Updated wikipage Workaround Eiffel .NET limitations. (Signed-off-by:jocelyn).

git-svn-id: https://svn.eiffel.com/eiffel-org/trunk@2429 abb3cda0-5349-4a8f-a601-0c33ac3a8c38

documentation/23.09/solutions/dotnet/eiffel-net-language/eiffel-net-integration/Workaround-Eiffel-.NET-limitations.wiki

@@ -1,6 +1,66 @@
-[[Property:modification_date|Mon, 02 Oct 2023 10:23:24 GMT]]
+[[Property:modification_date|Mon, 02 Oct 2023 10:25:19 GMT]]
 [[Property:publication_date|Mon, 02 Oct 2023 10:22:20 GMT]]
 [[Property:uuid|AF5801CA-928B-4870-BCC4-53DCAB23AF96]]
 [[Property:weight|10]]
 [[Property:title|Workaround Eiffel .NET limitations]]
 [[Property:link_title|Workarounds]]
+
+==Using generic .NET classes through a facade==
+Currently, Eiffel does not support consuming generics from C# classes. This tutorial demonstrates a workaround for this limitation by creating a Facade for a `List<string>` in C#
+
+===Creating a facade for the List type===
+A Facade simplifies access to complex components. In this case, we will create a Facade to manage a list of strings. The Facade will encapsulate the list's functionality and expose a more straightforward interface. Here's how you can do it:
+
+<code lang="cs">
+using System.Collections;
+namespace ListOfString;
+
+/// <summary>
+/// Facade for a List<string> that encapsulates the list's functionality and exposes a few methods
+/// </summary>
+public class ListOfString
+{
+    private List<string> _list;
+
+    public ListOfString()
+    {
+        _list = new List<string>();
+    }
+
+    public void Add(string item)
+    {
+        _list.Add(item);
+    }
+
+    public bool Contains(string item)
+    {
+        return _list.Contains(item);
+    }
+
+    public void Remove(string item)
+    {
+        _list.Remove(item);
+    }
+
+    public IList GetList()
+    {
+        return _list.ToList();
+    }
+}
+</code>
+
+===Creating a C# library===
+To consume the Facade in Eiffel, we need to create a C# library. I recommend following the tutorial on creating a class library with C# and .NET on Microsoft’s official site. You can access it [https://learn.microsoft.com/en-us/dotnet/core/tutorials/library-with-visual-studio?pivots=dotnet-7-0 here]. This tutorial guides you through the process of creating a class library using C# and .NET.
+
+===Consuming the C# library from Eiffel===
+Finally, we need to consume the C# library from Eiffel. 
+
+Open the Eiffel configuration file (.ecf) of your project and add the following entry
+
+<code><assembly name="ListOfString" location="$PATH_CS_LIB\ListOfString.dll"/></code>
+
+
+===Conclusion===
+By creating a Facade for a `List<string>` in C#, we can effectively consume C# generic features in Eiffel. 
+This approach can be extended to other generic types as well.
+