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If I add a web reference from a .NET 1.1 client to a WCF service, the proxy methods generated at the client contain an extra parameter ending with the suffix ‘Specified’ for each service method parameter, e.g.
[OperationContract]
string HelloWorld(string foo, int bar);
results in:
Service1.HelloWorld(string foo, bool fooSpecified, int bar, bool barSpecified);
My service parameters aren’t optional so what are these extra parameters at the client, and how can I get rid of them?
This is due to a difference in the serialization mechanisms used in WCF and ASMX Web Services.
To avoid extra params you must specify XmlSerializerFormat attribute on ServiceContract.
for add read this:
http://msmvps.com/blogs/windsor/archive/2008/05/17/calling-wcf-services-from-net-1-1.aspx