The System.Text.Encoding used to make the client request to the XML Web service.
a System.Text.Encoding
The WebClientProtocol.RequestEncoding determines the encoding for the request message. The System.Net.WebRequest.ContentType of the request will be annotated with the encoding value.
Classes deriving from System.Web.Services.Protocols.WebClientProtocol support a particular protocol, such as System.Web.Services.Protocols.SoapHttpClientProtocol does for SOAP, set this property to conform to encoding requirements for the specific protocol. For example, the System.Web.Services.Protocols.SoapHttpClientProtocol sets the default encoding to UTF-8.