Welcome to the Open3270 project.

The WinFXDeveloper TN3270 library provides a high level API to connect to mainframe 3270 sessions from a Microsoft .NET application. Key features include

• Support for TN3270 and TN3270E from all Microsoft .NET applications (VB.NET and C#)
• Support for formatted and unformatted screens
• Support for multiple LUs and connections that require a specific LU to be specified
• Support for unlimited TN3270 connections from a single application
• Support for ASP.NET and WinForms applications
• 100% Managed Microsoft .NET 3270 emulation
• Support for multiple LUs, formatted and unformatted screens and most 3270 "bugs".
• Coded entirely in C#, with overlapped I/O replacing the frequently used multi-threaded server approach to 3270 connectivity, this library is extremely efficient and lightweight, suitable both for WinForms applications as well as ASP.NET server applications.