#FORMAT AS IFORMAT PROVIDER CODE#

One of the most powerful APIs for creating strings in. Whether via StringвЂs constructors, or StringBuilder, or ToString overrides, or helper methods on String like Join or Concat or Create or Replace, APIs to create strings are ubiquitous. NET Framework 1.0 was released, and more have joined the fray since. String creation is so fundamental that a myriad of ways of creating them have existed since. NET, that means lots and lots of System.String. An instance of this class is then passed as a parameter to a method that performs a custom formatting operation, such as String.Format(IFormatProvider,вЂ‚String,вЂ‚Object).Text processing is at the heart of huge numbers of apps and services, and in. This typically involves the creation of a formatting class that implements both IFormatProvider and ICustomFormatter. NET Framework also supports custom formatting. Its GetFormat method returns a culture-specific NumberFormatInfo or DateTimeFormatInfo object, depending on whether the CultureInfo object is used in a formatting or parsing operation that involves numbers or dates and times. The CultureInfo class, which represents a particular culture.For information about the predefined format strings recognized by a DateTimeFormatInfo object and used in numeric formatting operations, see Standard Date and Time Format Strings and Custom Date and Time Format Strings. The DateTimeFormatInfo class, which provides information that is used to format dates and times, such as the date and time separator symbols for a particular culture or the order and format of a date's year, month, and day components.For information about the predefined format strings recognized by a NumberFormatInfo object and used in numeric formatting operations, see Standard Numeric Format Strings and Custom Numeric Format Strings. 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:

#FORMAT AS IFORMAT PROVIDER CODE#

Note: Any code is released into the public domain. TransactionID.toString(CultureInfo.CreateSpecificCulture( 'qps-ploc')) Whenever you need an IFormatProvider you can pass a CultureInfo object: (CultureInfo.CurrentCulture) Д®ndTime.ToString(CultureInfo.InvariantCulture) In reality you will never need to call GetFormat method of IFormatProvider yourself. This lets your custom LordsNameFormatInfo class ride along inside an IFormatProvider, and you can preserve the idiom.

You can also use IFormatProvider for a way of passing arbitrary culture objects - through the IFormatProvider. As long as they implement IFormatProvider, and return objects they're asked for, you can bypass the built-in cultures. The value of IFormatProvider is that you create your own culture objects.

To get a NumberFormatInfo from an IFormatProvider: NumberFormatInfo format = NumberFormatInfo.GetInstance(provider) To get a DateTimeFormatInfo from an IFormatProvider: DateTimeFormatInfo format = DateTimeFormatInfo.GetInstance(provider) There's also inside knowledge that any IFormatProvider interface is likely being implemented by a class that descends from CultureInfo, or descends from DateTimeFormatInfo, so you could cast the interface directly: CultureInfo info = provider as CultureInfo ДateTimeFormatInfo dtfi = provider as DateTimeFormatInfo ДЄll that hard work has already been written for you: The way it would normally work is you ask the IFormatProvider to give you a DateTimeFormatInfo object: DateTimeFormatInfo format ДЇormat = (DateTimeFormatInfo)provider.GetFormat( typeof(DateTimeFormatInfo)) The two commonly available culture objects that an IFormatProvider can be queried for are: The interface is a gateway for a function to get a set of culture-specific data from a culture. CultureInfo.CreateSpecificCulture('de-CA') //German (Canada).

The IFormatProvider interface is normally implemented for you by a CultureInfo class, e.g.:

Format as iformat provider