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POproblem in scheduler code
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4246176
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4336191
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2010-11-22T14:02:31.740
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2010-12-02T14:44:45.067
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2010-12-02T14:30:00.373
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The following code -scheduler.vb- simulate a Windows Service Using ASP.NET to Run Scheduled Jobs. More info here: <a href="http://beckelman.net/post/2008/09/20/Simulate-a-Windows-Service-Using-ASPNET-to-Run-Scheduled-Jobs.aspx" rel="nofollow">http://beckelman.net/post/2008/09/20/Simulate-a-Windows-Service-Using-ASPNET-to-Run-Scheduled-Jobs.aspx</a> Howerver when I try to run the class in my global.asax i get the following error (highlighted on RunScheduledTasks): "Expression does not produce a value", why?? Thanks. global.asax <pre><code> Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs) Scheduler.Run("test", 1, RunScheduledTasks) End Sub Public Sub RunScheduledTasks() 'Do stuff here end Sub </code></pre> scheduler.vb <pre><code> Public Class Scheduler Private Class CacheItem Public Name As String Public Callback As Callback Public Cache As Cache Public LastRun As DateTime End Class Public Delegate Sub Callback() Private Shared _numberOfMinutes As Integer = 1 Public Shared Sub Run(ByVal name As String, ByVal minutes As Integer, ByVal callbackMethod As Callback) _numberOfMinutes = minutes Dim cache As New CacheItem() cache.Name = name cache.Callback = callbackMethod cache.Cache = HttpRuntime.Cache cache.LastRun = DateTime.Now AddCacheObject(cache) End Sub Private Shared Sub AddCacheObject(ByVal cache_1 As CacheItem) If cache_1.Cache(cache_1.Name) Is Nothing Then cache_1.Cache.Add(cache_1.Name, cache_1, Nothing, DateTime.Now.AddMinutes(_numberOfMinutes), Cache.NoSlidingExpiration, CacheItemPriority.NotRemovable, _ AddressOf CacheCallback) End If End Sub Private Shared Sub CacheCallback(ByVal key As String, ByVal value As Object, ByVal reason As CacheItemRemovedReason) Dim obj_cache As CacheItem = DirectCast(value, CacheItem) If obj_cache.LastRun < DateTime.Now Then If obj_cache.Callback IsNot Nothing Then obj_cache.Callback.Invoke() End If obj_cache.LastRun = DateTime.Now End If AddCacheObject(obj_cache) End Sub End Class </code></pre>
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<.net><scheduler>
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problem in scheduler code
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