Telerik RadNumericTextBox is an input control that accepts only numeric entries. It shares the common properties of all RadInput controls, including support for skins, styles for different states, empty message support, conditional postback on text change, flexible caret and button positioning, labels, and so on. About RadNumericTextBox for ASP.NET AJAX
When you need data entry control that restricts the user to enter only numeric values, Telerik NumericTextBox control for ASP.NET AJAX is the perfect match. The control could be configured to use specific numeric type (currency, number, percent) and allow only a range of numeric values to be entered by the user.
The common features of all RadInput controls include
A client-side API with powerful methods to let you configure the input controls and numerous events to let you respond to almost everything the user does with the controls.
Built-in copy and paste support that users can invoke with both keyboard shortcuts and a built-in context menu.
Skins to change the look and feel of the input controls so that they match the other controls on your Web page.
Style properties that let you configure the look of the input control, depending on its current state.
The ability to add labels and buttons that are associated with the input control.
Empty message support.
Client/Server side data validation.
Caret positioning and text selection when the control receives focus.
Optional postback when the user changes the value.
Support for all major browsers, including Internet Explorer 6.0 and above, Mozilla Firefox 2.0 and above, Google Chrome 2.0 and above, Opera 9.0 and above, and Safari 3.0 and above.
In addition to these common features, each RadInput control provides its own unique features, designed to make it as easy as possible to work with a particular type of data:
***RadNumericTextBox* controls support the following specific features also:
Currency, Percentage, or Number mode
Formatting options based on Culture settings or your own detailed requirements.
Increment/Decrement with mouse wheel, arrow keys, and spin buttons.
Nullable DbValue property