Upraviť

Zdieľať cez

DateRangeEventArgs Class

  • Reference

Definition

Namespace:
System.Windows.Forms
Assembly:
System.Windows.Forms.dll

Provides data for the DateChanged or DateSelected events of the MonthCalendar control.

public ref class DateRangeEventArgs : EventArgs
public class DateRangeEventArgs : EventArgs
type DateRangeEventArgs = class
    inherit EventArgs
Public Class DateRangeEventArgs
Inherits EventArgs
Inheritance
Object
EventArgs
DateRangeEventArgs

Examples

The following example displays a form containing a MonthCalendar control that displays one calendar year. The example demonstrates setting properties like BackColor, ForeColor, TitleBackColor, TitleForeColor, CalendarDimensions, and TrailingForeColor to customize the look of the calendar control. Other properties like AnnuallyBoldedDates, BoldedDates, and MonthlyBoldedDates are set to customize which dates are bolded. The example also sets properties to change the calendar format, including FirstDayOfWeek, MaxDate, MinDate, and MaxSelectionCount. The DateSelected and DateChanged events are also handled and their status displayed on the form.

#using <System.dll>
#using <System.Windows.Forms.dll>
#using <System.Drawing.dll>

using namespace System;
using namespace System::Drawing;
using namespace System::Windows::Forms;
public ref class Form1: public System::Windows::Forms::Form
{
private:
   System::Windows::Forms::MonthCalendar^ monthCalendar1;
   System::Windows::Forms::TextBox^ textBox1;

public:
   Form1()
   {
      this->textBox1 = gcnew System::Windows::Forms::TextBox;
      this->textBox1->BorderStyle = System::Windows::Forms::BorderStyle::FixedSingle;
      this->textBox1->Location = System::Drawing::Point( 48, 488 );
      this->textBox1->Multiline = true;
      this->textBox1->ReadOnly = true;
      this->textBox1->Size = System::Drawing::Size( 824, 32 );
      
      // Create the calendar.
      this->monthCalendar1 = gcnew System::Windows::Forms::MonthCalendar;
      
      // Set the calendar location.
      this->monthCalendar1->Location = System::Drawing::Point( 47, 16 );
      
      // Change the color.
      this->monthCalendar1->BackColor = System::Drawing::SystemColors::Info;
      this->monthCalendar1->ForeColor = System::Drawing::Color::FromArgb( ((System::Byte)(192)) ),((System::Byte)(0)),((System::Byte)(192));
      this->monthCalendar1->TitleBackColor = System::Drawing::Color::Purple;
      this->monthCalendar1->TitleForeColor = System::Drawing::Color::Yellow;
      this->monthCalendar1->TrailingForeColor = System::Drawing::Color::FromArgb( ((System::Byte)(192)) ),((System::Byte)(192)),((System::Byte)(0));
      
      // Add dates to the AnnuallyBoldedDates array.
      array<System::DateTime>^ temp1 = {System::DateTime( 2002, 4, 20, 0, 0, 0, 0 ),System::DateTime( 2002, 4, 28, 0, 0, 0, 0 ),System::DateTime( 2002, 5, 5, 0, 0, 0, 0 ),System::DateTime( 2002, 7, 4, 0, 0, 0, 0 ),System::DateTime( 2002, 12, 15, 0, 0, 0, 0 ),System::DateTime( 2002, 12, 18, 0, 0, 0, 0 )};
      this->monthCalendar1->AnnuallyBoldedDates = temp1;
      
      // Add dates to BoldedDates array.
      array<System::DateTime>^ temp2 = {System::DateTime( 2002, 9, 26, 0, 0, 0, 0 )};
      this->monthCalendar1->BoldedDates = temp2;
      
      // Add dates to MonthlyBoldedDates array.
      array<System::DateTime>^ temp5 = {System::DateTime( 2002, 1, 15, 0, 0, 0, 0 ),System::DateTime( 2002, 1, 30, 0, 0, 0, 0 )};
      this->monthCalendar1->MonthlyBoldedDates = temp5;
      
      // Configure the calendar to display 3 rows by 4 columns of months.
      this->monthCalendar1->CalendarDimensions = System::Drawing::Size( 4, 3 );
      
      // Set week to begin on Monday.
      this->monthCalendar1->FirstDayOfWeek = System::Windows::Forms::Day::Monday;
      
      // Set the maximum visible date on the calendar to 12/31/2010.
      this->monthCalendar1->MaxDate = System::DateTime( 2010, 12, 31, 0, 0, 0, 0 );
      
