I'm looking through the code of the popular WPF graphing component LiveCharts, in an effort to port it to .NET 3.5. However, I'm not sure how this bit works:
LiveCharts.AxisCore.TopLimit is declared as an internal property. There are others too declared the same. Then, in LiveCharts.Wpf.Axis, a class variable public AxisCore Model { get; set; } is declared, and these internal properties are referenced in various methods, for example in the method public void SetRange(double min, double max).
These are separate assemblies (as far as I can tell), with Core being a portable assembly targeted only at .NET Framework 4. and WpfView a vanilla class library. How can these internal properties be accessible without using the InternalsVisibleTo attribute?
The Core Project is using the InternalsVisibleTo Attribute in the file AssemblyInfo.cs:
[assembly:InternalsVisibleTo("LiveCharts.Uwp,PublicKey=002400000480000094000000060200000024000052534131000400000100010009132ae1a474e2ecf9903c1ef8945a2119aa0b9a3b4e40c43f6cb66233669e3007b4109d5c37957c2d0c5cfe7fce34366150210f83c618c18cdc8d7b763bff60419837a2185df1867c73f679e05f82b861e6ca764612eabc36d71858260b262bb9c3ad546c9692fe6379a520b6c5fc701e0ee6d071b52e9f20166fc0752ff894")]
[assembly:InternalsVisibleTo("LiveCharts.Wpf,PublicKey=002400000480000094000000060200000024000052534131000400000100010009132ae1a474e2ecf9903c1ef8945a2119aa0b9a3b4e40c43f6cb66233669e3007b4109d5c37957c2d0c5cfe7fce34366150210f83c618c18cdc8d7b763bff60419837a2185df1867c73f679e05f82b861e6ca764612eabc36d71858260b262bb9c3ad546c9692fe6379a520b6c5fc701e0ee6d071b52e9f20166fc0752ff894")]
[assembly:InternalsVisibleTo("LiveCharts.Geared,PublicKey=0024000004800000940000000602000000240000525341310004000001000100bd2e66fab8ce9a4900047ffda57d2f525cf6313dcc9d20994c5e6b3cd8fca906ba7ccd54bea5f7bd6cb503deb81d685259e355e3a9b5c21e5bc80091f08846246371b2a71ab306655651261e910adfa61be236b77d11df23a44d48f00a0e07c689f9a2daaff16d505a1c861d9854d92ed5a8a38fb28c1343fb691462873e71a1")]