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Code Inspection: Possible 'System.InvalidOperationException'

Last modified: 21 July 2022

Before you cast a variable of a nullable type to its underlying type, you should make sure that the value is not null. In the example below, we have a nullable double x, and the expression (double)x will throw an exception if x is null.

ReSharper suggests checking for null:

Alternatively, ReSharper can add the assertion that the expression is not null: