C# “is inaccessible due to its protection level” [Solved]

Some time its happen when your modifier are private or protected but need to access anywhere that time just your function need to be protected to public.

I had happened same problem when i write code radio button "OnCheckedChanged" event. I have solved that way to change modifier protected to public.

 public void ShareTransferSelection(object sender, EventArgs e)
    {
      // Code here
    }

Happy Programming!!