UpDownBase.PreferredHeight 屬性

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

取得微調方塊 (也稱為上下按鈕控制項) 的高度。

public:
 property int PreferredHeight { int get(); };

[System.ComponentModel.Browsable(false)]
public int PreferredHeight { get; }

[<System.ComponentModel.Browsable(false)>]
member this.PreferredHeight : int

Public ReadOnly Property PreferredHeight As Integer

屬性值

Int32

微調方塊的高度 (單位為像素)。

屬性

BrowsableAttribute

範例

下列程式碼範例會使用衍生類別 NumericUpDown ，並設定衍生自 UpDownBase 的一些屬性。 此程式碼會要求您擁有在表單上建立的控制項、兩 ComboBox 個 NumericUpDown 控制項和三 CheckBox 個控制項。 標記 ComboBox 控制項 BorderStyle 和 TextAlign 。 標記 CheckBox 控制項 InterceptArrowKeys 、 ReadOnly 和 UpDownAlign 。 此程式碼可讓您在執行時間變更屬性值，並查看每個值如何影響微調方塊的外觀和行為。 將下列專案新增至標示為 BorderStyle 的下拉式方塊： None 、 Fixed3D 和 FixedSingle 。 將下列專案新增至標示為 TextAlign 的下拉式方塊： Left 、 Right 和 Center 。

void comboBox1_SelectedIndexChanged( Object^ /*sender*/, EventArgs^ /*e*/ )
{
   // Set the BorderStyle property.
   if ( comboBox1->Text->Equals( "Fixed3D" ) )
         numericUpDown1->BorderStyle = System::Windows::Forms::BorderStyle::Fixed3D;
   else
   if ( comboBox1->Text->Equals( "None" ) )
         numericUpDown1->BorderStyle = System::Windows::Forms::BorderStyle::None;
   else
   if ( comboBox1->Text->Equals( "FixedSingle" ) )
         numericUpDown1->BorderStyle = System::Windows::Forms::BorderStyle::FixedSingle;
}

void comboBox2_SelectedIndexChanged( Object^ /*sender*/, EventArgs^ /*e*/ )
{
   // Set the TextAlign property.    
   if ( comboBox2->Text->Equals( "Right" ) )
         numericUpDown1->TextAlign = HorizontalAlignment::Right;

   if ( comboBox2->Text->Equals( "Left" ) )
         numericUpDown1->TextAlign = HorizontalAlignment::Left;

   if ( comboBox2->Text->Equals( "Center" ) )
         numericUpDown1->TextAlign = HorizontalAlignment::Center;
}

void checkBox1_Click( Object^ /*sender*/, EventArgs^ /*e*/ )
{
   // Evaluate and toggle the ReadOnly property.
   if ( numericUpDown1->ReadOnly )
   {
      numericUpDown1->ReadOnly = false;
   }
   else
   {
      numericUpDown1->ReadOnly = true;
   }
}

void checkBox2_Click( Object^ /*sender*/, EventArgs^ /*e*/ )
{
   // Evaluate and toggle the InterceptArrowKeys property.
   if ( numericUpDown1->InterceptArrowKeys )
   {
      numericUpDown1->InterceptArrowKeys = false;
   }
   else
   {
      numericUpDown1->InterceptArrowKeys = true;
   }
}

void checkBox3_Click( Object^ /*sender*/, EventArgs^ /*e*/ )
{
   // Evaluate and toggle the UpDownAlign property.
   if ( numericUpDown1->UpDownAlign == LeftRightAlignment::Left )
   {
      numericUpDown1->UpDownAlign = LeftRightAlignment::Right;
   }
   else
   {
      numericUpDown1->UpDownAlign = LeftRightAlignment::Left;
   }
}

private void comboBox1_SelectedIndexChanged(Object sender, 
                                             EventArgs e)
 {
      // Set the BorderStyle property.
     switch(comboBox1.Text)
     {
         case "Fixed3D":
             numericUpDown1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
             break;
         case "None":
             numericUpDown1.BorderStyle = System.Windows.Forms.BorderStyle.None;
             break;
         case "FixedSingle":
             numericUpDown1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
             break;
     }
 }
 
