Customize SOAP request send from Windows 8 application - web-services

Question

I am consuming a WSDL in a Windows 8 app. I need to customize the SOAP request like
New SOAP Request:
</ns0:Header>
<ns0:Body>
<ns0:Request xmlns:ns0="http://www.ABC.co.il/2004/01/RetrieveEntityDetails/EntityDetailsRequest">
</ns0:Request></ns0:Body></ns0:Envelope>
Current SOAP Request:
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
<s:Header>
</s:Header>
<s:Body>
<RetrieveEntityDetailsXPOP_XmlRequest xmlns="http://tempuri.org/">
<RetrieveEntityDetailsXPOP_Xml xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
<requestDoc>
</requestDoc>
</RetrieveEntityDetailsXPOP_Xml>
</RetrieveEntityDetailsXPOP_XmlRequest>
</s:Body>
</s:Envelope>
How will I change the namespace and set a request tag inside the body tag.
Code:
Client = new EAI_RetrieveEntityDetailsXP_ServiceSoapClient();
Client.RetrieveEntityDetailsXPOP_XmlCompleted += Client_RetrieveEntityDetailsXPOP_XmlCompleted;
XElement requestData = GetRequestData();
using (new OperationContextScope(Client.InnerChannel))
{
// Create a custom soap header
var msgHeader = MessageHeader.CreateHeader("myCustomHeader", string.Empty, "myValue");
// Add the header into request message
OperationContext.Current.OutgoingMessageHeaders.Add(msgHeader);
Client.RetrieveEntityDetailsXPOP_XmlAsync(requestData);
}

Answer 1

I have actually used HttpCleint to call this service by using following code. Using this we can generate the SOAP request as desired.
string soapString = ConstructSoapRequest();
using (var client = new HttpClient())
{
client.DefaultRequestHeaders.Add("SOAPAction", SOAPActionUri);
var content = new StringContent(soapString, Encoding.UTF8, "text/xml");
using (var response = await client.PostAsync(Uri, content))
{
var soapResponse = await response.Content.ReadAsStringAsync();
return soapResponse;
}
}
private string ConstructSoapRequest()
{
return String.Format(#"<ns0:Envelope xmlns:ns0='http://www.cellcom.co.il/2004/01/std-headers'>
<ns0:Header>
</ns0:Header>
<ns0:Body>
<ns0:Request xmlns:ns0='http://www.cellcom.co.il/2004/01/RetrieveEntityDetails/EntityDetailsRequest'>
</ns0:Request></ns0:Body></ns0:Envelope>", 100);
}