display a message to the user. As the coding got more complicated, this stopped working and I was told to use the RequiredFieldValidator control instead to get around the issues that arose.Now, I have a new issue: after the uploaded file data passes field criteria validation, the FileUpload box is cleared automatically and so when the user clicks the 'Process Data' button, the VC throws a message stating that the file name is missing from the FileUpload box.
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Jan 30, 2010
How do I upload a file on the web server and save the link of the file in a database?
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Jun 4, 2010
I want develop small iphone blog application. How can i do it. I want steps should i follow? I am beginner for iphone application,
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Mar 22, 2010
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