I want to POST a Form from action using C#.
<form method=post action=controller.php> .... </form> I have made a form displayed on apsx page.
My question is how we can send the form with POST method through C#. Note : i want to use seperate C# file from aspx pages.
Is it possible to send a form programmatically to controller.php on a button event?? and we receive the values of the form on the action page.
This is the code I use to do HTTP posts from code that isn't related to webpages. Whether it's applicable to you or not, I'm not sure.
public static string HTTP_Post(string url, string data, DataType type = DataType.XML) { byte[] arr = System.Text.Encoding.UTF8.GetBytes(data); return new StreamReader(HTTP_Post_Response(url, arr, type)).ReadToEnd(); } public static string HTTP_Post(string url, FileInfo file, DataType type = DataType.XML) { StreamReader fs = new StreamReader(file.OpenRead()); byte[] arr = System.Text.Encoding.UTF8.GetBytes(fs.ReadToEnd()); fs.Close(); return new StreamReader(HTTP_Post_Response(url, arr, type)).ReadToEnd(); } private static Stream HTTP_Post_Response(string url, byte[] data, DataType type) { HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url); request.Method = "POST"; switch (type) { case DataType.Text: request.ContentType = "text/text"; break; case DataType.XML: request.ContentType = "text/xml"; break; } request.ContentLength = data.Length; Stream dataStream = request.GetRequestStream(); dataStream.Write(data, 0, data.Length); dataStream.Close(); return request.GetResponse().GetResponseStream(); } public enum DataType { Text = 0, XML, } Just call HTTP_Post(url, content) from your code.
url is the url that you want to POST to. That'd probably be /controller.php or http://mywebserver.com/controller.php. content is whatever string you want to post - I assume you have something specific you want to past to controller.php, and that's what you'd put there. The third parameter should be DataType.Text if you're posting straight text, but it doesn't really matter if you aren't checking it.You can try with this code - based on Socket class
IPHostEntry ipHost = Dns.GetHostEntry("....your adress");//Adjust your adress IPAddress ipAddr = ipHost.AddressList[0]; IPEndPoint ipEndPoint = new IPEndPoint(ipAddr, 11000); // Create a TCP socket. Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); // Connect the socket to the remote endpoint. client.Connect(ipEndPoint); // There is a text file test.txt located in the root directory. string fileName = "C:\\YourAspx.aspx"; // Send file fileName to remote device Console.WriteLine("Sending {0} to the host.", fileName); client.SendFile(fileName); // Release the socket. client.Shutdown(SocketShutdown.Both); client.Close(); In PHP you post the form to different page for processing the user input.
However, in asp.net form Posts back to itself, and you do the form processing inside event handler of submit button in the code behind file.
Lets say in Default.aspx you did not specify action attribute,
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication3.Default" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> </head> <body> <form id="form1" runat="server"> <div> <asp:TextBox runat="server" ID="yourTextBox"/> <asp:Button ID="yourButton" Text="Submit" runat="server" OnClick="yourButton_Click"/> </div> </form> </body> </html> When you view page source, action is populated as same page name.
Code Behind
public partial class Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { //IsPostBack false when page loads first time if (!IsPostBack) //same as $_POST['Submit'] in PHP { //use this if block to initialize your controls values yourTextBox.Text = "Please enter value"; } } protected void yourButton_Click(object sender, EventArgs e) { //obtain control values //do form prcessing string userInput = yourTextBox.Text; //write your business logic here, //redirect to next page Response.Redirect("action.aspx"); } } For more detail on how to pass data among pages, have a look at this msdn link -
http://msdn.microsoft.com/en-us/library/6c3yckfw(v=vs.100).aspx
I hope this helps you.
Response.Redirect doesn't meet any form processing requirement. What does adding runat="server" have to do with html form processing? Perhaps the question itself is confusing everyone.