NumberLike the MaskedTextBox, the NumericTextBox derives from ValueRangeTextBox and only supports numerical input. Through the NumberStyles property, a combination of values can be specified to indicate the permitted number styles that can be inputted. By default, NumberStyles.Numbers.

Table 1: NumberStyles values

Member	Description
None	Indicates that none of the bit styles are allowed.
AllowLeadingWhite	Indicates that a leading white-space character must be ignored during parsing.
AllowTrailingWhite	Indicates that trailing white-space character must be ignored during parsing.
AllowLeadingSign	Indicates that the numeric string can have a leading sign.
AllowTrailingSign	Indicates that the numeric string can have a trailing sign.
AllowParentheses	Indicates that the numeric string can have one pair of parentheses enclosing the number.
AllowDecimalPoint	Indicates that the numeric string can have a decimal point.
AllowThousands	Indicates that the numeric string can have group separators, for example, separating the hundreds from the thousands.
AllowExponent	Indicates that the numeric string can be in exponential notation.
AllowCurrencySymbol	Indicates that the numeric string is parsed as currency if it contains a currency symbol. Otherwise, it is parsed as a number.
AllowHexSpecifier	Indicates that the numeric string represents a hexadecimal value.
Integer	Indicates that the AllowLeadingWhite, AllowTrailingWhite, and AllowLeadingSign styles are used. This is a composite number style.
HexNumber	Indicates that the AllowLeadingWhite, AllowTrailingWhite, and AllowHexSpecifier styles are used. This is a composite number style.
Number	Indicates that the AllowLeadingWhite, AllowTrailingWhite, AllowLeadingSign, AllowTrailingSign, AllowDecimalPoint, and AllowThousands styles are used. This is a composite number style.
Float	Indicates that the AllowLeadingWhite, AllowTrailingWhite, AllowLeadingSign, AllowDecimalPoint, and AllowExponent styles are used. This is a composite number style.
Currency	Indicates that all styles, except AllowExponent and AllowHexSpecifier, are used. This is a composite number style.
Any	Indicates that all styles, except AllowHexSpecifier, are used. This is a composite number style.