 private void comboBox2_SelectedIndexChanged(Object sender, 
                                             EventArgs e)
 {
      // Set the TextAlign property.    
     switch (comboBox2.Text)
     {
         case "Right":
             numericUpDown1.TextAlign = HorizontalAlignment.Right;
             break;
         case "Left":
             numericUpDown1.TextAlign = HorizontalAlignment.Left;
             break;
         case "Center":
             numericUpDown1.TextAlign = HorizontalAlignment.Center;
             break;
     }
 }
 
 private void checkBox1_Click(Object sender, 
                              EventArgs e)
 {
      // Evaluate and toggle the ReadOnly property.
     if (numericUpDown1.ReadOnly)
     {
         numericUpDown1.ReadOnly = false;
     }
     else
     {
         numericUpDown1.ReadOnly = true;
     }
 }
 
 private void checkBox2_Click(Object sender, 
                              EventArgs e)
 {
      // Evaluate and toggle the InterceptArrowKeys property.
     if (numericUpDown1.InterceptArrowKeys)
     {  
         numericUpDown1.InterceptArrowKeys = false;
     }
     else
     {
         numericUpDown1.InterceptArrowKeys = true;
     }
 }
 
 private void checkBox3_Click(Object sender, 
                              EventArgs e)
 {
      // Evaluate and toggle the UpDownAlign property.
     if (numericUpDown1.UpDownAlign == LeftRightAlignment.Left)
     {
         numericUpDown1.UpDownAlign = LeftRightAlignment.Right;
     }
     else
     {
         numericUpDown1.UpDownAlign = LeftRightAlignment.Left;
     }
 }

Private Sub comboBox1_SelectedIndexChanged(sender As Object, e As EventArgs)
    ' Set the BorderStyle property.
    Select Case comboBox1.Text
        Case "Fixed3D"
            numericUpDown1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Case "None"
            numericUpDown1.BorderStyle = System.Windows.Forms.BorderStyle.None
        Case "FixedSingle"
            numericUpDown1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
    End Select
End Sub    

Private Sub comboBox2_SelectedIndexChanged(sender As Object, e As EventArgs)
    ' Set the TextAlign property.    
    Select Case comboBox2.Text
        Case "Right"
            numericUpDown1.TextAlign = HorizontalAlignment.Right
        Case "Left"
            numericUpDown1.TextAlign = HorizontalAlignment.Left
        Case "Center"
            numericUpDown1.TextAlign = HorizontalAlignment.Center
    End Select
End Sub    

Private Sub checkBox1_Click(sender As Object, e As EventArgs)
    ' Evaluate and toggle the ReadOnly property.
    If numericUpDown1.ReadOnly Then
        numericUpDown1.ReadOnly = False
    Else
        numericUpDown1.ReadOnly = True
    End If
End Sub    

Private Sub checkBox2_Click(sender As Object, e As EventArgs)
    ' Evaluate and toggle the InterceptArrowKeys property.
    If numericUpDown1.InterceptArrowKeys Then
        numericUpDown1.InterceptArrowKeys = False
    Else
        numericUpDown1.InterceptArrowKeys = True
    End If
End Sub    

Private Sub checkBox3_Click(sender As Object, e As EventArgs)
    ' Evaluate and toggle the UpDownAlign property.
    If numericUpDown1.UpDownAlign = LeftRightAlignment.Left Then
        numericUpDown1.UpDownAlign = LeftRightAlignment.Right
    Else
        numericUpDown1.UpDownAlign = LeftRightAlignment.Left
    End If
End Sub

備註

PreferredHeight屬性值是以控制項文字方塊部分的 屬性為基礎 PreferredHeight ，並且會針對框線樣式進行調整。

另請參閱

• PreferredHeight