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Catching COM-Exceptions from ArcObjects

to catch the COM-Exception in own applications thrown from the underlaying ArcObjects-Library could be done with:

catch (COMException ComEx)

{

    Console.WriteLine(string.Format("MyCode errored: {0}, Error Code: {1}",

        ComEx.Message, ComEx.ErrorCode));

}

the special error constants could be found under:

ArcObjects Library Reference (GeoDatabase) - fdoError Constants

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posted on Tuesday, October 20, 2009 2:36 PM

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# re: Catching COM-Exceptions from ArcObjects 12/7/2009 5:48 AM Martijn Coppoolse

That's right. I even add the error constant's name, if applicable, like this:

m_Message &= " (" & ComEx.Source
If System.Enum.IsDefined(GetType(fdoError), ComEx.ErrorCode) Then
m_Message &= "; " & System.Enum.GetName(GetType(fdoError), ComEx.ErrorCode)
End If
m_Message &= ")"

(The fdoError enum is located in the ESRI.ArcGIS.Geodatabase namespace.)