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Chart doesn't render occasionally RRS feed

  • Question

  • Any help is greatly appreciated:

    Usually the charts on a webpage render just fine. However, sometimes they don't work. It shows a blank (missing) image where the chart should be. If I refresh the page (sometime requires refreshing twice) then the chart does appear.

    It's hard to debug because it's occasional. 

    ASP .Net 4.5, IIS 8.5 on Windows 8.1

    using image (.png) file storage and round-round naming for the images

    ChartPic_#SEQ(300,3)

    UseHttpHandler: UseHttpHandler

    <add key="ChartImageHandler" value="storage=file;timeout=20;dir=c:\TempImageFiles\;" />

    <add name="ChartImageHandler" preCondition="integratedMode" verb="GET,HEAD,POST" path="ChartImg.axd" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=xxx" />
        

    Wednesday, November 4, 2015 2:55 PM