      // Set the minimum visible date on calendar to 12/31/2010.
      this->monthCalendar1->MinDate = System::DateTime( 1999, 1, 1, 0, 0, 0, 0 );
      
      // Only allow 21 days to be selected at the same time.
      this->monthCalendar1->MaxSelectionCount = 21;
      
      // Set the calendar to move one month at a time when navigating using the arrows.
      this->monthCalendar1->ScrollChange = 1;
      
      // Do not show the S"Today" banner.
      this->monthCalendar1->ShowToday = false;
      
      // Do not circle today's date.
      this->monthCalendar1->ShowTodayCircle = false;
      
      // Show the week numbers to the left of each week.
      this->monthCalendar1->ShowWeekNumbers = true;
      
      // Add event handlers for the DateSelected and DateChanged events
      this->monthCalendar1->DateSelected += gcnew System::Windows::Forms::DateRangeEventHandler( this, &Form1::monthCalendar1_DateSelected );
      this->monthCalendar1->DateChanged += gcnew System::Windows::Forms::DateRangeEventHandler( this, &Form1::monthCalendar1_DateChanged );
      
      // Set up how the form should be displayed and add the controls to the form.
      this->ClientSize = System::Drawing::Size( 920, 566 );
      array<System::Windows::Forms::Control^>^temp0 = {this->textBox1,this->monthCalendar1};
      this->Controls->AddRange( temp0 );
      this->Text = "Month Calendar Example";
   }


private:
   void monthCalendar1_DateSelected( Object^ /*sender*/, System::Windows::Forms::DateRangeEventArgs^ e )
   {
      
      // Show the start and end dates in the text box.
      this->textBox1->Text = String::Format( "Date Selected: Start = {0} : End = {1}", e->Start.ToShortDateString(), e->End.ToShortDateString() );
   }

   void monthCalendar1_DateChanged( Object^ /*sender*/, System::Windows::Forms::DateRangeEventArgs^ e )
   {
      
      // Show the start and end dates in the text box.
      this->textBox1->Text = String::Format( "Date Changed: Start = {0} : End = {1}", e->Start.ToShortDateString(), e->End.ToShortDateString() );
   }

};


[STAThread]
int main()
{
   Application::Run( gcnew Form1 );
}

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

public class Form1 : System.Windows.Forms.Form
{
    private System.Windows.Forms.MonthCalendar monthCalendar1;
    private System.Windows.Forms.TextBox textBox1;

    [STAThread]
    static void Main() 
    {
        Application.Run(new Form1());
    }

    public Form1()
    {
        this.textBox1 = new System.Windows.Forms.TextBox();
        this.textBox1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
        this.textBox1.Location = new System.Drawing.Point(48, 488);
        this.textBox1.Multiline = true;
        this.textBox1.ReadOnly = true;
        this.textBox1.Size = new System.Drawing.Size(824, 32);

        // Create the calendar.
        this.monthCalendar1 = new System.Windows.Forms.MonthCalendar();

        // Set the calendar location.
        this.monthCalendar1.Location = new System.Drawing.Point(47, 16);

        // Change the color.
        this.monthCalendar1.BackColor = System.Drawing.SystemColors.Info;
        this.monthCalendar1.ForeColor = System.Drawing.Color.FromArgb(
                                 ((System.Byte)(192)), ((System.Byte)(0)), ((System.Byte)(192)));
        this.monthCalendar1.TitleBackColor = System.Drawing.Color.Purple;
        this.monthCalendar1.TitleForeColor = System.Drawing.Color.Yellow;
        this.monthCalendar1.TrailingForeColor = System.Drawing.Color.FromArgb(
                                 ((System.Byte)(192)), ((System.Byte)(192)), ((System.Byte)(0)));

        // Add dates to the AnnuallyBoldedDates array.
        this.monthCalendar1.AnnuallyBoldedDates = 
            new System.DateTime[] { new System.DateTime(2002, 4, 20, 0, 0, 0, 0),
                                    new System.DateTime(2002, 4, 28, 0, 0, 0, 0),
                                    new System.DateTime(2002, 5, 5, 0, 0, 0, 0),
                                    new System.DateTime(2002, 7, 4, 0, 0, 0, 0),
                                    new System.DateTime(2002, 12, 15, 0, 0, 0, 0),
                                    new System.DateTime(2002, 12, 18, 0, 0, 0, 0)};

