So got an small problem. Im creating an small application to automate an form submission on one website. But the bad thing is that they are using multipart/form-data for that.
There is no file uploading just some text fields for submission.
Of course doing it like this it fails.
string postData1 = "firstfield="+firststring+"secondfield="+secondstring;
So my question is how the hell post those form fields with multipart form?
Posting like arrays in php like this:
$postdata = array('firstfield' => $firststring, 'secondfield' => $secondstring);
works and passes the form but seems not working with c#
Any suggestions?
Data submission goes through 3 page ( basic screenscrape ) login/part1/part2
So far i can log in successfully and post part1 (uses normal application/x-www-form-urlencoded form )
But when ill try to post multipart form it fails and sends me back to part1. So maybe is my code wrong but here it is:
string password = "password";
string username = "username";
string link = "http://somelink.com/";
string text = "Blah Blah some text here";
string title = "Blah Blah";
string tags1 = title;
string summary = "Blah Blah summary";
string tags = tags1.Replace(" ", ",");
// Set cookie container
CookieContainer cookieJar = new CookieContainer();
string loginData = "username=" + username + "&password=" + password + "&processlogin=1&return=%2Fsubmit.php";
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create("http://loginlink.com/login.php");
myRequest.Method = "POST";
myRequest.ServicePoint.Expect100Continue = false;
myRequest.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.4) Gecko/20091016 Firefox/3.5.4 GTB6 (.NET CLR 3.5.30729)";
myRequest.Timeout = 10000;
myRequest.ContentType = "application/x-www-form-urlencoded";
myRequest.ContentLength = loginData.Length;
myRequest.CookieContainer = cookieJar;
myRequest.KeepAlive = true;
myRequest.AllowAutoRedirect = true;
//Write post data to stream
StreamWriter myWriter = new StreamWriter(myRequest.GetRequestStream());
myWriter.Write(loginData);
myWriter.Close();
// Get the response.
HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
// Open the stream using a StreamReader for easy access.
StreamReader myReader = new StreamReader(myResponse.GetResponseStream());
// Read the content.
string output = myReader.ReadToEnd();
// Clean up the streams and the response.
myReader.Close();
myResponse.Close();
Match matchkey = Regex.Match(output, "type=\"hidden\" name=\"randkey\" value=\"([^\"]+)\"", RegexOptions.IgnoreCase);
string key1 = matchkey.Groups[1].Value;
Match matchid = Regex.Match(output, "type=\"hidden\" name=\"id\" value=\"([^\"]+)\"", RegexOptions.IgnoreCase);
string id1 = matchid.Groups[1].Value;
string postData = "url=" + link + "&phase=1&randkey=" + key1 + "&id=" + id1;
HttpWebRequest myRequest2 = (HttpWebRequest)WebRequest.Create("http://submitpage1.com/submit.php");
myRequest2.Method = "POST";
myRequest2.ServicePoint.Expect100Continue = false;
myRequest2.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.4) Gecko/20091016 Firefox/3.5.4 GTB6 (.NET CLR 3.5.30729)";
myRequest2.Timeout = 10000;
myRequest2.ContentType = "application/x-www-form-urlencoded";
myRequest2.ContentLength = postData.Length;
myRequest2.CookieContainer = cookieJar;
myRequest2.KeepAlive = true;
myRequest2.AllowAutoRedirect = true;
//Write post data to stream
StreamWriter myWriter2 = new StreamWriter(myRequest2.GetRequestStream());
myWriter2.Write(postData);
myWriter2.Close();
// Get the response.
HttpWebResponse myResponse2 = (HttpWebResponse)myRequest2.GetResponse();
// Open the stream using a StreamReader for easy access.
