1）：在Salesforce中如何配置，向外公布此Service，请看如下链接：

   http://www.shellblack.com/marketing/web-to-lead/ 

 

2）：如何在Asp.Net中调用此Service去创建对应的Lead，请看如下代码：

try            {                StringBuilder data = new StringBuilder();                data.Append("oid=[youroid]");                data.Append("&first_name=" + Server.UrlEncode(this.txtFirstName.Text));                data.Append("&last_name=" + Server.UrlEncode(this.txtLastName.Text));                data.Append("&email=" + Server.UrlEncode(this.txtEmail.Text));                string url = "https://test.salesforce.com/servlet/servlet.WebToLead?encoding=UTF-8";                HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);                req.Method = "POST";                req.ContentType = "application/x-www-form-urlencoded";                byte[] buffer = Encoding.UTF8.GetBytes(data.ToString());                req.ContentLength = buffer.Length;                using (Stream reqst = req.GetRequestStream())                {                    reqst.Write(buffer, 0, buffer.Length);                }                WebResponse response = req.GetResponse();            }            catch (Exception ex)            {            }

 

更多信息也可以看如下链接： https://success.salesforce.com/ideaView?id=08730000000Y07QAAS 

 

3）： http://www.chronoengine.com/faqs/61-cfv4/cfv4-tutorials/4112-how-can-i-send-form-data-to-salesforce.html