SelectionRange 建構函式

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

初始化 SelectionRange 類別的新實例。

多載

SelectionRange()	初始化 SelectionRange 類別的新實例。
SelectionRange(SelectionRange)	使用指定的選取範圍，初始化 SelectionRange 類別的新實例。
SelectionRange(DateTime, DateTime)	使用指定的開始和結束日期，初始化 SelectionRange 類別的新實例。

SelectionRange()

初始化 SelectionRange 類別的新實例。

public:
 SelectionRange();

public SelectionRange ();

Public Sub New ()

範例

下列範例會建立 SelectionRange 對象、設定其 Start 和 End 屬性，並將 SelectionRange 物件指派給 MonthCalendar 控件的 SelectionRange 屬性。 引發 DateChanged 事件時，文本框會顯示 Start 和 End 屬性值。 此範例假設您有一個具有兩個 TextBox 控件、Button和 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

備註

使用這個建構函式時，Start 和 End 值會設定為 null。

SelectionRange(SelectionRange)

使用指定的選取範圍，初始化 SelectionRange 類別的新實例。

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)

參數

range

SelectionRange

現有的 SelectionRange。

範例

下列範例會建立 SelectionRange 對象、設定其 Start 和 End 屬性，並將 SelectionRange 物件指派給 MonthCalendar 控件的 SelectionRange 屬性。 引發 DateChanged 事件時，文本框會顯示 Start 和 End 屬性值。 此範例假設您有一個具有兩個 TextBox 控件、Button和 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

備註

Start 和 End 屬性值會指派指派 SelectionRange 物件的 Start 和 End 屬性值。

另請參閱

• Start
• End

SelectionRange(DateTime, DateTime)

使用指定的開始和結束日期，初始化 SelectionRange 類別的新實例。

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)

參數

lower

DateTime

SelectionRange中的開始日期。

upper

DateTime

SelectionRange中的結束日期。

範例

下列範例會根據按兩下 Button 時輸入兩個 TextBox 控件的兩個日期，設定 MonthCalendar 控件的 SelectionRange 屬性。 此程式代碼假設 MonthCalendar 控件的新實例、兩個 TextBox 控件，以及已在 Form上建立 Button。 您可以考慮新增程式碼來驗證指派給文字框的 Text，以確認它們是否包含有效的日期。

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

備註

注意

如果 lowerDateTime 值大於 upperDateTime 值，則會將 lower 值指派給 End 屬性，而不是 Start 屬性。

另請參閱

• Start
• End