An interesting problem ate up an hour and a half of my life yesterday morning. It was all to do with a WCF service.
The parameter that I was carefully formulating on one end of the wire and passing to my service proxy was not being received by my service at the other end - instead it was getting a null value. It worked the day before - why had it stopped working overnight?
After much head-scratching, I thought of checking the history of our Server project in the Source code repository. That gave me the clue I needed. In the file containing the interface which defines the service's contract, I noticed that the name of the parameter on the method in question had been changed.
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