StreamReader myReader2 = new StreamReader(myResponse2.GetResponseStream());
// Read the content.
string output1 = myReader2.ReadToEnd();
// Clean up the streams and the response.
myReader2.Close();
myResponse2.Close();
Match matchkey1 = Regex.Match(output1, "type=\"hidden\" name=\"randkey\" value=\"([^\"]+)\"", RegexOptions.IgnoreCase);
string key2 = matchkey1.Groups[1].Value;
Match matchid1 = Regex.Match(output1, "type=\"hidden\" name=\"randkey\" value=\"([^\"]+)\"", RegexOptions.IgnoreCase);
string id2 = matchid1.Groups[1].Value;
string boundary = "-----------------------------1721856231228";
// Build up the post
StringBuilder sb = new StringBuilder();
sb.Append("\r\n" + boundary + "\r\n");
sb.Append("Content-Disposition: form-data; name=\"title\"" + "\r\n");
sb.Append("\r\n");
sb.Append(title);
sb.Append("\r\n--" + boundary + "\r\n");
sb.Append("Content-Disposition: form-data; name=\"tags\"" + "\r\n");
sb.Append("\r\n");
sb.Append(tags);
sb.Append("\r\n--" + boundary + "\r\n");
sb.Append("Content-Disposition: form-data; name=\"bodytext\"" + "\r\n");
sb.Append("\r\n");
sb.Append(text);
sb.Append("\r\n--" + boundary + "\r\n");
sb.Append("Content-Disposition: form-data; name=\"summarycheckbox\"" + "\r\n");
sb.Append("\r\n");
sb.Append("on");
sb.Append("\r\n--" + boundary + "\r\n");
sb.Append("Content-Disposition: form-data; name=\"summarytext\"" + "\r\n");
sb.Append("\r\n");
sb.Append(summary);
sb.Append("\r\n--" + boundary + "\r\n");
sb.Append("Content-Disposition: form-data; name=\"remLen\"" + "\r\n");
sb.Append("\r\n");
sb.Append("125");
sb.Append("\r\n--" + boundary + "\r\n");
sb.Append("Content-Disposition: form-data; name=\"category\"" + "\r\n");
sb.Append("\r\n");
sb.Append("1");
sb.Append("\r\n--" + boundary + "\r\n");
sb.Append("Content-Disposition: form-data; name=\"trackback\"" + "\r\n");
sb.Append("\r\n");
sb.Append("");
sb.Append("\r\n--" + boundary + "\r\n");
sb.Append("Content-Disposition: form-data; name=\"url\"" + "\r\n");
sb.Append("\r\n");
sb.Append(link);
sb.Append("\r\n--" + boundary + "\r\n");
sb.Append("Content-Disposition: form-data; name=\"phase\"" + "\r\n");
sb.Append("\r\n");
sb.Append("2");
sb.Append("\r\n--" + boundary + "\r\n");
sb.Append("Content-Disposition: form-data; name=\"randkey\"" + "\r\n");
sb.Append("\r\n");
sb.Append(key2);
sb.Append("\r\n--" + boundary + "\r\n");
sb.Append("Content-Disposition: form-data; name=\"id\"" + "\r\n");
sb.Append("\r\n");
sb.Append(id2);
sb.Append("\r\n--" + boundary + "--" + "\r\n");
string postData1 = sb.ToString();
HttpWebRequest myRequest3 = (HttpWebRequest)WebRequest.Create("http://submitpage2.com/submit.php");
myRequest3.Method = "POST";
myRequest3.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.4) Gecko/20091016 Firefox/3.5.4 GTB6 (.NET CLR 3.5.30729)";
myRequest3.Timeout = 10000;
myRequest3.ServicePoint.Expect100Continue = false;
myRequest3.Referer = "http://bookmarkindo.com/submit.php";
myRequest3.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
myRequest3.ContentType = "multipart/form-data; boundary=" + boundary;
myRequest3.ContentLength = postData1.Length;
myRequest3.CookieContainer = cookieJar;
myRequest3.KeepAlive = true;
myRequest3.AllowAutoRedirect = true;
//Write out postdata
StreamWriter myWriter3 = new StreamWriter(myRequest3.GetRequestStream());
myWriter3.Write(postData1);
myWriter3.Close();
// Get the response.
