HADesigner is a C# application that uses .NET.. system.forms, and system.odbc.
The binary _ALMOST_ runs unmodified under Mono. The problem lies in implementation differences between Microsoft.Data.Odbc, and System.Data.Odbc.
So that you know. PlutoHome began life under Windows, and was ported to Linux with version 2. HADesigner was quickly ported to version 2 of the software to use mysql and thus is a wee bit hackish in the code base.