SelectionRange 构造函数

参考

定义

命名空间:: System.Windows.Forms

程序集:: System.Windows.Forms.dll

重要

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初始化 SelectionRange 类的新实例。

重载

SelectionRange()	初始化 SelectionRange 类的新实例。
SelectionRange(SelectionRange)	使用指定的选择范围初始化 SelectionRange 类的新实例。
SelectionRange(DateTime, DateTime)	使用指定的开始和结束日期初始化 SelectionRange 类的新实例。

SelectionRange()

初始化 SelectionRange 类的新实例。

public:
 SelectionRange();

public SelectionRange ();

Public Sub New ()

示例

以下示例创建一个 SelectionRange 对象，设置其 Start 和 End 属性，并将 SelectionRange 对象分配给 MonthCalendar 控件的 SelectionRange 属性。引发 DateChanged 事件时，文本框中会显示 Start 和 End 属性值。此示例假定你有一个具有两个 TextBox 控件、一个 Button和一个 MonthCalendar 控件的 Form。

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

注解

使用此构造函数时，Start 和 End 值设置为 null。

适用于

SelectionRange(SelectionRange)

使用指定的选择范围初始化 SelectionRange 类的新实例。

public:
 SelectionRange(System::Windows::Forms::SelectionRange ^ range);

public SelectionRange (System.Windows.Forms.SelectionRange range);

new System.Windows.Forms.SelectionRange : System.Windows.Forms.SelectionRange -> System.Windows.Forms.SelectionRange

Public Sub New (range As SelectionRange)

参数

range: SelectionRange

现有的 SelectionRange。

示例

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

注解

为 Start 和 End 属性值分配了分配 SelectionRange 对象的 Start 和 End 属性值。

另请参阅

Start
End

适用于

SelectionRange(DateTime, DateTime)

使用指定的开始和结束日期初始化 SelectionRange 类的新实例。

public:
 SelectionRange(DateTime lower, DateTime upper);

public SelectionRange (DateTime lower, DateTime upper);

new System.Windows.Forms.SelectionRange : DateTime * DateTime -> System.Windows.Forms.SelectionRange

Public Sub New (lower As DateTime, upper As DateTime)

参数

lower: DateTime

SelectionRange中的开始日期。

upper: DateTime

SelectionRange中的结束日期。

示例

以下示例根据单击 Button 时输入两个 TextBox 控件的两个日期设置 MonthCalendar 控件的 SelectionRange 属性。此代码假定在 Form上创建了一个 MonthCalendar 控件、两个 TextBox 控件和一个 Button 的新实例。可以考虑添加代码来验证分配给文本框的 Text，以验证它们是否包含有效日期。

private:
   void button1_Click( Object^ sender, EventArgs^ e )
   {
      // Set the SelectionRange with start and end dates from text boxes.
      try
      {
         monthCalendar1->SelectionRange = gcnew SelectionRange(
            DateTime::Parse( textBox1->Text ),
            DateTime::Parse( textBox2->Text ) );
      }
      catch ( Exception^ ex ) 
      {
         MessageBox::Show( ex->Message );
      }
   }

private void button1_Click(object sender,
                           EventArgs e)
{
   // Set the SelectionRange with start and end dates from text boxes.
   try
   {
      monthCalendar1.SelectionRange = new SelectionRange(
        DateTime.Parse(textBox1.Text),
        DateTime.Parse(textBox2.Text));
   }
   catch(Exception ex)
   {
      MessageBox.Show(ex.Message);
   }
}

Private Sub button1_Click(sender As Object, e As EventArgs)
   ' Set the SelectionRange with start and end dates from text boxes.
   Try
      monthCalendar1.SelectionRange = New SelectionRange( _
        DateTime.Parse(textBox1.Text), _
        DateTime.Parse(textBox2.Text))
   Catch ex As Exception
      MessageBox.Show(ex.Message)
   End Try
End Sub

注解

注意

如果 lowerDateTime 值大于 upperDateTime 值，则 lower 值将分配给 End 属性而不是 Start 属性。

另请参阅

Start
End

适用于

通过

SelectionRange 构造函数

定义

重载

SelectionRange()

示例

注解

适用于

SelectionRange(SelectionRange)

参数

示例

注解

另请参阅

适用于

SelectionRange(DateTime, DateTime)

参数

示例

注解

另请参阅

适用于

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