Hi
Im trying to make an app that uses threading, I want to write to a file in a
loop.
How can i ensure that only one thread writes to the file a the time???
Im accessing the fil with:
Dim xFile As StreamWriter
xFile = New StreamWriter("C :\threadtest.tx t", True, System.Text.Enc oding.UTF8)
xFile.Write(Now )
xFile.Flush()
xFile.Close()
The error:
An unhandled exception of type 'System.IO.IOEx ception' occurred in
mscorlib.dll
Additional information: The process cannot access the file
"C:\threadtest. txt" because it is being used by another process. 2 2850
In article <DD************ *************** *******@microso ft.com>, He****@discussi ons.microsoft.c om says... Hi
Im trying to make an app that uses threading, I want to write to a file in a loop.
How can i ensure that only one thread writes to the file a the time???
Im accessing the fil with:
Dim xFile As StreamWriter xFile = New StreamWriter("C :\threadtest.tx t", True, System.Text.Enc oding.UTF8) xFile.Write(Now ) xFile.Flush() xFile.Close()
The error: An unhandled exception of type 'System.IO.IOEx ception' occurred in mscorlib.dll Additional information: The process cannot access the file "C:\threadtest. txt" because it is being used by another process.
In C# there is lock() keyword. I do not know the equivalent in VB.Net,
but actually lock is just a syntax sugar for Monitor.Enter and
Monitor.Exit. The real code is something like:
monitor.Enter() ;
try
{
do my job
}
finally
{
monitor.Exit
}
I know that in VB.New there is a similar construct for
try/catch/finally, so if there is not a lock equivalent, you can do it
with something like that.
Sunny
Thanks Sunny,,
It's pretty much the same in vb,, i will now try this...
"Sunny" wrote: In article <DD************ *************** *******@microso ft.com>, He****@discussi ons.microsoft.c om says... Hi
Im trying to make an app that uses threading, I want to write to a file in a loop.
How can i ensure that only one thread writes to the file a the time???
Im accessing the fil with:
Dim xFile As StreamWriter xFile = New StreamWriter("C :\threadtest.tx t", True, System.Text.Enc oding.UTF8) xFile.Write(Now ) xFile.Flush() xFile.Close()
The error: An unhandled exception of type 'System.IO.IOEx ception' occurred in mscorlib.dll Additional information: The process cannot access the file "C:\threadtest. txt" because it is being used by another process.
In C# there is lock() keyword. I do not know the equivalent in VB.Net, but actually lock is just a syntax sugar for Monitor.Enter and Monitor.Exit. The real code is something like:
monitor.Enter() ; try { do my job } finally { monitor.Exit }
I know that in VB.New there is a similar construct for try/catch/finally, so if there is not a lock equivalent, you can do it with something like that.
Sunny This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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Im trying to make an app that uses threading, I want to write to a file in a
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How can i ensure that only one thread writes to the file a the time???
Im accessing the fil with:
Dim xFile As StreamWriter
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