HttpWebResponse myResponse3 = (HttpWebResponse)myRequest3.GetResponse();
// Open the stream using a StreamReader for easy access.
StreamReader myReader3 = new StreamReader(myResponse3.GetResponseStream());
// Read the content.
string output2 = myReader3.ReadToEnd();
// Clean up the streams and the response.
myReader3.Close();
myResponse3.Close();
All suggestions are welcome
posts os multipart/form-data type have a different structure because they are meant to transfer data and not just plain text.
Here's the format:
--[random number, a GUID is good here]
Content-Disposition: form-data; name="[name of variable]"
[actual value]
--[random number, a GUID is good here]--
Using HTTPWebRequest you can create a request that has that format. Here's a sample:
string boundary = Guid.NewGuid().ToString();
string header = string.Format("--{0}", boundary);
string footer = string.Format("--{0}--", boundary);
StringBuilder contents = new StringBuilder();
contents.AppendLine(header);
contents.AppendLine(header);
contents.AppendLine(String.Format("Content-Disposition: form-data; name=\"{0}\"", "username"));
contents.AppendLine();
contents.AppendLine("your_username");
contents.AppendLine(header);
contents.AppendLine(String.Format("Content-Disposition: form-data; name=\"{0}\"", "password"));
contents.AppendLine();
contents.AppendLine("your_password");
contents.AppendLine(footer);
The best way to send multipart form data in C# is shown in the snippet, here you see that adding different type of content is as easy as adding it to the wrapper multipart content type:
var documentContent = new MultipartFormDataContent();
documentContent.Add(new StringContent("AnalyticsPage.xlsx"), "title");
documentContent.Add(new ByteArrayContent(File.ReadAllBytes("C:\\Users\\awasthi\\Downloads\\AnalyticsPage.xlsx")), "file", "AnalyticsPage.xlsx");
Then just make an api call:
using (var client = new HttpClient(new HttpClientHandler() { UseDefaultCredentials = true, CookieContainer = new CookieContainer() }))
{
response = client.PostAsync(documentAddApi, documentContent).Result;
var responseContent = response.Content.ReadAsStringAsync().Result;
}
Here the expectation is that the rest endpoint you are making a call to is accepting a 'title' field for the file and the byte array of the file named 'file'.
Here is an article on multipart form posts in C# with more detail. This code was eventually merged into RestSharp, which is an excellent library you could use to generate the request.
The format of multipart/form-data requests is outlined here: http://www.w3.org/TR/html401/interact/forms.html#h-17.13.4.2.
Related
I am using salesforce v49.0. I wrote code to upload file(txt file) from my directory to salesforce.
I have created a folder in my salesforce account.
I am getting Bad Request while trying to upload.
Please help to find the solution or suggest any other ways to upload the file.
My Code
string oauthToken = (string)loginResponse["access_token"];
string serviceUrl = (string)loginResponse["instance_url"];
var doc = new sfdcDocument();
doc.Name = "DocumentbyDuke";
doc.FolderId = "05He0000RE00CcKDERTD";
doc.Type = "txt";
doc.Keywords = "123";
doc.Description = "123";
string boundary = "----" + DateTime.Now.Ticks.ToString("x");
var uri = serviceUrl + "/services/data/v49.0/sobjects/Document/";
var req = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(uri);
req.Headers.Add("Authorization: OAuth " + oauthToken);
req.ContentType = "multipart/form-data; boundary=" + boundary;
req.Method = "POST";
var os = req.GetRequestStream();
// Add header for JSON part
string body = "";
body += "\r\n--" + boundary + "\r\n"; ;
body += "Content-Disposition: form-data; name='entity_document'\r\n";
body += "Content-Type: application/json\r\n\r\n";
// Add document object data in JSON
body += JsonConvert.SerializeObject(doc);
// Add header for binary part
body += "\r\n--" + boundary + "\r\n"; ;
body += "Content-Disposition: form-data; name='Body'; filename='1.txt'\r\n";
body += "Content-Type: binary/octet-stream\r\n\r\n";
// Add header data to request
byte[] data = System.Text.Encoding.ASCII.GetBytes(body);
os.Write(data, 0, data.Length);
// Add file to reqeust
FileStream fileStream = new FileStream(#"C:\Users\AprilFile.txt", FileMode.Open, FileAccess.ReadWrite);
byte[] buffer = new byte[4096];
int bytesRead = 0;
while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
{
os.Write(buffer, 0, bytesRead);
}
fileStream.Close();
// Add trailer
byte[] trailer = System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n");
os.Write(trailer, 0, trailer.Length);
os.Close();
// Do the post and get the response.
