Code inspection: Variable in local function hides variable from outer scope

This inspection reports a local variable or parameter declared in an inner scope when it hides a variable from an outer scope. Reusing the same name in nested local functions or lambdas can make it unclear which variable the code is reading or modifying.

Example

                void M()
                {
                    int value = 1;
                    void Local()
                    {
                        int value = 2;
                        Console.WriteLine(value);
                    }
                }
            

                void M()
                {
                    int value = 1;
                    void Local()
                    {
                        int localValue = 2;
                        Console.WriteLine(localValue);
                    }
                }
            

Quick-fix

Rename the inner variable to avoid hiding the outer variable.

01 April 2026