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#ThumbnailExists() [[_TOC_]] ##About Allows customization of the process that checks whether thumbnail pictures exist for reports ##Global.asax (C♯) ```csharp static Dictionary<string, byte[]> thumbnails = new Dictionary<string, byte[]>(); public override bool ThumbnailExists(ReportInfo reportInfo) { return thumbnails.ContainsKey((reportInfo.Category ?? "") + "#" + (reportInfo.Name ?? "")); } ``` ##Global.asax (VB.NET) ```visualbasic ```
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 **This documentation is for the legacy Izenda 6 product. Documentation for the new Izenda 7 product can be found at [[https://www.izenda.com/docs/|https://www.izenda.com/docs/]]**
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 --- * [[Izenda 7 Series Documentation|https://www.izenda.com/docs/]] * [[Release Notes]] * [[Upgrade Best Practices|FAQ/Izenda-Update-Best-Practices]] * [[FAQ]] * [[Tutorials]] * [[The Izenda API|/API/AdHocConfig]] * [[The AdHocSettings class|/API/AdHocSettings]] * [Developer Links and Guides](/Guides/Developer-Links-and-Guides) * [[Known Issues]] --- * <a href="http://www.izenda.com" rel="nofollow" target="_blank">Izenda Website</a> * [Product Video](https://www.youtube.com/watch?v=X3-yWFq0w5A) * <a href="http://www.izenda.com/blog" rel="nofollow" target="_blank">Izenda Blog</a> * <a href="http://www.izenda.com/company/" rel="nofollow" target="_blank">About Us</a> * <a href="http://www.izenda.com/contact-us/" rel="nofollow" target="_blank">Contact Us</a> --- * [Guide To Report Design](/Guides/ReportDesign) * [Making Custom Forms Video](http://www.youtube.com/watch?v=5b2axJlgdFs) --- * [[Acknowledgements]]
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