NumericUpDown コンストラクタ

NumericUpDown クラスの新しいインスタンスを初期化します。

Public Sub New()
[C#]
public NumericUpDown();
[C++]
public: NumericUpDown();
[JScript]
public function NumericUpDown();

使用例

NumericUpDown コントロールを作成および初期化し、一部の共通プロパティを設定し、これらのプロパティ値をユーザーが実行時に変更できるようにする例を次に示します。このコードは、フォーム上に 3 つの CheckBox コントロールが配置されていること、それらのコントロールの Click イベントのハンドラがインスタンス化されていることを前提にしています。 DecimalPlaces プロパティ、 ThousandsSeparator プロパティ、および Hexadecimal プロパティは、各チェック ボックスの Click イベント時に設定されます。

 
Public Sub InstantiateMyNumericUpDown()
    ' Create and initialize a NumericUpDown control.
    numericUpDown1 = New NumericUpDown()
    
    ' Dock the control to the top of the form.
    numericUpDown1.Dock = System.Windows.Forms.DockStyle.Top
    
    ' Set the Minimum, Maximum, and initial Value.
    numericUpDown1.Value = 5
    numericUpDown1.Maximum = 2500
    numericUpDown1.Minimum = - 100
    
    ' Add the NumericUpDown to the Form.
    Controls.Add(numericUpDown1)
End Sub    

' Check box to toggle decimal places to be displayed.
Private Sub checkBox1_Click(sender As Object, e As EventArgs)
    ' If DecimalPlaces is greater than 0, set them to 0 and round the
    ' current Value; otherwise, set DecimalPlaces to 2 and change the
    ' Increment to 0.25. 
    If numericUpDown1.DecimalPlaces > 0 Then
        numericUpDown1.DecimalPlaces = 0
        numericUpDown1.Value = Decimal.Round(numericUpDown1.Value, 0)
    Else
        numericUpDown1.DecimalPlaces = 2
        numericUpDown1.Increment = 0.25D
    End If
End Sub    

' Check box to toggle thousands separators to be displayed.
Private Sub checkBox2_Click(sender As Object, e As EventArgs)
    ' If ThousandsSeparator is true, set it to false;
    ' otherwise, set it to true. 
    If numericUpDown1.ThousandsSeparator Then
        numericUpDown1.ThousandsSeparator = False
    Else
        numericUpDown1.ThousandsSeparator = True
    End If
End Sub    

' Check box to toggle hexadecimal to be displayed.
Private Sub checkBox3_Click(sender As Object, e As EventArgs)
    ' If Hexadecimal is true, set it to false;
    ' otherwise, set it to true. 
    If numericUpDown1.Hexadecimal Then
        numericUpDown1.Hexadecimal = False
    Else
        numericUpDown1.Hexadecimal = True
    End If
End Sub


[C#] 
public void InstantiateMyNumericUpDown()
{
   // Create and initialize a NumericUpDown control.
   numericUpDown1 = new NumericUpDown();

   // Dock the control to the top of the form.
   numericUpDown1.Dock = System.Windows.Forms.DockStyle.Top;

   // Set the Minimum, Maximum, and initial Value.
   numericUpDown1.Value = 5;
   numericUpDown1.Maximum = 2500;
   numericUpDown1.Minimum = -100;
   
   // Add the NumericUpDown to the Form.
   Controls.Add(numericUpDown1);
}

// Check box to toggle decimal places to be displayed.
private void checkBox1_Click(Object sender,
                             EventArgs e)
{
   /* If DecimalPlaces is greater than 0, set them to 0 and round the 
      current Value; otherwise, set DecimalPlaces to 2 and change the 
      Increment to 0.25. */
   if (numericUpDown1.DecimalPlaces > 0)
   {
      numericUpDown1.DecimalPlaces = 0;
      numericUpDown1.Value = Decimal.Round(numericUpDown1.Value, 0);
   }
   else
   {
      numericUpDown1.DecimalPlaces = 2;
      numericUpDown1.Increment = 0.25M;
   }
}

// Check box to toggle thousands separators to be displayed.
private void checkBox2_Click(Object sender,
                             EventArgs e)
{   
   /* If ThousandsSeparator is true, set it to false; 
      otherwise, set it to true. */
   if (numericUpDown1.ThousandsSeparator)
   {
      numericUpDown1.ThousandsSeparator = false;
   }
   else
   {
      numericUpDown1.ThousandsSeparator = true;
   }
}

