I use this code to send an image from desktop application to a php file on server:
// Create a request using a URL that can receive a post.
WebRequest request = WebRequest.Create("http://example.com/img.php");
// Set the Method property of the request to POST.
request.Method = "POST";
// Create POST data and convert it to a byte array.
string postData = "hello";
byte[] byteArray = ImageToByte(image);//Encoding.UTF8.GetBytes (postData);
byteArray = Encoding.UTF8.GetBytes(postData);
// Set the ContentType property of the WebRequest.
request.ContentType = "application/x-www-form-urlencoded";
// Set the ContentLength property of the WebRequest.
request.ContentLength = byteArray.Length;
// Get the request stream.
Stream dataStream = request.GetRequestStream ();
// Write the data to the request stream.
dataStream.Write (byteArray, 0, byteArray.Length);
// Close the Stream object.
dataStream.Close ();
// Get the response.
WebResponse response = request.GetResponse ();
// Display the status.
Console.WriteLine (((HttpWebResponse)response).StatusDescription);
// Get the stream containing content returned by the server.
dataStream = response.GetResponseStream ();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader (dataStream);
// Read the content.
string responseFromServer = reader.ReadToEnd ();
// Display the content.
Console.WriteLine (responseFromServer);
// Clean up the streams.
reader.Close ();
dataStream.Close ();
response.Close ();
What function should I use in php to receive the image file?
Since you're not forming standartized post, you'll need to read directly from php input.
file_get_contents("php://input");
Provided your C# code produces a valid post request, you should be able to fetch it from the global $_POST array in PHP.
Related
I am working on a site that sends data to another website and it has a landing page with a URL by using. The issue is I do not want to do the REdirect I just want it to send data to that page and continue with the code under it.
The other Site doesn't have API's how can I do this?
I have been looking at examples all of them are referring to API url's with log-in authentication but this URL does not require a log in just send in the data with the URL(www.example.come/submit?Firstname=Firstname;LastName=LastName;)
Something like that without actually redirecting the page to that site.
You can use the WebRequest
// Create a request using a URL that can receive a post.
WebRequest request = WebRequest.Create ("http://www.contoso.com/PostAccepter.aspx ");
// Set the Method property of the request to POST.
request.Method = "POST";
// Create POST data and convert it to a byte array.
string postData = "This is a test that posts this string to a Web server.";
byte[] byteArray = Encoding.UTF8.GetBytes (postData);
// Set the ContentType property of the WebRequest.
request.ContentType = "application/x-www-form-urlencoded";
// Set the ContentLength property of the WebRequest.
request.ContentLength = byteArray.Length;
// Get the request stream.
Stream dataStream = request.GetRequestStream ();
// Write the data to the request stream.
dataStream.Write (byteArray, 0, byteArray.Length);
// Close the Stream object.
dataStream.Close ();
// Get the response.
WebResponse response = request.GetResponse ();
// Display the status.
Console.WriteLine (((HttpWebResponse)response).StatusDescription);
// Get the stream containing content returned by the server.
dataStream = response.GetResponseStream ();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader (dataStream);
// Read the content.
string responseFromServer = reader.ReadToEnd ();
// Display the content.
Console.WriteLine (responseFromServer);
// Clean up the streams.
reader.Close ();
dataStream.Close ();
response.Close ();
You can read more about this Here
I am trying to use an API and I don't have any problems with GET and POST but PUT isn't working. I tried with a lot of different examples and finally by chance I discovered that waiting more that 5 seconds (with 5000ms it is not working and with 5100ms it does) it starts working properly. But why is that happening? And how can I avoid this? 5 seconds for each registry update is to much waiting and I really don't understand why POST works well without waiting and PUT needs 5 seconds to work.
Here I put the method that I am using with the Thread.Sleep(5100). As I said without this line when I make WebResponse response = request.GetResponse(); gives me an error.
public void call(string url, object jsonObj)
{
try
{
// Create a request using a URL that can receive a post.
