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Look Behind the IQueryable Curtain

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21 Jul 2020CPOL9 min read 5.3K   16  
Learn how to parse complex expression trees, and even modify them to alter IQueryable results.
Learn how to parse the expressions behind queries using the built-in ExpressionVisitor class. After successfully parsing an expression tree, discover how to modify the tree and apply your own rules by implementing your own queryable host.

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


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Program Manager Microsoft
United States United States
Note: articles posted here are independently written and do not represent endorsements nor reflect the views of my employer.

I am a Program Manager for .NET Data at Microsoft. I have been building enterprise software with a focus on line of business web applications for more than two decades. I'm the author of several (now historical) technical books including Designing Silverlight Business Applications and Programming the Windows Runtime by Example. I use the Silverlight book everyday! It props up my monitor to the correct ergonomic height. I have delivered hundreds of technical presentations in dozens of countries around the world and love mentoring other developers. I am co-host of the Microsoft Channel 9 "On .NET" show. In my free time, I maintain a 95% plant-based diet, exercise regularly, hike in the Cascades and thrash Beat Saber levels.

I was diagnosed with young onset Parkinson's Disease in February of 2020. I maintain a blog about my personal journey with the disease at https://strengthwithparkinsons.com/.


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