Upgrade .NET Framework version to Latest Version

Microsoft is not supporting anymore the .NET 4.0: https://devblogs.microsoft.com/dotnet/support-ending-for-the-net-framework-4-4-5-and-4-5-1/

And cTrader still uses it, which affects badly both the performance of cTrader itself and the ability of 3rd party developers to use the latest features of .NET and C#.

There is no reason to keep using outdated .NET version, everyone is migrating to the .NET core (or .NET 5.0 in near future) and WPF/Windows Form are now available on it too, please start thinking and working on migration to at least latest .NET framework version if migration to the .NET core is not feasible right now.

And you might also think about migrating to a cross-platform UI framework like Avalonia, if you do that then you will be able to make cTrader available for both Linux and Mac users.

Without planning for migration to the latest .NET version your platform will obsolete and you will lose your market share and developers community.