WebResponse resp;
try
{
resp = req.GetResponse();
}
catch (WebException ex)
{
resp = ex.Response;
}
//if (resp == null) return null;
var sr = new System.IO.StreamReader(resp.GetResponseStream());
08H, as shown in your comment is not the Key Prefix for any type of Folder. It appears to belong to an obscure sObject called CleanBatchErrorLog.
05H corresponds to ContentDistributionView, which is also incorrect.
While there may be other issues, you definitely need to locate the correct folder id to store this document.
I want to add Mailchimp subscriber via Mailchimp api in MVC controller when form register in database.
So I use below code with api key trully wrote.
public void AddContact(string email, string name, string surname, string listKey = "7f0c43ed8f")
{
string apiKey = "apikey comes here";
string url = string.Format("https://us8.api.mailchimp.com/3.0/lists/{0}/members/", listKey);
string data = "{\"email_address\": \"" + email + "\",\"status\": \"subscribed\",\"merge_fields\": {\"FNAME\": \"" + name + "\",\"LNAME\": \"" + surname + "\"}}";
WebRequest myReq = WebRequest.Create(url);
myReq.Method = "POST";
myReq.ContentLength = data.Length;
myReq.ContentType = "application/json; charset=UTF-8";
string usernamePassword = "anystr:" + apiKey;
UTF8Encoding enc = new UTF8Encoding();
myReq.Headers.Add("Authorization", "Basic " + Convert.ToBase64String(enc.GetBytes(usernamePassword)));
using (Stream ds = myReq.GetRequestStream())
{
ds.Write(enc.GetBytes(data), 0, data.Length);
}
WebResponse wr = myReq.GetResponse();
Stream receiveStream = wr.GetResponseStream();
StreamReader reader = new StreamReader(receiveStream, Encoding.UTF8);
string content = reader.ReadToEnd();
}
But this code works sometimes. Sometimes it gives "400 Bad Request" error and I can not find any error or solution about this problem.
I appreciate your help.
Thanks in advance.
this my code for create session and upload file in onedrive
string url = "https://api.onedrive.com/v1.0/drive/root:/" + "Nopbackup" +":/" + "" + fileName +":/upload.createSession" + "";
var result = string.Empty;
WebRequest request = WebRequest.Create(url);
request.Method = "POST";
//request.ContentType = "application/json";
request.ContentType = "contentType";
//request.ac = "application/json";
request.Headers.Add("Authorization", tokenType + " " + accessToken);
request.ContentLength = 0;
//byte[] requestData = Encoding.UTF8.GetBytes(url);
//using (Stream st = request.GetRequestStream())
// st.Write(requestData, 0, requestData.Length);
WebResponse response = request.GetResponse();
using (var streamReader = new StreamReader(response.GetResponseStream()))
result = streamReader.ReadToEnd();
its giving server bad request 400 error
I think the issue is the URL you're POSTing with. It looks like this:
string url = "https://api.onedrive.com/v1.0/drive/root:/" + "Nopbackup" +":/" + "" + fileName +":/upload.createSession" + "";
Which turns out to be
https://api.onedrive.com/v1.0/drive/root:/Nopbackup:/filename:/upload.createSession
You've got the colon syntax a little messed up, and the API doesn't know what to do with that (hence the bad request).
Try building the URL like this instead:
string url = "https://api.onedrive.com/v1.0/drive/root:/" + "Nopbackup" + "/" + fileName +":/upload.createSession";
And I think things will work better for you.
