MonthCalendar.DateChanged 事件
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
当 MonthCalendar 中的所选日期更改时发生。
public:
event System::Windows::Forms::DateRangeEventHandler ^ DateChanged;public event System.Windows.Forms.DateRangeEventHandler DateChanged;public event System.Windows.Forms.DateRangeEventHandler? DateChanged;member this.DateChanged : System.Windows.Forms.DateRangeEventHandler Public Custom Event DateChanged As DateRangeEventHandler 事件类型
示例
下面的代码示例创建 ， SelectionRange设置其 Start 和 End 属性，并将 分配给 SelectionRangeSelectionRange 控件的 MonthCalendar 属性。 DateChanged引发 事件时，Start和 End 属性值将显示在文本框中。 此示例要求具有具有两TextBox个Form控件的 ， Button和 MonthCalendar 控件。
private:
void button1_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
// Create a SelectionRange object and set its Start and End properties.
SelectionRange^ sr = gcnew SelectionRange;
sr->Start = DateTime::Parse( this->textBox1->Text );
sr->End = DateTime::Parse( this->textBox2->Text );
/* Assign the SelectionRange object to the
SelectionRange property of the MonthCalendar control. */
this->monthCalendar1->SelectionRange = sr;
}
void monthCalendar1_DateChanged( Object^ /*sender*/, DateRangeEventArgs^ /*e*/ )
{
/* Display the Start and End property values of
the SelectionRange object in the text boxes. */
this->textBox1->Text = monthCalendar1->SelectionRange->Start.Date.ToShortDateString();
this->textBox2->Text = monthCalendar1->SelectionRange->End.Date.ToShortDateString();
}
private void button1_Click(object sender, System.EventArgs e)
{
// Create a SelectionRange object and set its Start and End properties.
SelectionRange sr = new SelectionRange();
sr.Start = DateTime.Parse(this.textBox1.Text);
sr.End = DateTime.Parse(this.textBox2.Text);
/* Assign the SelectionRange object to the
SelectionRange property of the MonthCalendar control. */
this.monthCalendar1.SelectionRange = sr;
}
private void monthCalendar1_DateChanged(object sender, DateRangeEventArgs e)
{
/* Display the Start and End property values of
the SelectionRange object in the text boxes. */
this.textBox1.Text =
monthCalendar1.SelectionRange.Start.Date.ToShortDateString();
this.textBox2.Text =
monthCalendar1.SelectionRange.End.Date.ToShortDateString();
}
Private Sub button1_Click(sender As Object, _
e As EventArgs) Handles button1.Click
' Create a SelectionRange object and set its Start and End properties.
Dim sr As New SelectionRange()
sr.Start = DateTime.Parse(Me.textBox1.Text)
sr.End = DateTime.Parse(Me.textBox2.Text)
' Assign the SelectionRange object to the
' SelectionRange property of the MonthCalendar control.
Me.monthCalendar1.SelectionRange = sr
End Sub
Private Sub monthCalendar1_DateChanged(sender As Object, _
e As DateRangeEventArgs) Handles monthCalendar1.DateChanged
' Display the Start and End property values of
' the SelectionRange object in the text boxes.
Me.textBox1.Text = monthCalendar1.SelectionRange.Start.Date.ToShortDateString()
Me.textBox2.Text = monthCalendar1.SelectionRange.End.Date.ToShortDateString()
End Sub
下面的代码示例显示一个窗体，其中包含 MonthCalendar 显示一个日历年的控件。 该示例演示如何设置 BackColor、、ForeColor、CalendarDimensionsTitleBackColorTitleForeColor、 和 TrailingForeColor 属性以自定义日历控件的外观。 其他属性（如 AnnuallyBoldedDates、 BoldedDates和 MonthlyBoldedDates ）设置为自定义哪些日期为粗体。 该示例还设置 FirstDayOfWeek、 MaxDate、 MinDate和 MaxSelectionCount 属性以更改日历格式。 DateSelected还会处理 和 DateChanged 事件，并在窗体上显示其状态。
#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
注解
事件 DateChanged 发生在任何日期选择期间，无论是通过鼠标、键盘还是代码。 事件 DateSelected 类似，但它仅在使用鼠标进行的日期选择结束时发生。
有关处理事件的详细信息，请参阅 处理和引发事件。
