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POConvert C# function to VB.Net, Lambda problems and best way to convert
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copied!<p>I am trying to convert a block of code from VS2010 C# 4.0 framework to VS2008 VB.NET 3.5 Framework. I am extremely unsure of how to proceed as I am unfamiliar with VB.NET and VS2008 and I am finding the differences between the two environments frustrating. I've gutted most of the irrelvant code from the original C# in hopes of providing a clean example of the problem that a solution can be indicated from.</p> <p>I did try a few code converters but the lambdas tripped them up.</p> <p>I converted the first lambda to a simple <code>For Each</code> construct which seems fine. However the second lambda (passed to to the <code>ThreadPool.QueueUserWorkItem</code> call) is causing me uncertainty. As the lambda is using the <code>taskcount</code> var which is declared outside the lambda body, I am hesitant on the best approach to to make this code friendly to my target environment (VS2008/VB.Net/3.5) and keep the code as similar as possible to the original implementation. I don't wish to explicitly push the <code>taskcount</code> into the <code>WaitCallback</code> unless there is no other way.</p> <pre><code>public void sendAndBlock(List<ISendable> msgs) { int taskCount = msgs.Count; AutoResetEvent fini = new AutoResetEvent(false); msgs.ForEach(m => { ThreadPool.QueueUserWorkItem(nil => { this.send(m); //threadsafe decrement and if we have no tasks left then unblock. if (0 == Interlocked.Decrement(ref taskCount)) { fini.Set();//signal our main thread to proceed } }, m); }); //block our main thread fini.WaitOne(); } </code></pre>

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