C# file read/write fileshare doesn't appear to work

Question

My question is based off of inheriting a great deal of legacy code that I can\'t do very much about. Basically, I have a device that will produce a block of data. A librar

Answer 1

I haven't had time to test this but I think you may need to call the Flush method of the BinaryWriter

FileStream theFS = new FileStream(this.ScannerRawFileName, 
  FileMode.OpenOrCreate, FileAccess.Write, FileShare.Read);
//note that I need to be able to read this elsewhere...
BinaryWriter theBinaryWriter = new BinaryWriter(theFS);
int y, x;
for (y = 0; y < imheight; y++){
    ushort[] theData= new ushort[imwidth];
    for(x = 0; x < imwidth;x++){
       theData[x] = (ushort)(2*y+4*x);
    }
    byte[] theNewArray = new byte[imwidth * 2];
    Buffer.BlockCopy(theImage, 0, theNewArray, 0, imwidth * 2);
    theBinaryWriter.Write(theNewArray);
    Thread.Sleep(mScanThreadWait); //sleep for 50 milliseconds
    Progress = (float)(y-1 >= 0 ? y-1 : 0) / (float)imheight;
    theBinaryWriter.Flush();
}
theFS.Close();

Sorry I haven't had time to test this. I ran into an issue with a file I was creating that was similar to this (although not exact) and a missing "Flush" was the culprit.