An object representing the parameter at the specified index.
The SoapMessage.GetInParameterValue(int) property is only accessible when in parameters are available. ASP.NET throws InvalidOperationException when accessing the SoapMessage.GetInParameterValue(int) property if in parameters are not available.
In a System.Web.Services.Protocols.SoapClientMessage the in parameters are available in the SoapMessageStage.BeforeSerialize System.Web.Services.Protocols.SoapMessageStage. In a System.Web.Services.Protocols.SoapServerMessage the in parameters are available in the SoapMessageStage.AfterDeserialize System.Web.Services.Protocols.SoapMessageStage.