Http测试WebService

            XmlDocument vXmlDoc = new XmlDocument();
            FileStream vStream = new FileStream(@"Soap.xml", FileMode.Open, FileAccess.Read);
            vXmlDoc.Load(vStream);

            string vPostData = vXmlDoc.OuterXml;

            byte[] vPostBytes = System.Text.Encoding.ASCII.GetBytes(vPostData);



            Uri vUri = new Uri(this.txtUri.Text);
            HttpWebRequest vRequest = (HttpWebRequest)HttpWebRequest.Create(vUri);

            vRequest.Method = "POST";
            vRequest.ContentType = "text/xml;charset=utf-8";
            vRequest.ContentLength = vPostBytes.Length;
            vRequest.Headers.Add(string.Format("SOAPAction: \"http://tempuri.org/{0}\"", this.txtMethodName.Text));
            vRequest.Timeout = 5000;

            Stream vRequestStream = vRequest.GetRequestStream();
            vRequestStream.Write(vPostBytes, 0, vPostBytes.Length);

            vRequestStream.Flush();
            vRequestStream.Close();

            HttpWebResponse vResponse = (HttpWebResponse)vRequest.GetResponse();

            Stream vResponseStream = vResponse.GetResponseStream();

            StreamReader vReader = new StreamReader(vResponseStream);

            string vResult = vReader.ReadToEnd();

            vReader.Close();
            vResponseStream.Close();
            vResponse.Close();

            MessageBox.Show(vResult);

Soap.xml

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
    <soap:Body>
        <GetHello xmlns="http://tempuri.org/">
            <pWord>string</pWord>
        </GetHello>
    </soap:Body>
</soap:Envelope>