Why Does Passing a Less Accessible Parameter to a More Accessible Method Cause an Accessibility Issue?

Accessibility Inconsistency: Parameter Accessibility Restrictions

The provided code demonstrates an accessibility conflict when transferring an ACTInterface object between forms. The clients form experiences an accessibility issue.

The login form's ACTInterface field, while private, is accessible via a public method. Conversely, the clients form's constructor, accepting an ACTInterface parameter, is public. This creates an inconsistency: the parameter type (ACTInterface) is less accessible than the method (clients constructor).

The error highlights this incompatibility. To correct this, the accessibility of ACTInterface must match or exceed that of the clients class. This can be achieved by making ACTInterface public, or by modifying the clients constructor's accessibility to protected or internal.

These adjustments ensure consistent accessibility between the ACTInterface parameter and the clients class, resolving the conflict.

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