InvalidMessageContractException Class
Represents a message contract that is not valid.
Assembly: System.ServiceModel (in System.ServiceModel.dll)
The InvalidMessageContractException is thrown when custom attribute usage results in the generation of an invalid service description. For example, if a System.ServiceModel.MessageContractAttribute type has multiple parts with the same name, or a method has multiple parameters with the same name.
The following code example shows a contract and service that throws an InvalidMessageContractException that says operand appears more than once in the message.
[ServiceContract(Namespace = "http://contoso.com/IMath")]
public interface IMath
{
[OperationContract]
void Add(AddMessage a);
}
[MessageContract]
public class AddMessage
{
[MessageBodyMember(Name="operand")]
public int a;
[MessageBodyMember(Name = "operand")]
public int b;
}
System.Exception
System.SystemException
System.ServiceModel.InvalidMessageContractException
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.