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Specifying a Culture

The RadCalendar control supports the System.Globalization namespace. This namespace consists of classes (CompareInfo, CultureInfo, RegionInfo, etc.) that contain culture-related information such as the language, country/region, sort order for strings, calendars in use, and format patterns for dates, currency, and numbers. They are useful classes for writing internationalized applications.

RadCalendar supports all the cultures in the System.Globalization namespace that are based on the Gregorian calendar.

For East Asian, Middle Eastern and other similar cultures, which have an alternative standard for a different Calendar implementation, RadCalendar supports their localization and native date and time value representation, but automatically uses the Gregorian calendar internally.


The CultureInfo class represents information about a specific culture including the names of the culture, the writing system, and the calendar used, as well as access to culture-specific objects that provide information for common operations, such as formatting dates and sorting strings.

The culture names follow the RFC 1766 standard in the format "-", where is a lowercase two-letter code derived from ISO 639-1 and is an uppercase two-letter code derived from ISO 3166. For example, U.S. English is "en-US".

All RadCalendar controls let you associate a CultureInfo object with the control to govern the formatting and parsing of date and time values. In order to specify a culture for RadCalendar you should use the CultureInfo property.

On the picker controls (e.g. RadDatePicker , RadTimePicker, RadDateTimePicker) you can assign a separate CultureInfo object to the embedded popup calendar and/or time view control, using the embedded calendar's CultureInfo property or the embedded time view's Culture property.

The associated CultureInfo object controls:

  • The default format for date and time values that the control displays. You can override this pattern by specifying a date format pattern as the value of the following properties:

    • On RadCalendar (including the embedded popup calendar accessed through the Calendar property of RadDatePicker and RadDateTimePicker controls) - the TitleFormat and DayCellToolTipFormat properties.
  • The strings used when applying a date format pattern such as month names, day names, separator characters, etc.

  • The first day of the week when the FirstDayOfWeek property is set to "Default".

  • The way RadDatePicker, RadTimePicker and RadDateTimePicker parse values that the user types into the input area.

The CultureInfo property of RadCalendar does not affect the labels on the buttons in the month/year navigation popup. For information on localizing these strings, seeLocalizing Strings.

Assigning the culture declaratively

You can assign the culture of a RadCalendar control declaratively in the source:

    CultureInfo="French (France)">
<br />
    Culture = "French (France)">
    <DateInput Width="100%"></DateInput>
    <DatePopupButton CssClass="radPopupImage_Default" />
<br />
    Culture="French (France)">
    <DateInput Width="100%"></DateInput>
    <DatePopupButton CssClass="radPopupImage_Default" />
    <TimePopupButton CssClass="radPopupImage_Default" />
<br />
    Culture="French (France)">

Assigning the culture in the code-behind

You can assign a culture property in the code-behind as well:

protected void Page_Load(object sender, EventArgs e)
    RadCalendar1.CultureInfo = System.Threading.Thread.CurrentThread.CurrentCulture;
    RadDatePicker.Culture = new System.Globalization.CultureInfo("en-US", true);
    RadTimePicker.Culture = new System.Globalization.CultureInfo("fr-FR", true);
    RadDateTimePicker.Culture = RadDateTimePicker.Culture;
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    RadCalendar1.CultureInfo = System.Threading.Thread.CurrentThread.CurrentCulture
    RadDatePicker.Culture = New System.Globalization.CultureInfo("en-US", True)
    RadTimePicker.Culture = New System.Globalization.CultureInfo("fr-FR", True)
    RadDateTimePicker.Culture = RadDateTimePicker.Culture
End Sub

See Also

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