Binary formatter error

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Im trying to read UINT32 numbers from binary file:

C#

try
{
   binaryStreem = new FileStream(filename, FileMode.Open, FileAccess.ReadWrite, FileShare.None);
   binaryStreem.Seek(0, 0);
   FPGATimer = (UInt32)binformater.Deserialize(binaryStreem);
   TraceParameter = (UInt32)binformater.Deserialize(binaryStreem);
   TraceLocation = (UInt32)binformater.Deserialize(binaryStreem);
   binaryStreem.Close();
}
catch (System.Exception ex)
{
   MessageBox.Show(ex.Message);
}

I get an exception when this line executes:

FPGATimer = (UInt32)binformater.Deserialize(binaryStreem);

The exception is:

{"The input stream is not a valid binary format. The starting contents (in bytes) are: 14-00-00-00-00-00-00-00-00-00-00-00-14-00-00-00-00 ..."}

What might be the probem?

Thanks.

Posted 8-Dec-12 23:00pm

columbos14927

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[no name] 9-Dec-12 6:07am

If I'm not mistaken, you're re-writing it..

columbos14927 9-Dec-12 6:11am

The binary file generated by other application and im trying to read it.

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OriginalGriff · Answer 1 · 2012-12-08T23:39:00

Your file was not written with a BinaryFormatter - so you can't read it back with one.
A quick look at the data shown in your error message would indicate that it is raw binary data, possibly the 32 bit integers 20, 0, 0, 20
A binary formatter output file looks more like this:

0001000000FFFFFFFF01000000000000
0004010000000C53797374656D2E496E
74333201000000076D5F76616C756500
08140000000B0001000000FFFFFFFF01
0000000000000004010000000C537973
74656D2E496E74333201000000076D5F
76616C75650008140000000B

That, by the way, is for the two integer values "20" and "20" - but the binary formatter adds the class names and related info to it.

You either need to look at the data writer, or modify your code to read raw data - if you know what the content is supposed to be, that would help.