// Check box to toggle hexadecimal to be displayed.
private void checkBox3_Click(Object sender, 
                             EventArgs e)
{
   /* If Hexadecimal is true, set it to false; 
      otherwise, set it to true. */    
   if (numericUpDown1.Hexadecimal)
   {
      numericUpDown1.Hexadecimal = false;
   }
   else
   {
      numericUpDown1.Hexadecimal = true;
   }
}


[C++] 
public:
    void InstantiateMyNumericUpDown() {
        // Create and initialize a NumericUpDown control.
        numericUpDown1 = new NumericUpDown();
 
        // Dock the control to the top of the form.
        numericUpDown1->Dock = System::Windows::Forms::DockStyle::Top;
     
        // Set the Minimum, Maximum, and initial Value.
        numericUpDown1->Value = 5;
        numericUpDown1->Maximum = 2500;
        numericUpDown1->Minimum = -100;
        
        // Add the NumericUpDown to the Form.
        Controls->Add(numericUpDown1);
    };
 
    // Check box to toggle decimal places to be displayed.
private:
    void checkBox1_Click(Object *sender, EventArgs *e) {
        /* If DecimalPlaces is greater than 0, set them to 0 and round the 
        current Value; otherwise, set DecimalPlaces to 2 and change the 
        Increment to 0.25. */
        if (numericUpDown1->DecimalPlaces > 0) {
            numericUpDown1->DecimalPlaces = 0;
            numericUpDown1->Value = Decimal::Round(numericUpDown1->Value, 0);
        } else {
            numericUpDown1->DecimalPlaces = 2;
            numericUpDown1->Increment = 0.25;
        }
    };
 
    // Check box to toggle thousands separators to be displayed.
    void checkBox2_Click(Object *sender, EventArgs *e) {   
        /* If ThousandsSeparator is true, set it to false; 
        otherwise, set it to true. */
        if (numericUpDown1->ThousandsSeparator) {
            numericUpDown1->ThousandsSeparator = false;
        } else {
            numericUpDown1->ThousandsSeparator = true;
        }
    };
 
    // Check box to toggle hexadecimal to be displayed.
    void checkBox3_Click(Object *sender, EventArgs *e) {
        /* If Hexadecimal is true, set it to false; 
        otherwise, set it to true. */    
        if (numericUpDown1->Hexadecimal) {
            numericUpDown1->Hexadecimal = false;
        } else {
            numericUpDown1->Hexadecimal = true;
        }
    };
 

[JScript] 
function InstantiateMyNumericUpDown(){
  // Create and initialize a NumericUpDown control.
  numericUpDown1 = new NumericUpDown()
  
  // Dock the control to the top of the form.
  numericUpDown1.Dock = System.Windows.Forms.DockStyle.Top
  
  // Set the Minimum, Maximum, and initial Value.
  numericUpDown1.Value = 5
  numericUpDown1.Maximum = 2500
  numericUpDown1.Minimum = - 100
  
  // Add the NumericUpDown to the Form.
  Controls.Add(numericUpDown1)
}    

// Check box to toggle decimal places to be displayed.
function checkBox1_Click(sender : Object, e : EventArgs){
  // If DecimalPlaces is greater than 0, set them to 0 and round the
  // current Value; otherwise, set DecimalPlaces to 2 and change the
  // Increment to 0.25. 
  if(numericUpDown1.DecimalPlaces > 0){
    numericUpDown1.DecimalPlaces = 0
    numericUpDown1.Value = Decimal.Round(numericUpDown1.Value, 0)
  }else{
    numericUpDown1.DecimalPlaces = 2
    numericUpDown1.Increment = 0.25
  }
}    

// Check box to toggle thousands separators to be displayed.
function checkBox2_Click(sender : Object, e : EventArgs){
  // If ThousandsSeparator is true, set it to false;
  // otherwise, set it to true. 
  numericUpDown1.ThousandsSeparator = !numericUpDown1.ThousandsSeparator
}    

// Check box to toggle hexadecimal to be displayed.
function checkBox3_Click(sender : Object, e : EventArgs){
  // If Hexadecimal is true, set it to false;
  // otherwise, set it to true. 
  numericUpDown1.Hexadecimal = !numericUpDown1.Hexadecimal
}

必要条件

プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ, .NET Compact Framework - Windows CE .NET

参照

NumericUpDown クラス | NumericUpDown メンバ | System.Windows.Forms 名前空間 | UpDownBase