ReSharper – Possible Null Assignment when using Microsoft.Contracts

Note: as of the current R# 8.0 EAP, this functionality is included. Here’s the solution for the current (i.e. .NET 4.0) version of Code Contracts: Inside …\ExternalAnnotations\mscorlib\Contracts.xml, add the following: <assembly name=”mscorlib”> <member name=”M:System.Diagnostics.Contracts.Contract.Assert(System.Boolean)”> <attribute ctor=”M:JetBrains.Annotations.AssertionMethodAttribute.#ctor”/> <parameter name=”condition”> <attribute ctor=”M:JetBrains.Annotations.AssertionConditionAttribute.#ctor(JetBrains.Annotations.AssertionConditionType)”> <argument>0</argument> </attribute> </parameter> </member> <member name=”M:System.Diagnostics.Contracts.Contract.Assert(System.Boolean, System.String)”> <attribute ctor=”M:JetBrains.Annotations.AssertionMethodAttribute.#ctor”/> <parameter name=”condition”> <attribute ctor=”M:JetBrains.Annotations.AssertionConditionAttribute.#ctor(JetBrains.Annotations.AssertionConditionType)”> <argument>0</argument> </attribute> … Read more