        // Add dates to BoldedDates array.
        this.monthCalendar1.BoldedDates = new System.DateTime[] {new System.DateTime(2002, 9, 26, 0, 0, 0, 0)};

        // Add dates to MonthlyBoldedDates array.
        this.monthCalendar1.MonthlyBoldedDates = 
           new System.DateTime[] {new System.DateTime(2002, 1, 15, 0, 0, 0, 0),
                                  new System.DateTime(2002, 1, 30, 0, 0, 0, 0)};

        // Configure the calendar to display 3 rows by 4 columns of months.
        this.monthCalendar1.CalendarDimensions = new System.Drawing.Size(4, 3);

        // Set week to begin on Monday.
        this.monthCalendar1.FirstDayOfWeek = System.Windows.Forms.Day.Monday;

        // Set the maximum visible date on the calendar to 12/31/2010.
        this.monthCalendar1.MaxDate = new System.DateTime(2010, 12, 31, 0, 0, 0, 0);

        // Set the minimum visible date on calendar to 12/31/2010.
        this.monthCalendar1.MinDate = new System.DateTime(1999, 1, 1, 0, 0, 0, 0);

        // Only allow 21 days to be selected at the same time.
        this.monthCalendar1.MaxSelectionCount = 21;

        // Set the calendar to move one month at a time when navigating using the arrows.
        this.monthCalendar1.ScrollChange = 1;

        // Do not show the "Today" banner.
        this.monthCalendar1.ShowToday = false;

        // Do not circle today's date.
        this.monthCalendar1.ShowTodayCircle = false;
            
        // Show the week numbers to the left of each week.
        this.monthCalendar1.ShowWeekNumbers = true;

        // Add event handlers for the DateSelected and DateChanged events
        this.monthCalendar1.DateSelected += new System.Windows.Forms.DateRangeEventHandler(this.monthCalendar1_DateSelected);
        this.monthCalendar1.DateChanged += new System.Windows.Forms.DateRangeEventHandler(this.monthCalendar1_DateChanged);

        // Set up how the form should be displayed and add the controls to the form.
        this.ClientSize = new System.Drawing.Size(920, 566);
        this.Controls.AddRange(new System.Windows.Forms.Control[] {this.textBox1, this.monthCalendar1});
        this.Text = "Month Calendar Example";
    }

    private void monthCalendar1_DateSelected(object sender, System.Windows.Forms.DateRangeEventArgs e)
    {
        // Show the start and end dates in the text box.
        this.textBox1.Text = "Date Selected: Start = " +
            e.Start.ToShortDateString() + " : End = " + e.End.ToShortDateString();
    }

    private void monthCalendar1_DateChanged(object sender, System.Windows.Forms.DateRangeEventArgs e)
    {
        // Show the start and end dates in the text box.
        this.textBox1.Text = "Date Changed: Start =  " +
            e.Start.ToShortDateString() + " : End = " + e.End.ToShortDateString();
    }
}

Imports System.Drawing
Imports System.Windows.Forms

Public NotInheritable Class Form1
    Inherits System.Windows.Forms.Form

    Friend WithEvents MonthCalendar1 As System.Windows.Forms.MonthCalendar
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox

    <System.STAThread()> _
    Public Shared Sub Main()
        System.Windows.Forms.Application.Run(New Form1)
    End Sub

    Public Sub New()
        MyBase.New()

        Me.TextBox1 = New System.Windows.Forms.TextBox
        Me.TextBox1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
        Me.TextBox1.Location = New System.Drawing.Point(48, 488)
        Me.TextBox1.Multiline = True
        Me.TextBox1.ReadOnly = True
        Me.TextBox1.Size = New System.Drawing.Size(824, 32)

        ' Create the calendar.
        Me.MonthCalendar1 = New System.Windows.Forms.MonthCalendar

        ' Set the calendar location.
        Me.MonthCalendar1.Location = New System.Drawing.Point(47, 16)

        ' Change the color.
        Me.MonthCalendar1.BackColor = System.Drawing.SystemColors.Info
        Me.MonthCalendar1.ForeColor = System.Drawing.Color.FromArgb( _
                                CType(192, System.Byte), CType(0, System.Byte), CType(192, System.Byte))
        Me.MonthCalendar1.TitleBackColor = System.Drawing.Color.Purple
        Me.MonthCalendar1.TitleForeColor = System.Drawing.Color.Yellow
        Me.MonthCalendar1.TrailingForeColor = System.Drawing.Color.FromArgb( _
                                CType(192, System.Byte), CType(192, System.Byte), CType(0, System.Byte))

