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c#wcfexceptionfirst-chance-exceptionxmlexception

A first chance exception of type 'System.Xml.XmlException' occurred in System.Xml.dll

When I start my application (it is a client which connect with WCF to a Service) I see in the Output-Window of Visual Studio many lines with

A first chance exception of type 'System.Xml.XmlException' occurred in System.Xml.dll

I have turn on the throw of this Exception and see, that it occures, when the client calls the WCF-Service. The Message of the Exception is:

A name must not beginn with '<' (in german: Ein Name darf nicht mit dem Zeichen '<', hexadezimaler Wert 0x3C, beginnen.)

Should I do something about this? Or is this normal? Can this be a performance issue?

Thanks for your help.

Best Regards, Thomas

Solution

  • This is normal. First chance exception messages indicate exceptions that were thrown and handled.

    The ones you are getting is probably due to missing configuration info or serialization info in your assembly. The aforementioned might not be needed if everything is working fine.