This program is ideal for handling files form legacy or mainframe type app.
EditBy: sortX is designed for those of us that deal with flat files, delimited files, fixed and variable length record text files Visual Basic 6 arrays. This program is ideal for handling files form legacy or mainframe type applications. Written in C++ and Assembler, this powerful component can sort text files fast, using your computers RAM effectively due to its powerful sort architecture.

sortX sorts all types of records and can deal with those that contain embedded nulls (Hex 00s) that it handles in a specific way

The Execution of the sortX functions is made very simple by the FACT that they are held in a Type Library DLL for VB6, or .NET Assembly for VB.NET and C#.NET. Its a case of making a small change in your project, References to indicate the use of this Type Library or Assembly
the download Link 1 is Visual Basic 6 version,the 2 is NET version. you can free download sortX 3.0 now.