        ' Add dates to the AnnuallyBoldedDates array.
        Me.MonthCalendar1.AnnuallyBoldedDates = New System.DateTime() _
                     {New System.DateTime(2002, 4, 20, 0, 0, 0, 0), _
                      New System.DateTime(2002, 4, 28, 0, 0, 0, 0), _
                      New System.DateTime(2002, 5, 5, 0, 0, 0, 0), _
                      New System.DateTime(2002, 7, 4, 0, 0, 0, 0), _
                      New System.DateTime(2002, 12, 15, 0, 0, 0, 0), _ 
                      New System.DateTime(2002, 12, 18, 0, 0, 0, 0)}

        ' Add dates to BoldedDates array.
        Me.MonthCalendar1.BoldedDates = New System.DateTime() {New System.DateTime(2002, 9, 26, 0, 0, 0, 0)}

        ' Add dates to MonthlyBoldedDates array.
        Me.MonthCalendar1.MonthlyBoldedDates = New System.DateTime() _
                     {New System.DateTime(2002, 1, 15, 0, 0, 0, 0), _
                      New System.DateTime(2002, 1, 30, 0, 0, 0, 0)}

        ' Configure the calendar to display 3 rows by 4 columns of months.
        Me.MonthCalendar1.CalendarDimensions = New System.Drawing.Size(4, 3)

        ' Set the week to begin on Monday.
        Me.MonthCalendar1.FirstDayOfWeek = System.Windows.Forms.Day.Monday

        ' Sets the maximum visible date on the calendar to 12/31/2010.
        Me.MonthCalendar1.MaxDate = New System.DateTime(2010, 12, 31, 0, 0, 0, 0)

        ' Set the minimum visible date on the calendar to 12/31/2010.
        Me.MonthCalendar1.MinDate = New System.DateTime(1999, 1, 1, 0, 0, 0, 0)

        ' Only allow 21 days to be selected at the same time.
        Me.MonthCalendar1.MaxSelectionCount = 21

        ' Set the calendar to move one month at a time when navigating using the arrows.
        Me.MonthCalendar1.ScrollChange = 1

        ' Do not show the "Today" banner.
        Me.MonthCalendar1.ShowToday = False

        ' Do not circle today's date.
        Me.MonthCalendar1.ShowTodayCircle = False

        ' Show the week numbers to the left of each week.
        Me.MonthCalendar1.ShowWeekNumbers = True

        ' Set up how the form should be displayed and add the controls to the form.
        Me.ClientSize = New System.Drawing.Size(920, 566)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.TextBox1, Me.MonthCalendar1})
        Me.Text = "Month Calendar Example"

    End Sub

    Private Sub monthCalendar1_DateSelected(ByVal sender As Object, _
                    ByVal e As System.Windows.Forms.DateRangeEventArgs) Handles MonthCalendar1.DateSelected

        ' Show the start and end dates in the text box.
        Me.TextBox1.Text = "Date Selected: Start = " + _
                e.Start.ToShortDateString() + " : End = " + e.End.ToShortDateString()
    End Sub

    Private Sub monthCalendar1_DateChanged(ByVal sender As Object, _
                    ByVal e As System.Windows.Forms.DateRangeEventArgs) Handles MonthCalendar1.DateChanged

        ' Show the start and end dates in the text box.
        Me.TextBox1.Text = "Date Changed: Start = " + _
                e.Start.ToShortDateString() + " : End = " + e.End.ToShortDateString()
    End Sub
End Class

Remarks

The DateChanged event occurs when the currently selected date or range of dates changes; for example, when the user explicitly changes a selection within the current month or when the selection is implicitly changed in response to next/previous month navigation. The DateSelected event occurs when the user explicitly changes a selection. The DateRangeEventArgs constructor specifies the start and end for the new date range that has been selected.

Note

If a single date is selected, the Start and End property values will be equal.

For more information about handling events, see Handling and Raising Events.

Constructors

DateRangeEventArgs(DateTime, DateTime)

Initializes a new instance of the DateRangeEventArgs class.

Properties

End

Gets the last date/time value in the range that the user has selected.
Start

Gets the first date/time value in the range that the user has selected.

Methods

Equals(Object)

Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode()

Serves as the default hash function.

(Inherited from Object)
GetType()

Gets the Type of the current instance.

(Inherited from Object)
MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
ToString()

Returns a string that represents the current object.

(Inherited from Object)

Applies to

See also