Thread safety with Dictionary in .Net

Question

I have this function:

static Dictionary KeyValueDictionary = new Dictionary();
static void IncreaseValue(int keyId, int adj         


        

Answer 1

The .NET library has a thread safe dictionary, the ConcurrentDictionary http://msdn.microsoft.com/en-us/library/dd287191.aspx

Updated: I didn't exactly answer the question, so here's updated with more answery to exact question posed. As per the MSDN:http://msdn.microsoft.com/en-us/library/xfhwa508.aspx

A Dictionary can support multiple readers concurrently, as long as the collection is not modified. Even so, enumerating through a collection is intrinsically not a thread-safe procedure. In the rare case where an enumeration contends with write accesses, the collection must be locked during the entire enumeration. To allow the collection to be accessed by multiple threads for reading and writing, you must implement your own synchronization.

For a thread-safe alternative, see ConcurrentDictionary.

Public static (Shared in Visual Basic) members of this type are thread safe.