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Calendar

The calendar control lets people select and view a single date or a range of dates in their calendar. It’s made up of 3 separate views: the month view, year view, and decade view.

Usage

Basic
Basic Calendar configuration showcasing default usage, disabled state, week numbers, highlighted months, and time picker.


Basic Calendar:
Selected date
March 2025
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Disabled:
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March 2025
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Week numbers:
Selected date
March 2025
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8
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13


Highlight months:
Selected date
March 2025
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StartingValue: December 2020, Time: 20:45:
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Min & Max
Demonstrates setting minimum and maximum selectable dates in the calendar.


Min: Now.AddDays(-5)
Max: Now.AddDays(+5)
Selected date
March 2025
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Min: Now.AddMonths(-2)
Max: Now.AddMonths(+1)
Selected date
March 2025
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Min: Now.AddYears(-5)
Max: Now.AddYears(+1)
Selected date
March 2025
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Style & Class
Showcases custom styling and class usage for the calendar component.


Component's Style & Class:

Selected date
March 2025
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Selected date
March 2025
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Styles & Classes:

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:
Selected date
March 2025
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Binding
Illustrates binding the selected date value to a variable.

Selected date 08/19/2023
August 2023
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Selected date: 08/19/2023 00:00:00 +00:00
Culture
By default, BitCalendar picks the current culture. But you can provide your own instance of CultureInfo for any custom culture.
You also can use our CultureInfoHelper class or check its code to see how to create a custom culture.

fa-IR culture with Farsi names:

Selected date
اسفند 1403
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ی
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چ
پ
ج


fa-IR culture with Fingilish names:

Selected date
Esfand 1403
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Y
D
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C
P
J
Templates
Use custom templates for day cells, month cells, and year cells.


DayCellTemplate:

Selected date
March 2025
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MonthCellTemplate:

Selected date
March 2025
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YearCellTemplate:

Selected date
March 2025
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MonthPicker
Demonstrates controlling the visibility and position of the month picker.


IsMonthPickerVisible:

Selected date
March 2025
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ShowMonthPickerAsOverlay:

Selected date
March 2025
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TimePicker
Demonstrates the time picker functionality integrated within the calendar component.

Selected date 03/11/2025
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:

Selected DateTime: 03/11/2025 18:12:23 +00:00
Hour/Minute step
Customizes the step increments for hours and minutes in the time picker.


HourStep = 2:

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MinuteStep = 15:

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Validation
Demonstrates validation for BitCalendar within a form, including required fields and custom validation messages.

Selected date
March 2025
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RTL
Use BitCalendar in right-to-left (RTL).

Selected date
March 2025
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API

