Export to Fixed Length File

Hello, Mark,

RadGridView provides different export options storing the exported data into different formats: https://docs.telerik.com/devtools/winforms/controls/gridview/exporting-data/overview 

I would recommend you to use the GridViewSpreadExport which utilizes our RadSpreadProcessing library to export the content of RadGridView to xlsx, csv, pdf and txt formats. The following help article demonstrates how to use the spread export and specify its ExportFormat property: https://docs.telerik.com/devtools/winforms/controls/gridview/exporting-data/spread-export 

I hope this information helps. If you need any further assistance please don't hesitate to contact me. 

Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik