DateRangeEventHandler 代理人

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

來源:

DateRangeEventHandler.cs

表示處理 DateChanged 的 DateSelected 或 MonthCalendar 事件的方法。

C#

public delegate void DateRangeEventHandler(object? sender, DateRangeEventArgs e);

參數

sender

Object

事件的來源。

e

DateRangeEventArgs

DateRangeEventArgs，其中包含事件資料。

範例

下列範例會顯示一個表單，其中包含顯示一個 MonthCalendar 日曆年度的控制項。 此範例示範如何設定 、 ForeColor 、 TitleBackColor 、 TitleForeColor 、 CalendarDimensions 和 TrailingForeColor 等 BackColor 屬性，以自訂行事曆控制項的外觀。 、 和 MonthlyBoldedDates 等其他 AnnuallyBoldedDatesBoldedDates 屬性會設定為自訂哪些日期為粗體。 此範例也會設定屬性來變更行事曆格式，包括 FirstDayOfWeek 、 MaxDateMinDate 和 MaxSelectionCount 。 也會 DateSelected 處理 和 DateChanged 事件，並在表單上顯示其狀態。

C#

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();
    }
}

備註

建立 DateRangeEventArgs 委派時，必須識別處理事件的方法。 若要使事件與您的事件處理常式產生關聯，請將委派的執行個體 (Instance) 加入至事件。 除非您移除委派，否則每當事件發生時就會呼叫事件處理常式。 如需事件處理常式委派的詳細資訊，請參閱 處理和引發事件。

擴充方法

適用於

另請參閱

• DateRangeEventArgs
• MonthCalendar