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Return value of 'GetEnumerator' method call is never disposed

To avoid resource leaks, when calling 'GetEnumerator' method manually, dispose of the resulting enumerator after usage. This maintains a similar behaviour to the 'foreach' loop which automatically handles disposal. Disposal is not required if the enumerator is a struct or a sealed class, and it doesn't implement the Dispose pattern or interface.

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

GenericEnumeratorNotDisposed
Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | C# | Potential Code Quality Issues

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection GenericEnumeratorNotDisposed

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

Inspection Details

By default bundled with:

JetBrains Rider 2025.2, Qodana for .NET 2025.2,

Last modified: 18 September 2025