This tutorial will show you how you can submit form using WebRequest object in ASP.Net CSharp / C#.
Firstly, you will need to import the following namespaces.
//required .net objects using System.Net; using System.IO; using System.Collections;
This method will submit form data using WebRequest object.
//A Sample void function to send form data public void SubmitFormData() { // Create web request object WebRequest objWebRequest; // Set url properties string url = "http://localhost/sampleform/response.aspx"; objWebRequest = WebRequest.Create(url); objWebRequest.Method = "POST"; // add sample form data ArrayList queryList = new ArrayList(); queryList.Add(string.Format("{0}={1}", "value1","text1")); queryList.Add(string.Format("{0}={1}", "value2","text2")); // Set the encoding type objWebRequest.ContentType="application/x-www-form-urlencoded"; string Parameters = String.Join("&",(String[]) queryList.ToArray(typeof(string))); objWebRequest.ContentLength = Parameters.Length; // Write stream StreamWriter sw = new StreamWriter(objWebRequest.GetRequestStream()); sw.Write(Parameters); sw.Close(); //we get back the response after submission HttpWebResponse objHttpWebResponse; objHttpWebResponse = (HttpWebResponse)objWebRequest.GetResponse(); StreamReader sr = new StreamReader(objHttpWebResponse.GetResponseStream()); //we can print this out to see the response result //SEE BELOW RESPONSE.ASPX on HOW TO READ THE FORM DATA Response.Write(sr.ReadToEnd()); }
This is the response page that will grab the submitted data form.
//response.aspx protected void Page_Load(object sender, EventArgs e){ string value1 = ""; string value2 = ""; string strPost = ""; //Loop the form data foreach (string strName in Request.Params) { string strValue = Request.Form[strName]; //Request.Params(strName) switch (strName) { case "value1": value1 = strValue; break; case "value2": value2 = strValue; break; } //reconstruct post for postback validation strPost += string.Format("&{0}={1}", strName, Server.HtmlDecode(strValue)); } //You can do anything you want with the value1 and value2 //ex: we return string OK to client Response.Write("OK"); }