Damien Guard • 3/2/2021

Creating OR expressions in LINQ

This technical article addresses the challenge of dynamically constructing OR conditions in LINQ queries, which is more complex than chaining AND conditions. It provides a background on runtime filter building, demonstrates the problem with nested conditional logic, and offers a solution using a custom `Or.Combine` helper method that leverages Expression Trees to merge predicates. The post includes code examples and explanations of how the Expression Visitor works to replace parameters, making it a practical resource for C# developers working with advanced LINQ scenarios.

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#c #linq #Expression Trees