DateTimePicker Event and selected value : DateTimePicker : GUI Windows Forms C# Examples

    
using  System;
using  System.Drawing;
using  System.Windows.Forms;

public  class  Calendar  :  Form
{
    MonthCalendar  mc;
    DateTimePicker  dtpStart;        
    DateTimePicker  dtpEnd;        
    DateTimePicker  dtpBold;        
    Label  lblStart;
    Label  lblEnd;
    Label  lblStartDay;
    Label  lblBold;
    ComboBox  cmbStart;
    Button  btnBoldDay;
    Button  btnBoldMonthly;
    Button  btnBoldAnnually;

    public  Calendar()
    {
        Size  =  new  Size(650,450);
        this.Load  +=  new  EventHandler(this_Load);

        mc  =  new  MonthCalendar();
        mc.Parent  =  this;
        mc.Location  =  new  Point(20,20);
        mc.Font  =  new  Font("Times  New  Roman",  14);
        mc.CalendarDimensions  =  new  Size(2,1);
        mc.FirstDayOfWeek  =  Day.Monday;
        mc.MaxSelectionCount  =  45;
        mc.DateChanged  +=  new  DateRangeEventHandler(mc_DateChanged);
        mc.DateSelected  +=  new  DateRangeEventHandler(mc_DateSelected);

        lblStart  =  new  Label();
        lblStart.Parent  =  this;
        lblStart.Text  =  "Start  Date:";
        
        dtpStart  =  new  DateTimePicker();
        dtpStart.Parent  =  this;
        dtpStart.Size  =  new  Size((int)(Font.Height  *  .6)  *  
                            dtpStart.Value.ToString("D").Length,
                            dtpStart.PreferredHeight);
        dtpStart.Format  =  DateTimePickerFormat.Long;
        dtpStart.ShowUpDown  =  true;
        dtpStart.ValueChanged  +=  new  EventHandler(dtpStart_ValueChanged);

        lblEnd  =  new  Label();
        lblEnd.Parent  =  this;
        lblEnd.Text  =  "End  Date:";
        
        dtpEnd  =  new  DateTimePicker();
        dtpEnd.Parent  =  this;
        dtpEnd.Size  =  new  Size((int)(Font.Height  *  .6)  *  
                            dtpEnd.Value.ToString("D").Length,
                            dtpEnd.PreferredHeight);
        dtpEnd.Format  =  DateTimePickerFormat.Long;
        dtpEnd.ShowUpDown  =  true;
        dtpEnd.ValueChanged  +=  new  EventHandler(dtpEnd_ValueChanged);
                
        lblStartDay  =  new  Label();
        lblStartDay.Parent  =  this;
        lblStartDay.Text  =  "Start  Day:";
        
        cmbStart  =  new  ComboBox();
        cmbStart.Parent  =  this;
        cmbStart.DropDownStyle  =  ComboBoxStyle.DropDownList;
        cmbStart.Items.AddRange(new  object[]  {"Monday",  
                                            "Tuesday",  
                                            "Wednesday",  
                                            "Thursday",  
                                            "Friday",  
                                            "Saturday",  
                                            "Sunday"});
        cmbStart.SelectedIndex  =  0;
        cmbStart.SelectedIndexChanged  +=  new  EventHandler(cmbStart_SelectedIndexChanged);
        
        lblBold  =  new  Label();
        lblBold.Parent  =  this;
        lblBold.Text  =  "Bold  Day:";
        
        dtpBold  =  new  DateTimePicker();
        dtpBold.Parent  =  this;
        dtpBold.Size  =  new  Size((int)(Font.Height  )  *  
                            dtpBold.Value.ToString("d").Length,
                            dtpBold.PreferredHeight);
        dtpBold.Format  =  DateTimePickerFormat.Short;
        dtpBold.ShowUpDown  =  true;
        
        btnBoldDay  =  new  Button();
        btnBoldDay.Parent  =  this;
        btnBoldDay.Text  =  "Add  Bold  Day";
        btnBoldDay.Size  =  new  Size((int)(Font.Height  *  .6)  *  
                                btnBoldDay.Text.Length,
                                (int)(Font.Height  *  1.75));
        btnBoldDay.Click  +=  new  EventHandler(btnBoldDay_Click);
        
