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knowledge-base/calendar-making-non-special-days-unselectable.md
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| --- | ||
| title: Making Non-Special Days Unselectable in RadCalendar | ||
| description: Learn how to make all non-special days unselectable in RadCalendar for ASP.NET AJAX. | ||
| type: how-to | ||
| page_title: How to Make Non-Special Days Unselectable in RadCalendar | RadCalendar for ASP.NET AJAX | ||
| slug: calendar-making-non-special-days-unselectable | ||
| tags: radcalendar, asp.net ajax, unselectable days, special days | ||
| res_type: kb | ||
| --- | ||
| # Environment | ||
| | Product | Version | | ||
| |---------|---------| | ||
| | RadCalendar for ASP.NET AJAX | all | | ||
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| ## Description | ||
| I want to make all non-special days unselectable in my RadCalendar for ASP.NET AJAX. Currently, I am able to iterate through a list of dates and create blue special days that are selectable. However, I need to figure out how to make every day that is NOT special unselectable. | ||
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| ## Solution | ||
| To make all non-special days unselectable in RadCalendar, you can apply the solution from the [Disabling calendar days article](https://docs.telerik.com/devtools/aspnet-ajax/knowledge-base/datepicker-disabling-calendar-days). This solution involves replacing the default cell content with a span element and modifying the appearance of the disabled days. Here's how you can apply it to your scenario: | ||
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| 1. Add the following JavaScript code to your ASPX page: | ||
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| ```javascript | ||
| <script type="text/javascript"> | ||
| // necessary to disable non-special days on client-side navigation | ||
| function OnDayRender(calendarInstance, args) { | ||
| // convert the date-triplet to a javascript date | ||
| var jsDate = new Date(args.get_date()[0], args.get_date()[1] - 1, args.get_date()[2]); | ||
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| // Check if the day is special | ||
| var specialDates = [new Date(2024, 4, 14), new Date(2024, 4, 20), new Date(2024, 5, 5)]; | ||
| var isSpecial = specialDates.some(function (date) { | ||
| return date.getTime() === jsDate.getTime(); | ||
| }); | ||
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| if (!isSpecial) { | ||
| var otherMonthCssClass = "rcOutOfRange"; | ||
| args.get_cell().className = otherMonthCssClass; | ||
| // replace the default cell content (anchor tag) with a span element | ||
| // that contains the processed calendar day number -- necessary for the calendar skinning mechanism | ||
| args.get_cell().innerHTML = "<span>" + args.get_date()[2] + "</span>"; | ||
| // disable selection and hover effect for the cell | ||
| args.get_cell().DayId = ""; | ||
| } | ||
| } | ||
| </script> | ||
| ``` | ||
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| 2. Modify your RadCalendar declaration in the ASPX page to include the `OnDayRender` client event handler: | ||
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| ```html | ||
| <telerik:RadCalendar ID="RadCalendar1" runat="server" AutoPostBack="true" EnableNavigation="True" NavigationCellPadding="10" EnableMultiSelect="false" RenderMode="lightweight" | ||
| OnDayRender="Calendar_OnDayRender"> | ||
| <FastNavigationSettings EnableTodayButtonSelection="true"></FastNavigationSettings> | ||
| <ClientEvents OnDayRender="OnDayRender" /> | ||
| </telerik:RadCalendar> | ||
| ``` | ||
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| 3. Add the following VB.NET code to your ASPX.VB code-behind file: | ||
| ```C# | ||
| private List<DateTime> GetSpecialDates() | ||
| { | ||
| return new List<DateTime> | ||
| { | ||
| new DateTime(2024, 5, 14), | ||
| new DateTime(2024, 5, 20), | ||
| new DateTime(2024, 6, 5) | ||
| }; | ||
| } | ||
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| protected void Page_Load(object sender, EventArgs e) | ||
| { | ||
| // necessary not to repeat the special days on postback | ||
| if (!Page.IsPostBack) | ||
| { | ||
| RadCalendar1.SpecialDays.Clear(); | ||
| } | ||
| } | ||
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| // necessary to disable all non-special days on first page load | ||
| protected void Calendar_OnDayRender(object sender, Telerik.Web.UI.Calendar.DayRenderEventArgs e) | ||
| { | ||
| // Get the list of special dates | ||
| List<DateTime> specialDates = GetSpecialDates(); | ||
