Gets a value that indicates whether Web method parameter values are serialized to the out-going HTTP request body.
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The MimeParameterWriter.UsesWriteRequest property determines whether the MimeParameterWriter.WriteRequest(System.IO.Stream, Object[]) method is invoked.
The System.Web.Services.Protocols.MimeParameterWriter class's implementation of MimeParameterWriter.UsesWriteRequest returns a value of false. The only derived class that overrides MimeParameterWriter.UsesWriteRequest is System.Web.Services.Protocols.HtmlFormParameterWriter, whose implementation returns a value of true.