docs-desktop/dotnet-desktop-guide/framework/winforms/controls/display-specific-days-in-bold-with-wf-monthcalendar-control.md

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Display Specific Days in Bold with MonthCalendar Control	03/30/2017	csharp vb cpp	calendars [Windows Forms], displaying dates in bold examples [Windows Forms], calendar controls GetDayBold event MonthCalendar control [Windows Forms], dates displayed in bold	8b20db5b-8118-4825-90e8-2c45c186ac7d

How to: Display Specific Days in Bold with the Windows Forms MonthCalendar Control

The Windows Forms xref:System.Windows.Forms.MonthCalendar control can display days in bold type, either as singular dates or on a repeating basis. You might do this to draw attention to special dates, such as holidays and weekends.

Three properties control this feature. The xref:System.Windows.Forms.MonthCalendar.BoldedDates%2A property contains single dates. The xref:System.Windows.Forms.MonthCalendar.AnnuallyBoldedDates%2A property contains dates that appear in bold every year. The xref:System.Windows.Forms.MonthCalendar.MonthlyBoldedDates%2A property contains dates that appear in bold every month. Each of these properties contains an array of xref:System.DateTime objects. To add or remove a date from one of these lists, you must add or remove a xref:System.DateTime object.

To make a date appear in bold type

1. Create the xref:System.DateTime objects.

   Dim myVacation1 As Date = New DateTime(2001, 6, 10)  
   Dim myVacation2 As Date = New DateTime(2001, 6, 17)  
   

   DateTime myVacation1 = new DateTime(2001, 6, 10);  
   DateTime myVacation2 = new DateTime(2001, 6, 17);  
   

   DateTime myVacation1 = DateTime(2001, 6, 10);  
   DateTime myVacation2 = DateTime(2001, 6, 17);  
   

2. Make a single date bold by calling the xref:System.Windows.Forms.MonthCalendar.AddBoldedDate%2A, xref:System.Windows.Forms.MonthCalendar.AddAnnuallyBoldedDate%2A, or xref:System.Windows.Forms.MonthCalendar.AddMonthlyBoldedDate%2A method of the xref:System.Windows.Forms.MonthCalendar control.

   MonthCalendar1.AddBoldedDate(myVacation1)  
   MonthCalendar1.AddBoldedDate(myVacation2)  
   

   monthCalendar1.AddBoldedDate(myVacation1);  
   monthCalendar1.AddBoldedDate(myVacation2);  
   

   monthCalendar1->AddBoldedDate(myVacation1);  
   monthCalendar1->AddBoldedDate(myVacation2);  
   

   –or–

   Make a set of dates bold all at once by creating an array of xref:System.DateTime objects and assigning it to one of the properties.

   Dim VacationDates As DateTime() = {myVacation1, myVacation2}  
   MonthCalendar1.BoldedDates = VacationDates  
   

   DateTime[] VacationDates = {myVacation1, myVacation2};  
   monthCalendar1.BoldedDates = VacationDates;  
   

   Array<DateTime>^ VacationDates = {myVacation1, myVacation2};  
   monthCalendar1->BoldedDates = VacationDates;  
   

To make a date appear in the regular font

1. Make a single bolded date appear in the regular font by calling the xref:System.Windows.Forms.MonthCalendar.RemoveBoldedDate%2A, xref:System.Windows.Forms.MonthCalendar.RemoveAnnuallyBoldedDate%2A, or xref:System.Windows.Forms.MonthCalendar.RemoveMonthlyBoldedDate%2A method.

   MonthCalendar1.RemoveBoldedDate(myVacation1)  
   MonthCalendar1.RemoveBoldedDate(myVacation2)  
   

   monthCalendar1.RemoveBoldedDate(myVacation1);  
   monthCalendar1.RemoveBoldedDate(myVacation2);  
   

   monthCalendar1->RemoveBoldedDate(myVacation1);  
   monthCalendar1->RemoveBoldedDate(myVacation2);  
   

   –or–

   Remove all the bolded dates from one of the three lists by calling the xref:System.Windows.Forms.MonthCalendar.RemoveAllBoldedDates%2A, xref:System.Windows.Forms.MonthCalendar.RemoveAllAnnuallyBoldedDates%2A, or xref:System.Windows.Forms.MonthCalendar.RemoveAllMonthlyBoldedDates%2A method.

   MonthCalendar1.RemoveAllBoldedDates()  
   

   monthCalendar1.RemoveAllBoldedDates();  
   

   monthCalendar1->RemoveAllBoldedDates();  
   

2. Update the appearance of the font by calling the xref:System.Windows.Forms.MonthCalendar.UpdateBoldedDates%2A method.

   MonthCalendar1.UpdateBoldedDates()  
   

   monthCalendar1.UpdateBoldedDates();  
   

   monthCalendar1->UpdateBoldedDates();  
   

See also

• MonthCalendar Control
• How to: Select a Range of Dates in the Windows Forms MonthCalendar Control
• How to: Change the Windows Forms MonthCalendar Control's Appearance
• How to: Display More than One Month in the Windows Forms MonthCalendar Control