BitCalendar parameters
Name
Type
Default value
Description
Classes BitCalendarClassStyles null Custom CSS classes for different parts of the BitCalendar.
Culture CultureInfo System.Globalization.CultureInfo.CurrentUICulture CultureInfo for the Calendar.
DateFormat string? null The format of the date in the Calendar.
DayCellTemplate RenderFragment<DateTimeOffset>? null Used to customize how content inside the day cell is rendered.
GoToNextMonthTitle string Go to next month The title of the Go to next month button (tooltip).
GoToNextYearRangeTitle string Next year range {0} - {1} The title of the Go to next year range button (tooltip).
GoToNextYearTitle string Go to next year {0} The title of the Go to next year button (tooltip).
GoToPrevMonthTitle string Go to previous month The title of the Go to previous month button (tooltip).
GoToPrevYearRangeTitle string Previous year range {0} - {1} The title of the Go to previous year range button (tooltip).
GoToPrevYearTitle string Go to previous year {0} The title of the Go to previous year button (tooltip).
GoToTodayTitle string Go to today The title of the GoToToday button (tooltip).
GoToNowTitle string Go to now The title of the GoToNow button (tooltip).
HighlightCurrentMonth bool false Whether the month picker should highlight the current month.
HighlightSelectedMonth bool false Whether the month picker should highlight the selected month.
HideTimePickerTitle string Hide time picker The title of the HideTimePicker button (tooltip).
InvalidErrorMessage string? null The custom validation error message for the invalid value.
ShowMonthPicker bool true Whether the month picker is shown or hidden.
MaxDate DateTimeOffset null The maximum allowable date of the calendar.
MinDate DateTimeOffset? null The minimum allowable date of the calendar.
MonthCellTemplate RenderFragment<DateTimeOffset>? null Used to customize how content inside the month cell is rendered.
MonthPickerToggleTitle string {0}, change month The title of the month picker's toggle (tooltip).
ShowMonthPickerAsOverlay bool false Show month picker on top of date picker when visible.
OnSelectDate EventCallback<DateTimeOffset?> Callback for when the user selects a date.
SelectedDateAriaAtomic string Selected date {0} The text of selected date aria-atomic of the calendar.
ShowGoToToday bool true Whether the GoToToday button should be shown or not.
ShowTimePicker bool false Whether the time picker should be shown or not.
ShowTimePickerTitle string Show time picker The title of the ShowTimePicker button (tooltip).
ShowWeekNumbers bool false Whether the week number (weeks 1 to 53) should be shown before each week row.
ShowGoToNow bool true Whether the GoToNow button should be shown or not.
StartingValue DateTimeOffset? null Specifies the date and time of the calendar when it is showing without any selected value.
Styles BitCalendarClassStyles null Custom CSS styles for different parts of the BitCalendar.
TimeFormat BitTimeFormat BitTimeFormat.TwentyFourHours The time format of the time-picker, 24H or 12H.
WeekNumberTitle string Week number {0} The title of the week number (tooltip).
YearCellTemplate RenderFragment<int>? null Used to customize how content inside the year cell is rendered.
YearPickerToggleTitle string {0}, change year The title of the year picker's toggle (tooltip).
YearRangePickerToggleTitle string {0} - {1}, change month The title of the year range picker's toggle (tooltip).
HourStep int 1 Determines increment/decrement steps for calendar's hour.
MinuteStep int 1 Determines increment/decrement steps for calendar's minute.
BitInputBase parameters
Name
Type
Default value
Description
DisplayName string? null Gets or sets the display name for this field.
InputHtmlAttributes IReadOnlyDictionary<string, object>? null Gets or sets a collection of additional attributes that will be applied to the created element.
Name string? null Gets or sets the name of the element. Allows access by name from the associated form.
NoValidate bool false Disables the validation of the input.
OnChange EventCallback<TValue?> Callback for when the input value changes.
ReadOnly bool false Makes the input read-only.
Required bool false Makes the input required.
Value TValue? null Gets or sets the value of the input. This should be used with two-way binding.
BitInputBase public members
Name
Type
Default value
Description
InputElement ElementReference The ElementReference of the input element.
FocusAsync() () => ValueTask Gives focus to the input element.
FocusAsync(bool preventScroll) (bool preventScroll) => ValueTask Gives focus to the input element.
BitComponentBase parameters
Name
Type
Default value
Description
AriaLabel string? null The aria-label of the control for the benefit of screen readers.
Class string? null Custom CSS class for the root element of the component.
Dir BitDir? null Determines the component direction.
HtmlAttributes Dictionary<string, object> new Dictionary<string, object>() Capture and render additional attributes in addition to the component's parameters.
Id string? null Custom id attribute for the root element. if null the UniqueId will be used instead.
IsEnabled bool true Whether or not the component is enabled.
Style string? null Custom CSS style for the root element of the component.
Visibility BitVisibility BitVisibility.Visible Whether the component is visible, hidden or collapsed.
BitComponentBase public members
Name
Type
Default value
Description
UniqueId Guid Guid.NewGuid() The readonly unique id of the root element. it will be assigned to a new Guid at component instance construction.
RootElement ElementReference The ElementReference of the root element.
BitCalendarClassStyles properties
Name
Type
Default value
Description
Root string? null Custom CSS classes/styles for the root element of the BitCalendar.
