Why is this an issue?

Inconsistent naming conventions can lead to confusion and errors when working in a team. This rule ensures that all generic type parameter names follow a consistent naming convention by checking them against a provided regular expression.

The default configuration follows Microsoft’s recommended convention:

• Generic type parameter names must start with an upper case 'T', e.g. T
• The rest of the name should use Pascal casing, starting with an upper case character, e.g. TKey
• Short abbreviations of 2 letters can be capitalized, e.g. TFooID
• Longer abbreviations should be lowercased, e.g. TFooHtml

How to fix it

To fix this issue, ensure that all generic type parameter names in your code follow the naming convention specified in the regular expression.

Code examples

Noncompliant code example

With the default parameter value ^T(([A-Z]{1,3}[a-z0-9]+)*([A-Z]{2})?)?$:

Public Class Foo(Of tkey) ' Noncompliant
End Class

Compliant solution

Public Class Foo(Of TKey) ' Compliant
End Class

Resources

Documentation

• Microsoft Learn - Generic Type Parameters (C# reference)