BinaryComboBox .NET Description:

BinaryComboBox .NET Ver. 1.0 is an advanced Microsoft .NET WinForms .NET control, providing a "flat styled" feature rich and highly configurable, "ComboBox" control for the Microsoft WinForms .NET platform.
A ComboBox control is one of the most commonly used control in a developer's toolbox.
Ironically, the standard ComboBox control available to developers, in the Microsoft .NET framework, suffers from some serious limitations when used in modern GUI applications, including a complete lack of direct support for using images, formatting display, ComboBox text AutoCompletion and Multi-Column drop-down list!
To offer developers an extended and feature rich ComboBox control, Binarymission now proudly presents its flagship .NET control - BinaryComboBox .NET.

BinaryComboBox .NET is an extended replacement for the standard .NET ComboBox control, providing a wealth of impressive features which makes it easier for you to develop and deliver more functionality in less time.

Features inclue - Multi-Column drop-down list, direct support for AutoCompletion, adding Images along with text, custom control color painting(with support for Alpha-blending), Drive list style and System-Font list style.
Written completely in C# .NET language, and comes with comprehensive MSDN style documentation.