Container string? null Custom CSS classes/styles for the main container of the BitCalendar.
DayPickerWrapper string? null Custom CSS classes/styles for the day-picker's wrapper of the BitCalendar.
DayPickerHeader string? null Custom CSS classes/styles for the day-picker's header of the BitCalendar.
DayPickerMonth string? null Custom CSS classes/styles for the day-picker's month of the BitCalendar.
DayPickerNavWrapper string? null Custom CSS classes/styles for the wrapper of the day-picker's nav buttons of the BitCalendar.
PrevMonthNavButton string? null Custom CSS classes/styles for the Go to previous month button of the BitCalendar.
PrevMonthNavIcon string? null Custom CSS classes/styles for the Go to previous month icon of the BitCalendar.
GoToTodayButton string? null Custom CSS classes/styles for the Go to today button of the BitCalendar.
GoToTodayIcon string? null Custom CSS classes/styles for the Go to today icon of the BitCalendar.
NextMonthNavButton string? null Custom CSS classes/styles for the Go to next month button of the BitCalendar.
NextMonthNavIcon string? null Custom CSS classes/styles for the Go to next month icon of the BitCalendar.
DaysHeaderRow string? null Custom CSS classes/styles for the header row of the days of the BitCalendar.
WeekNumbersHeader string? null Custom CSS classes/styles for the header of the week numbers of the BitCalendar.
DaysRow string? null Custom CSS classes/styles for each row of the days of the BitCalendar.
WeekNumber string? null Custom CSS classes/styles for the week number of the BitCalendar.
DayButton string? null Custom CSS classes/styles for each day button of the BitCalendar.
TodayDayButton string? null Custom CSS classes/styles for today day button of the BitCalendar.
SelectedDayButton string? null Custom CSS classes/styles for selected day button of the BitCalendar.
TimePickerContainer string? null Custom CSS classes/styles for the time-picker's main container of the BitCalendar.
TimePickerWrapper string? null Custom CSS classes/styles for the time-picker's wrapper of the BitCalendar.
TimePickerHourInput string? null Custom CSS classes/styles for the time-picker's hour input of the BitCalendar.
TimePickerHourMinuteSeparator string? null Custom CSS classes/styles for the time-picker's hour/minute separator of the BitCalendar.
TimePickerMinuteInput string? null Custom CSS classes/styles for the time-picker's minute input of the BitCalendar.
Divider string? null Custom CSS classes/styles for the main divider of the BitCalendar.
YearMonthPickerWrapper string? null Custom CSS classes/styles for the year-month-picker's wrapper of the BitCalendar.
MonthPickerHeader string? null Custom CSS classes/styles for the month-picker's header of the BitCalendar.
YearPickerToggleButton string? null Custom CSS classes/styles for the year-picker's toggle button of the BitCalendar.
MonthPickerNavWrapper string? null Custom CSS classes/styles for the wrapper of the month-picker's nav buttons of the BitCalendar.
PrevYearNavButton string? null Custom CSS classes/styles for the Go to previous year button of the BitCalendar.
PrevYearNavIcon string? null Custom CSS classes/styles for the Go to previous year icon of the BitCalendar.
NextYearNavButton string? null Custom CSS classes/styles for the Go to next year button of the BitCalendar.
NextYearNavIcon string? null Custom CSS classes/styles for the Go to next year icon of the BitCalendar.
MonthsRow string? null Custom CSS classes/styles for each row of the months of the BitCalendar.
MonthButton string? null Custom CSS classes/styles for each month button of the BitCalendar.
YearPickerHeader string? null Custom CSS classes/styles for the year-picker's header of the BitCalendar.
MonthPickerToggleButton string? null Custom CSS classes/styles for the month-picker's toggle button of the BitCalendar.
YearPickerNavWrapper string? null Custom CSS classes/styles for the wrapper of the year-picker nav buttons of the BitCalendar.
PrevYearRangeNavButton string? null Custom CSS classes/styles for the Go to previous year-range button of the BitCalendar.
PrevYearRangeNavIcon string? null Custom CSS classes/styles for the Go to previous year-range icon of the BitCalendar.
NextYearRangeNavButton string? null Custom CSS classes/styles for the Go to next year-range button of the BitCalendar.
NextYearRangeNavIcon string? null Custom CSS classes/styles for the Go to next year-range icon of the BitCalendar.
YearsRow string? null Custom CSS classes/styles for each row of the years of the BitCalendar.
YearButton string? null Custom CSS classes/styles for each year button of the BitCalendar.
BitVisibility enum
Name
Value
Description
Visible 0 Show content of the component.
Hidden 1 Hide content of the component,though the space it takes on the page remains.
Collapsed 2 Hide content of the component,though the space it takes on the page gone.
BitTimeFormat enum
Name
Value
Description
TwentyFourHours 0 Show time pickers in 24 hours format.
TwelveHours 1 Show time pickers in 12 hours format.
BitVisibility enum
Name
Value
Description
Visible 0 The content of the component is visible.
Hidden 1 The content of the component is hidden, but the space it takes on the page remains (visibility:hidden).
Collapsed 2 The component is hidden (display:none).
BitDir enum
Name
Value
Description
Ltr 0 Ltr (left to right) is to be used for languages that are written from the left to the right (like English).
Rtl 1 Rtl (right to left) is to be used for languages that are written from the right to the left (like Arabic).
Auto 2 Auto lets the user agent decide. It uses a basic algorithm as it parses the characters inside the element until it finds a character with a strong directionality, then applies that directionality to the whole element.
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