CODEWITHSUNDEEP
c#.netxmlserializationdatacontractserializer
al__gol
al__gol

Reputation: 99

Serialize Error during save file using DataContractSerialize

i use this code for serialize needed objects (use DataContractSerialier)

try
{
 using (var stream = File.OpenWrite(filePath))
 {
  var dcs = new DataContractSerializer(typeof(T));
  dcs.WriteObject(stream, obj);
 }
}
catch (Exception ex)
{
 throw new Exception("Error during write object to xml file", ex);
}

i don't understand, but sometimes this method append to end of xml-file some additional symbols. for example :"eInfo>" ( when i deleted 'eInfo>' deserialization works good). i found this when do high load testing (call this method 12000 times without stoping). maybe i can checking that file was saved correctly (try to deserialize saved file), but i think that it bad idea, because we need to run deserialize procees any time when save xml-file.

Upvotes: 2

Views: 184

Answers (1)

Marc Gravell
Marc Gravell

Reputation: 1063964

That is because File.OpenWrite does not truncate the existing data. You are over-writing a file with less data. The garbage at the end is whatever was left over from the original file. I suggest you use File.Create (which is actually create or overwrite-with-truncate), or explicitly specify truncate, or call .SetLength(0) before writing.

Upvotes: 3

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