Inconsistent accessibility error with the following c# code. Why?

问题

Whats wrong with the following c# code? Compiler reports this error:

Inconsistent accessibility: parameter type \'ClassLibrary1.Interface1\' is less accessible than method \'ClassLibrary1.Class1.Class1(ClassLibrary1.Interface1)\'

with the following code:

interface Interface1<T>
{
    bool IsDataValid();
    /* Other interfaces */
}

public class Class1<T>
{
    public Interface1<T> interface1;

    public Class1(Interface1<T> interface1)
    {
        this.interface1 = interface1;
    }

}

I\'ve since designed my code differently using inheritence to but if anyone could tell me what the above is wrong I\'d greatly appreciate it.

回答1:

your "Interface1" isn't public..

public interface Interface1<T>
{
    bool IsDataValid();
    /* Other interfaces */
}

回答2:

Mark your interface as public:

public interface Interface1<T>

If you leave out the accessibility label, it defaults to internal, that is, only accessible to other classes within the assembly.

回答3:

second solution is If your interface is not public then dont make your class public where you are making a handle of interface.

来源：https://stackoverflow.com/questions/524761/inconsistent-accessibility-error-with-the-following-c-sharp-code-why