UpDownBase.PreferredHeight 屬性
定義
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
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 : intPublic ReadOnly Property PreferredHeight As Integer屬性值
微調方塊的高度 (單位為像素)。
- 屬性
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。