The stream does not support concurrent I/O ReadWrite operations

[mbyamukama]

I am writing a multithreaded application. A download manager to be precise. When downloading one file, everything is quite fine. The thread starts, downloads the file and terminates as expected. When i start another download thread, however, when the first is still running, i get the error above 9in the subject). The problem is on this line of code which is meant to create a new filestream and write the retrieved data to the stream. strLocal = new FileStream(Application.StartupPath+"\\"+SaveAsTextBox.Text,FileMode.Create, FileAccess.Write,FileShare.ReadWrite); The download method is called Download(), is void and does not take any arguments. A thread is started using DownloadThread[j] = new Thread(new ThreadStart(Download)); DownloadThread[j].Start(); where j has a value incremented per click, so as to start a new thread each time. What i do not understand is that the exception seems to suggest that 2 write operations are requesting to be handled by the same stream, yet it is actually a different stream because the user changes the SaveAsTextBox.Text on every new download. Any answers?

BHM

[Christian Graus]

Sounds like you're trying to write to the same file on two threads ? That plainly won't work.

Christian Graus Driven to the arms of OSX by Vista. Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

[Lost User]

What is the actual value of "SaveAsTextBox.Text" in each of the threads?

[mbyamukama]

for each of the threads, it is different. say AAA.avi for one and BBB.avi for another. The two are meant to be written to the same forlder nonetheless.

BHM

[Lost User]

Maximus Byamukama wrote:

say AAA.avi for one and BBB.avi for another. The two are meant to be written to the same forlder nonetheless.

Yes, but what are the actual values? Have you checked the filenames in both threads at execution time?