        btnBoldMonthly  =  new  Button();
        btnBoldMonthly.Parent  =  this;
        btnBoldMonthly.Text  =  "Add  Bold  Day  Monthly";
        btnBoldMonthly.Size  =  new  Size((int)(Font.Height  *  .6)  *  
                                    btnBoldMonthly.Text.Length,
                                    (int)(Font.Height  *  1.75));
        btnBoldMonthly.Click  +=  new  EventHandler(btnBoldMonthly_Click);

        btnBoldAnnually  =  new  Button();
        btnBoldAnnually.Parent  =  this;
        btnBoldAnnually.Text  =  "Add  Bold  Day  Annually";
        btnBoldAnnually.Size  =  new  Size((int)(Font.Height  *  .6)  *  
                                        btnBoldAnnually.Text.Length,
                                        (int)(Font.Height  *  1.75));
        btnBoldAnnually.Click  +=  new  EventHandler(btnBoldAnnually_Click);
    }

    static  void  Main()  
    {
        Application.Run(new  Calendar());
    }

    private  void  this_Load(object  sender,  EventArgs  e)
    {
        lblStart.Location  =  new  Point(mc.Left,  mc.Bottom  +  10);
        dtpStart.Location  =  new  Point(lblStart.Right,  mc.Bottom  +  10);

        lblEnd.Location  =  new  Point(mc.Left,  lblStart.Bottom  +  5);
        dtpEnd.Location  =  new  Point(lblStart.Right,  lblStart.Bottom  +  5);
        
        lblStartDay.Location  =  new  Point(mc.Left,  lblEnd.Bottom  +  5);
        cmbStart.Location  =  new  Point(lblStart.Right,  lblEnd.Bottom  +  5);

        lblBold.Location  =  new  Point(mc.Left,  lblStartDay.Bottom  +  5);
        dtpBold.Location  =  new  Point(lblBold.Right,  
                                    lblStartDay.Bottom  +  5);
        
        btnBoldDay.Location  =  new  Point(dtpBold.Right  +  10,  dtpBold.Top);
        btnBoldMonthly.Location  =  new  Point(btnBoldDay.Right,  
                                            dtpBold.Top);
        btnBoldAnnually.Location  =  new  Point(btnBoldMonthly.Right,  
                                            dtpBold.Top);
    }

    private  void  dtpStart_ValueChanged(object  sender,  EventArgs  e)
    {
        mc.SelectionStart  =  dtpStart.Value;
    }        

    private  void  dtpEnd_ValueChanged(object  sender,  EventArgs  e)
    {
        mc.SelectionEnd  =  dtpEnd.Value;
    }        

    private  void  mc_DateChanged(object  sender,  DateRangeEventArgs  e)
    {
        MessageBox.Show("DateChanged");
        dtpStart.Value  =  e.Start;
        dtpEnd.Value  =  e.End;
    }

    private  void  mc_DateSelected(object  sender,  DateRangeEventArgs  e)
    {
        MessageBox.Show("DateSelected");
    }

    private  void  cmbStart_SelectedIndexChanged(object  sender,  
                                                EventArgs  e)
    {
        mc.FirstDayOfWeek  =  (Day)cmbStart.SelectedIndex;
    }

    private  void  btnBoldDay_Click(object  sender,  EventArgs  e)
    {
        mc.AddBoldedDate(dtpBold.Value);
        mc.UpdateBoldedDates();
    }

    private  void  btnBoldMonthly_Click(object  sender,  EventArgs  e)
    {
        mc.AddMonthlyBoldedDate(dtpBold.Value);
        mc.UpdateBoldedDates();
    }

    private  void  btnBoldAnnually_Click(object  sender,  EventArgs  e)
    {
        mc.AddAnnuallyBoldedDate(dtpBold.Value);
        mc.UpdateBoldedDates();
    }
}