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This control provides a rich user experience by allowing users to define various value formats, as well as additionally customize them to meet the customers' business requirements. The rich formatting options let users define different value formats. Besides the predefined numeric, percentage and currency formats, developers can also create their custom formats. RadNumericUpDown also allows you to define minimum and maximum values to which the user can increment/decrement the input’s value. Additionally, you can specify the “change” that will be applied to the value upon each increase/decrease. The control can also be used in read-only mode in which the user cannot set custom values.

RadNumericUpDown can be used in UpDown mode that uses paired arrow-buttons to increment or decrement a certain value, i.e. a scroll position or a number displayed in a companion control without showing a text box. To accomplish this feature you should set the ShowTextBox property to false.

Moreover, RadNumericUpDown can be fully declared both in xaml and code behind, and extensively customized in Microsoft Expression Blend. However, changing the control template of RadNumericUpDown may impact its functionality in case some required parts are missed. For more details about required parts in the control template as well as appearance and styling you should refer to the Styles and Templates section of this help.

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