I am trying to upload an image to a web service via POST.
The API documentation says "to upload files via POST, encoded as "multipart/form-data" and include a POST arg named "image" with the image data. Images must be of type PNG, JPG, or GIF."
This is my code:
Bitmap myImage = new Bitmap("myImage.jpg");
byte[] myFileData = (byte[])(new ImageConverter()).ConvertTo(myImage, typeof(byte[]));
string myBoundary = "------------------------" + DateTime.Now.Ticks;
var newLine = Environment.NewLine;
string myContent =
"--" + myBoundary + newLine +
"content-disposition: form-data; name=\"image\"; filename=\"myImage.jpg\"" + newLine +
"Content-Type: image/jpeg" + newLine +
"Content-Transfer-Encoding: binary" + newLine +
newLine +
Encoding.Default.GetString(myFileData) + newLine +
"--" + myBoundary + "--";
try {
using (var httpClient = new HttpClient())
using (var content = new StringContent(myContent, Encoding.Default, "multipart/form-data, boundary=" + myBoundary))
using (var response = await httpClient.PostAsync("http://my_API_URL", content)) {
string responseData = await response.Content.ReadAsStringAsync();
}
}
catch (Exception myExp) { }
This code raises an exception trying to create the StringContent object.
I am ok for any suggestions. The API that I need to use requires Authentication, which typically is solved using a WebClient and this statement:
client.Headers["Authorization"] = "Basic " + Convert.ToBase64String(Encoding.Default.GetBytes("my_API_key:"));
I am OK with using any other form of POST, like WebClient or HttpClient.
Code that finally worked, in case anyone is looking for the same answer:
Bitmap myImage = new Bitmap("myImage.jpg");
byte[] myFileData = (byte[])(new ImageConverter()).ConvertTo(myImage, typeof(byte[]));
string myBoundary = "---------------------------7df3c13714f0ffc";
var newLine = Environment.NewLine;
string myContent =
"--" + myBoundary + newLine +
"Content-Disposition: form-data; name=\"image\"; filename=\"myImage.jpg\"" + newLine +
"Content-Type: image/jpeg" + newLine +
newLine +
Encoding.Default.GetString(myFileData) + newLine +
"--" + myBoundary + "--";
using (var client = new WebClient()) {
try {
client.Headers["Authorization"] = "Basic xxxxxx";
client.Headers["Content-Type"] = "multipart/form-data; boundary=" + myBoundary;
client.UploadString(new Uri(myURL), "POST", myContent);
totalAPICalls++;
}
catch { }
}
Helo,
I want to ask you, if I can send tile notification from one phone to another phone and vice versa using WCF service?
Thanks
To send push to other phone you have to have ChannelURI. There is good article about it
http://msdn.microsoft.com/en-us/library/hh221549.aspx
When you have this adress you have to send special XML data
string textTitle = tbxTitle.Text;
string textSubtitle = tbxSubtitle.Text;
string deviceUri = tbxUri.Text;
string msg =
"<?xml version=\"1.0\" encoding=\"utf-8\"?>" +
"<wp:Notification xmlns:wp=\"WPNotification\">" +
"<wp:Toast>" +
"<wp:Text1>" + textTitle + "</wp:Text1>" +
"<wp:Text2>" + textSubtitle + "</wp:Text2>" +
"</wp:Toast>" +
"</wp:Notification>";
byte[] msgBytes = new UTF8Encoding().GetBytes(msg);
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(channelUri);
request.Method = WebRequestMethods.Http.Post;
request.ContentType = "text/xml";
request.ContentLength = msg.Length;
request.Headers["X-MessageID"] = Guid.NewGuid().ToString();
request.Headers["X-WindowsPhone-Target"] = "toast";
request.Headers["X-NotificationClass"] = "2";
Stream requestStream = request.GetRequestStream();
requestStream.Write(msgBytes, 0, msgBytes.Length);
requestStream.Close();