"The process cannot access the file because it is being used by another process" with Images

Scriptworks picture Scriptworks · Nov 11, 2012 · Viewed 49.4k times · Source

I've seen many issues like this that have been solved and the problem was mostly due to streams not being disposed of properly.

My issue is slightly different, here follow a code snippet

 foreach (Images item in ListOfImages)
 {
      newPath = Path.Combine(newPath, item.ImageName + item.ImageExtension);
      File.Create(newPath);

      File.WriteAllBytes(newPath, item.File);
 }

Where Images is a custom struct and item.File is the raw data, byte[].

My issue is that at the line where the WriteAllBytes is called, an exception is thrown. The message reads:

The process cannot access the file because it is being used by another process

Again I have no clue how am I going to somehow close the process.

Answer

Tim Schmelter picture Tim Schmelter · Nov 11, 2012

Since File.Create returns the stream i would dispose it properly:

using(var stream = File.Create(newPath)){}
File.WriteAllBytes(newPath, item.File);

or you can use the stream to write to the file directly:

using (FileStream fs = File.Create(newPath))
{
    fs.Write(item.File, 0, item.File.Length);
}

or, probably the easiest, use File.WriteAllBytes alone:

File.WriteAllBytes(newPath, item.File);

Creates a new file, writes the specified byte array to the file, and then closes the file. If the target file already exists, it is overwritten.