How to Remove the Thousands Separator

Updated on Aug 24, 2026

By default the RadMaskedNumericInput and RadMaskedCurrencyInput controls use a culture-aware thousands separator:

Example 1: AutoFillNumberGroupSeparators set to true which is by default

XAML

	<telerik:RadMaskedNumericInput HorizontalAlignment="Center"
								   Culture="en-US"
								   EmptyContent="Enter digits"
								   Mask="#9.0"
								   SelectionOnFocus="SelectAll"
								   SpinMode="PositionAndValue"
								   TextMode="PlainText"
								   UpdateValueEvent="LostFocus"
								   Value="12345" />

If you need to remove the thousands separator, you can set the AutoFillNumberGroupSeparator property to False:

Example 2: Setting the AutoFillNumberGroupSeparators property to false

XAML

	<telerik:RadMaskedNumericInput HorizontalAlignment="Center"
								   AutoFillNumberGroupSeparators="False"
								   Culture="en-US"
								   EmptyContent="Enter digits"
								   Mask="#9.0"
								   SelectionOnFocus="SelectAll"
								   SpinMode="PositionAndValue"
								   TextMode="PlainText"
								   UpdateValueEvent="LostFocus"
								   Value="12345" />