public ResourceUser()
{
handle = APIFunctionSimulator.GetResource();
if (handle.ToInt32() == 0)
{
throw new ApplicationException();
}
}
public void UseResource()
{
if (handle.ToInt32() == 0)
{
throw new ObjectDisposedException("handle used in UseResource class after object disposed");
}
string result = APIFunctionSimulator.UseResource(handle);
Console.WriteLine("In ResourceUser.UseResource, result is :" + result);
}
public void Dispose()
{
lock (this)
{
if (handle.ToInt32() != 0)
{
APIFunctionSimulator.ReleaseResource(handle);
handle = (IntPtr)0;
GC.SuppressFinalize(this);
}
}
}
static void UseUnmanagedResource()
{
IntPtr handle = APIFunctionSimulator.GetResource();
try
{
string result = APIFunctionSimulator.UseResource(handle);
Console.WriteLine("In EntryPoint.UseUnmanagedResource, result is :" + result);
}
catch (Exception e)
{
Console.WriteLine("Exception in UseUnmanagedResource: " + e.Message);
}
finally
{
if (handle.ToInt32() != 0)
{
APIFunctionSimulator.ReleaseResource(handle);
}
}
}