HttpWebRequest request = (HttpWebRequest) HttpWebRequest.Create(urlSplio);
// Create POST data and convert it to a byte array.
request.Method = "PUT";
// Set the ContentType property of the WebRequest.
request.ContentType = "application/json";
request.Credentials = new NetworkCredential(WebConfigurationManager.AppSettings["User"], "WebConfigurationManager.AppSettings["Key"]");
string json = JsonConvert.SerializeObject(jsonObj);
byte[] byteArray = Encoding.UTF8.GetBytes(json);
// Set the ContentLength property of the WebRequest.
request.ContentLength = byteArray.Length;
// Get the request stream.
Stream dataStream = request.GetRequestStream();
// Write the data to the request stream.
dataStream.Write(byteArray, 0, byteArray.Length);
// Close the Stream object.
dataStream.Close();
Thread.Sleep(5100);
// Get the response.
WebResponse response = request.GetResponse();
// Display the status.
Console.WriteLine(((HttpWebResponse)response).StatusDescription);
// Get the stream containing content returned by the server.
dataStream = response.GetResponseStream();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader(dataStream);
// Read the content.
string responseFromServer = reader.ReadToEnd();
// Display the content.
Console.WriteLine(responseFromServer);
// Clean up the streams.
dataStream.Close();
response.Close();
}
catch (Exception ex)
{
}
}
I think you might want to rewrite the response stream code
Take a look at this walkthrough on MS MS walkthrough
private byte[] GetURLContents(string url)
{
// The downloaded resource ends up in the variable named content.
var content = new MemoryStream();
// Initialize an HttpWebRequest for the current URL.
var webReq = (HttpWebRequest)WebRequest.Create(url);
// Send the request to the Internet resource and wait for
// the response.
// Note: you can't use HttpWebRequest.GetResponse in a Windows Store app.
using (WebResponse response = webReq.GetResponse())
{
// Get the data stream that is associated with the specified URL.
using (Stream responseStream = response.GetResponseStream())
{
// Read the bytes in responseStream and copy them to content.
responseStream.CopyTo(content);
}
}
// Return the result as a byte array.
return content.ToArray();
}
Iam developing a cross platform android app in Xamarin. I want to send a request to register my device. Iam sending my DeviceId, DeviceName and EncodedAccountName i.e my email id.
But I dont get any response. I have tested the request on Postman and get a proper response.
Here is my code:
StringBuilder registerContent = new StringBuilder();
registerContent.Append("DeviceId=").Append(deviceId).Append("&");
registerContent.Append("Name=").Append(deviceName).Append("&");
registerContent.Append("EncodedAccountName=").Append(username);
WebRequest request = WebRequest.Create(EndPoints.RegisterDeviceEndPoint);
// Set the Method property of the request to POST.
request.Method = "POST";
// Create POST data and convert it to a byte array.
string postData = registerContent.ToString();
byte[] byteArray = Encoding.UTF8.GetBytes(postData);
// Set the ContentType property of the WebRequest.
request.ContentType= "application/x-www-form-urlencoded";
// Set the ContentLength property of the WebRequest.
request.ContentLength = byteArray.Length;
// Get the request stream.
Stream dataStream = request.GetRequestStream();
// Write the data to the request stream.
dataStream.Write(byteArray, 0, byteArray.Length);
// Close the Stream object.
dataStream.Close();
// Get the response.
WebResponse response = request.GetResponse();// Dont get any response here
// Display the status.
System.Console.WriteLine(((HttpWebResponse)response).StatusDescription);
// Get the stream containing content returned by the server.
dataStream = response.GetResponseStream();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader(dataStream);
// Read the content.
string responseFromServer = reader.ReadToEnd();
// Display the content.
System.Console.WriteLine(responseFromServer);
// Clean up the streams.
reader.Close();
dataStream.Close();
response.Close();
return response.ToString();
Any ideas on what might me going wrong?