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| // Check if the current date is in the special dates list | ||
| if (specialDates.Contains(e.Day.Date)) | ||
| { | ||
| // If it is a special date, make it selectable and style it | ||
| e.Day.IsSelectable = true; | ||
| e.Cell.BackColor = Color.Blue; | ||
| } | ||
| else | ||
| { | ||
| // If it is not a special date, make it non-selectable | ||
| e.Day.IsSelectable = false; | ||
| e.Cell.BackColor = Color.LightGray; // Optional: set a different color for non-selectable days | ||
| // Disable selection and hover effect for non-special days | ||
| string calendarSkin = RadCalendar1.Skin; | ||
| if (string.IsNullOrEmpty(calendarSkin)) | ||
| { | ||
| calendarSkin = "Default"; | ||
| } | ||
| string otherMonthCssClass = "rcOutOfRange"; | ||
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| // clear the default cell content (anchor tag) as we need to disable the hover effect for this cell | ||
| //e.Cell.Text = ""; | ||
| e.Cell.CssClass = otherMonthCssClass; // set new CssClass for the disabled calendar day cells (e.g. look like other month days here) | ||
| // render a span element with the processed calendar day number instead of the removed anchor -- necessary for the calendar skinning mechanism | ||
| Label label = new Label(); | ||
| label.Text = e.Day.Date.Day.ToString(); | ||
| //e.Cell.Controls.Add(label); | ||
| // disable the selection for the specific day | ||
| RadCalendarDay calendarDay = new RadCalendarDay(); | ||
| calendarDay.Date = e.Day.Date; | ||
| calendarDay.IsSelectable = false; | ||
| calendarDay.ItemStyle.CssClass = otherMonthCssClass; | ||
| RadCalendar1.SpecialDays.Add(calendarDay); | ||
| } | ||
| } | ||
| ``` | ||
| ```vb | ||
| Private Function GetSpecialDates() As List(Of DateTime) | ||
| Return New List(Of DateTime) From { | ||
| New DateTime(2024, 5, 14), | ||
| New DateTime(2024, 5, 20), | ||
| New DateTime(2024, 6, 5) | ||
| } | ||
| End Function | ||
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| Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load | ||
| ' necessary not to repeat the special days on postback | ||
| If Not Page.IsPostBack Then | ||
| RadCalendar1.SpecialDays.Clear() | ||
| End If | ||
| End Sub | ||
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| ' necessary to disable all non-special days on first page load | ||
| Protected Sub Calendar_OnDayRender(ByVal sender As Object, ByVal e As Telerik.Web.UI.Calendar.DayRenderEventArgs) | ||
| ' Get the list of special dates | ||
| Dim specialDates As List(Of DateTime) = GetSpecialDates() | ||
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| ' Check if the current date is in the special dates list | ||
| If specialDates.Contains(e.Day.Date) Then | ||
| ' If it is a special date, make it selectable and style it | ||
| e.Day.IsSelectable = True | ||
| e.Cell.BackColor = Drawing.Color.Blue | ||
| Else | ||
| ' If it is not a special date, make it non-selectable | ||
| e.Day.IsSelectable = False | ||
| e.Cell.BackColor = Drawing.Color.LightGray ' Optional: set a different color for non-selectable days | ||
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| ' Disable selection and hover effect for non-special days | ||
| Dim calendarSkin = RadCalendar1.Skin | ||
| If (calendarSkin = "") Then | ||
| calendarSkin = "Default" | ||
| End If | ||
| Dim otherMonthCssClass As String = "rcOutOfRange" | ||
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| ' clear the default cell content (anchor tag) as we need to disable the hover effect for this cell | ||
| 'e.Cell.Text = "" | ||
| e.Cell.CssClass = otherMonthCssClass ' set new CssClass for the disabled calendar day cells (e.g. look like other month days here) | ||
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| ' render a span element with the processed calendar day number instead of the removed anchor -- necessary for the calendar skinning mechanism | ||
| Dim label As Label = New Label | ||
| label.Text = e.Day.Date.Day.ToString | ||
| ' e.Cell.Controls.Add(label) | ||
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| ' disable the selection for the specific day | ||
| Dim calendarDay As RadCalendarDay = New RadCalendarDay | ||
| calendarDay.Date = e.Day.Date | ||
| calendarDay.IsSelectable = False | ||
| calendarDay.ItemStyle.CssClass = otherMonthCssClass | ||
| RadCalendar1.SpecialDays.Add(calendarDay) | ||
| End If | ||
| End Sub | ||
| ``` | ||
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| This code will disable all non-special days and style them accordingly in your RadCalendar. | ||
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