Why Does My C# Constructor Throw an 'Inconsistent Accessibility' Error?

Inconsistent access rights in C# constructor

While trying to pass objects between two forms in a C# application, the developer encountered an error related to the access levels of parameters and methods. The system generated the error message "Inconsistent access rights: The parameter type has lower access rights than the method."

The problem occurs in the client form's constructor, which is declared public. However, one of the constructor's parameters _oActInt's type (ACTInterface) is declared private.

In C#, a parameter cannot have lower access than the method that contains it. Since the client form's constructor is public, all of its parameters need to be public or protected. However, ACTInterface is declared private, resulting in inconsistent access errors.

To solve this problem, developers can adjust the access permissions of the client constructor or ACTInterface type. For example:

• Make the client constructor protected or internal: This will reduce the access rights of the constructor and match the access rights of ACTInterface.
• Set the ACTInterface type to internal: This will increase the access rights of the ACTInterface, making it accessible to client forms.

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