ROSLYN.USAGE.CA2249 : Consider using 'string.Contains' instead of 'string.IndexOf' (C#)

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ROSLYN.USAGE.CA2249 : Consider using 'string.Contains' instead of 'string.IndexOf' (C#)

Summary

Calls to 'string.IndexOf' where the result is used to check for the presence/absence of a substring can be replaced by 'string.Contains'.

This check corresponds to Roslyn rule CA2249. For full rule details, see the Microsoft website: CA2249.

Properties

Class Name	Consider using 'string.Contains' instead of 'string.IndexOf' (C#)
Significance	reliability
Mnemonic	ROSLYN.USAGE.CA2249
Categories	None
Availability	Available for C# only.
Enabling	Checks for this warning class are enabled by default. To disable them, add the following WARNING_FILTER rule to the project configuration file. WARNING_FILTER += discard class="Consider using 'string.Contains' instead of 'string.IndexOf' (C#)"

Relevant Configuration File Parameters

The following configuration file parameters affect checks for this warning class.