Formatting Numeric Values
The NumberFormat property controls how RadNumericTextBox formats its value. The format that you specify in this way is applied when the numeric text box does not have focus. During editing, RadNumericTextBox always uses the actual number.
The value of NumberFormat takes precedence over both the Type property and the Culture property.
NumberFormat is a composite property with the following sub-properties:
|AllowRounding||Boolean||Specifies whether the value is rounded ( when set to true ) or truncated ( when set to false ) when the number of decimal places exceeds the value of DecimalDigits.|
|KeepNotRoundedValue||Boolean||Specifies whether the control will keep its not rounded value ( when set to true ) and show it when it is focused. Otherwise ( when set to false ) the old behavior is preserved, where the actual value of the control is the rounded value. By default this property is set to false .|
|KeepTrailingZerosOnFocus||Boolean||Specifies whether the control will keep its zero numbers( when set to true ) and show them when it is focused, according to the DecimalDigits setting. Otherwise ( when set to false ) the old behavior is preserved - the control will not display decimal zeros when focused. By default this property is set to false .|
|DecimalDigits||Integer||Specifies the number of digits that are displayed after the decimal separator.|
|DecimalSeparator||Character||Specifies the character that separates the fractional portion of a number.|
|GroupSeparator||Character||Specifies the character that separates each group of digits.|
|GroupSizes||Integer||Specifies the number of digits in each group, starting from the decimal separator.|
|NegativePattern||String||Specifies the pattern for formatting negative values. (See below for details on formatting patterns.)|
|PositivePattern||String||Specifies the pattern for formatting positive values. (See below for details on formatting patterns.)|
|ZeroPattern||String||Specifies the pattern for formatting the value when it equals zero. (See below for details on formatting patterns.)|
AllowRounding property is also responsible for displaying trailing zeros in the number. When set to true, trailing zeros will be added to fulfill the number of decimal places specified in the DecimalDigits property (e.g. 8.5 displayed as 8.50). When set to false, and the value is not occupying the allowed digits, no additional zeros will be added at the end of the number.
Formatting patterns are strings that control the placement of elements when formatting a numeric value. A Formatting pattern consists of the special symbol n, which represents the number, plus any literal characters that are part of the formatted value. Typically, the literal values are characters such as the negative sign ("-"), a currency symbol ("$"), parentheses, and so on.
The characters other than n in a formatting pattern are literal symbols. If you use the dollar sign ("$") as a currency symbol, for example, currency values are formatted using that symbol regardless of the value of the Culture property.
The NumberFormat inner tag of the RadNumericBox exposes three different patterns that can be specified:
ZeroPattern. Sample usage is demonstrated below:
<telerik:RadNumericTextBox runat="server" ID="RadNumericTextBox1" Value="2" ShowSpinButtons="true" Width="100" Skin="Material"> <NumberFormat AllowRounding="false" DecimalDigits="0" PositivePattern="+n°C" NegativePattern="-n°C" ZeroPattern="±n°C" /> </telerik:RadNumericTextBox>
For a live example of different NumberFormat settings, see Formatting Value.
Numeric value precision
GroupSeparator and DecimalSeparator should not be set as the same character. By default they are culture depended meaning that in “en-US” culture the default group separator would be ‘,’ (comma) and the default decimal separator would be ‘.’ (dot). If you decide to change one of the separators to the character which is already assigned to the other separator, you should also modify the character for the latter separator.