Thanks
This is how I notify my Web API and wait for a string response:
string myParameters = "?firstParam=" + someParam1 + "&secondParam=" + someParam2;
string url = someHTTPAddress + myParameters;
stringResponseFromWebAPI = (new WebClient()).DownloadString(url);
I want to programatically send data to a website and then programatically click submit button. This is the HTML code I'm trying to fill up:
<textarea id="rpslBox:postRpsl:rpslObject" name="rpslBox:postRpsl:rpslObject" class="ripe-input-field ui-corner-all" rows="18" style="width:500px;"></textarea>
I'm using this C# code:
WebRequest request = WebRequest.Create("https://apps.db.ripe.net/syncupdates/simple-rpsl.html ");
// Set the Method property of the request to POST.
request.Method = "POST";
string textarea = "text";
// Create POST data and convert it to a byte array.
string postData = string.Format("rpslBox:postRpsl:rpslObject{0}", textarea);
When I run this code it returns the HTML code of the page without sending this text. How can I send this text? Thanks for your help!
I can't test if this works, but from what I understand from msdn, is that following code will convert your postdata to bytedata and submit that to the webserver:
byte[] byteArray = Encoding.UTF8.GetBytes (postData);
// Set the ContentType property of the WebRequest.
request.ContentType = "application/x-www-form-urlencoded";
// Set the ContentLength property of the WebRequest.
request.ContentLength = byteArray.Length;
// Get the request stream.
Stream dataStream = request.GetRequestStream ();
// Write the data to the request stream.
dataStream.Write (byteArray, 0, byteArray.Length);
// Close the Stream object.
dataStream.Close ();
And that afterwards following code can be used to read the new response from the webserver:
// Get the response.
WebResponse response = request.GetResponse ();
// Display the status.
Console.WriteLine (((HttpWebResponse)response).StatusDescription);
// Get the stream containing content returned by the server.
dataStream = response.GetResponseStream ();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader (dataStream);
// Read the content.
string responseFromServer = reader.ReadToEnd ();
// Display the content.
Console.WriteLine (responseFromServer);
// Clean up the streams.
reader.Close ();
dataStream.Close ();
response.Close ();
i am trying to post a data to a website and get the response back from the server. This is the code that i am using:
// Create a request using a URL that can receive a post.
WebRequest request = WebRequest.Create("http://www.indianrail.gov.in/train_Schedule.html");
((HttpWebRequest)request).UserAgent = "Mozilla/5.0 (Windows NT 6.1; rv:9.0) Gecko/20100101 Firefox/9.0";
// Set the Method property of the request to POST.
request.Method = "POST";
// Create POST data and convert it to a byte array.
string postData = lccp_trnname.Text;
byte[] byteArray = Encoding.UTF8.GetBytes(postData);
// Set the ContentType property of the WebRequest.
request.ContentType = "application/x-www-form-urlencoded";
// Set the ContentLength property of the WebRequest.
request.ContentLength = byteArray.Length;
// Get the request stream.
Stream dataStream = request.GetRequestStream();
// Write the data to the request stream.
dataStream.Write(byteArray, 0, byteArray.Length);
// Close the Stream object.
dataStream.Close();
// Get the response.
try
{
WebResponse response = request.GetResponse();
// Display the status.
Response.Write(((HttpWebResponse)response).StatusDescription);
// Get the stream containing content returned by the server.
dataStream = response.GetResponseStream();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader(dataStream);
// Read the content.
string responseFromServer = reader.ReadToEnd();
// Display the content.
Response.Write(responseFromServer);
// Clean up the streams.
reader.Close();
dataStream.Close();
response.Close();
}
catch (WebException ee)
{
Label1.Text = ee.Message;
}
instead of getting the reply back from the server, i am getting redirected to the same webpage in which i am posting the data. Plz help me if anyone has got any idea as what has gone wrong with my code. i've been trying since long back but all efforts went in vain. So plz help
You must post data to http://www.indianrail.gov.in/cgi_bin/inet_trnnum_cgi.cgi instead of http://www.indianrail.gov.in/train_Schedule.html
UPDATE:
The second problem is that you are not sending name of "lccp_trnname" parameter in data. This will make it work:
string postData = "lccp_trnname=" + lccp_trnname.Text;