List of Free code TextBox
A simple ASP.NET Currency / Money TextBox User Control
A ASP.NET TextBox control used with AJAX maskeditextender makes it possible to enter numbers but it's not very intuitive to use. CurrencyTextBox control is a user control on top of TextBox to allow easy entry/update of money / currency values.
9/12/2010: Updated with some fixes.
Asp.Net Watermark Textbox custom server control
Its a asp.net customer server control that allows you to simply use it on any web page, as you normally use a textbox control.
The best part is its ...
UnifiedASP Web Controls
This control pack includes an extended ASP.Net 2.0 GridView with simplified support for sorting and paging, and an extended TextBox control with built-in and more-easily configured validators. It was built as part of the open-source framework UnifiedASP.