The NumberFormatInfo class, which provides information that is used to format numbers, such as the currency, thousands separator, and decimal separator symbols for a particular culture. NET Framework includes the following three predefined IFormatProvider implementations to provide culture-specific information that is used in formatting or parsing numeric and date and time values: IFormatProvider implementations can also be specified explicitly by methods that have a parameter of type IFormatProvider, such as Int32.Parse(String, IFormatProvider) and String.Format(IFormatProvider, String, Object). For example, the DateTime.ToString(String) method implicitly uses an IFormatProvider implementation that represents the system's current culture. IFormatProvider implementations are often used implicitly by formatting and parsing methods. The GetFormat method is responsible for returning an object of that type. GetFormat is a callback method: The parsing or formatting method calls it and passes it a Type object that represents the type of object that the formatting or parsing method expects will provide formatting information. The IFormatProvider interface consists of a single method, IFormatProvider.GetFormat. Typical parsing methods are Parse and TryParse. Parsing operations convert the string representation of a value to a type with that value. Typical formatting methods are the ToString methods of a type, as well as Format. Formatting operations convert the value of a type to the string representation of that value. The IFormatProvider interface supplies an object that provides formatting information for formatting and parsing operations. ' On Monday, the balance of account 1042 was $16.34. ' The example displays the following output: using System ĭateTime dateValue = new DateTime(2009, 6, 1, 16, 37, 0) ĬultureInfo cultures =. In this case, a single date is displayed by using CultureInfo objects that represent four different cultures. The following example illustrates how an IFormatProvider implementation can change the representation of a date and time value.

Iformat provider