docs-desktop/dotnet-desktop-guide/framework/winforms/controls/how-to-change-monthcalendar-control-appearance.md

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title	ms.date	dev_langs	helpviewer_keywords	ms.assetid
Change MonthCalendar Control's Appearance	03/30/2017	csharp vb cpp	examples [Windows Forms], calendar controls MonthCalendar control [Windows Forms], formatting display	d09b95c9-e108-4608-9b31-b9100c0677bf

How to: Change the Windows Forms MonthCalendar Control's Appearance

The Windows Forms xref:System.Windows.Forms.MonthCalendar control allows you to customize the calendar's appearance in many ways. For example, you can set the color scheme and choose to display or hide week numbers and the current date.

To change the month calendar's color scheme

• Set properties such as xref:System.Windows.Forms.MonthCalendar.TitleBackColor%2A, xref:System.Windows.Forms.MonthCalendar.TitleForeColor%2A and xref:System.Windows.Forms.MonthCalendar.TrailingForeColor%2A. The xref:System.Windows.Forms.MonthCalendar.TitleBackColor%2A property also determines the font color for the days of the week. The xref:System.Windows.Forms.MonthCalendar.TrailingForeColor%2A property determines the color of the dates that precede and follow the displayed month or months.

  MonthCalendar1.TitleBackColor = System.Drawing.Color.Blue  
  MonthCalendar1.TrailingForeColor = System.Drawing.Color.Red  
  MonthCalendar1.TitleForeColor = System.Drawing.Color.Yellow  
  

  monthCalendar1.TitleBackColor = System.Drawing.Color.Blue;  
  monthCalendar1.TrailingForeColor = System.Drawing.Color.Red;  
  monthCalendar1.TitleForeColor = System.Drawing.Color.Yellow;  
  

  monthCalendar1->TitleBackColor = System::Drawing::Color::Blue;  
  monthCalendar1->TrailingForeColor = System::Drawing::Color::Red;  
  monthCalendar1->TitleForeColor = System::Drawing::Color::Yellow;  
  

  Note

  Starting with Windows Vista and depending on the theme, setting some properties might not change the appearance of the calendar. For example, if Windows is set to use the Aero theme, setting the xref:System.Windows.Forms.MonthCalendar.BackColor%2A, xref:System.Windows.Forms.MonthCalendar.TitleBackColor%2A, xref:System.Windows.Forms.MonthCalendar.TitleForeColor%2A, or xref:System.Windows.Forms.MonthCalendar.TrailingForeColor%2A properties has no effect. This is because an updated version of the calendar is rendered with an appearance that is derived at run time from the current operating system theme. If you want to use these properties and enable the earlier version of the calendar, you can disable visual styles for your application. Disabling visual styles might affect the appearance and behavior of other controls in your application. To disable visual styles in Visual Basic, open the Project Designer and uncheck the Enable XP visual styles check box. To disable visual styles in C#, open Program.cs and comment out Application.EnableVisualStyles();. For more information about visual styles, see Enabling Visual Styles.

To display the current date at the bottom of the control

• Set the xref:System.Windows.Forms.MonthCalendar.ShowToday%2A property to true. The example below toggles between displaying and omitting today's date when the form is double-clicked.

  Private Sub Form1_DoubleClick(ByVal sender As Object, _  
  ByVal e As System.EventArgs) Handles MyBase.DoubleClick  
     ' Toggle between True and False.  
     MonthCalendar1.ShowToday = Not MonthCalendar1.ShowToday  
  End Sub  
  

  private void Form1_DoubleClick(object sender, System.EventArgs e)  
  {  
     // Toggle between True and False.  
     monthCalendar1.ShowToday = !monthCalendar1.ShowToday;  
  }  
  

  private:  
     System::Void Form1_DoubleClick(System::Object ^  sender,  
        System::EventArgs ^  e)  
     {  
        // Toggle between True and False.  
        monthCalendar1->ShowToday = !monthCalendar1->ShowToday;  
     }  
  

  (Visual C#, Visual C++) Place the following code in the form's constructor to register the event handler.

  this.DoubleClick += new System.EventHandler(this.Form1_DoubleClick);  
  

  this->DoubleClick += gcnew System::EventHandler(this,  
     &Form1::Form1_DoubleClick);  
  

To display week numbers

• Set the xref:System.Windows.Forms.MonthCalendar.ShowWeekNumbers%2A property to true. You can set this property either in code or in the Properties window.

  Week numbers appear in a separate column to the left of the first day of the week.

  MonthCalendar1.ShowWeekNumbers = True  
  

  monthCalendar1.ShowWeekNumbers = true;  
  

  monthCalendar1->ShowWeekNumbers = true;  
  

See also

• MonthCalendar Control
• How to: Select a Range of Dates in the Windows Forms MonthCalendar Control
• How to: Display Specific Days in Bold with the Windows Forms MonthCalendar Control
• How to: Display More than One Month in the Windows Forms MonthCalendar Control