UpDownBase.UpDownAlign 属性

项目
08/17/2007

获取或设置数字显示框（也称为 up-down 控件）中向上和向下按钮的对齐方式。

**命名空间:**System.Windows.Forms
**程序集:**System.Windows.Forms（在 system.windows.forms.dll 中）

语法

声明
<LocalizableAttribute(True)> _
Public Property UpDownAlign As LeftRightAlignment
用法
Dim instance As UpDownBase
Dim value As LeftRightAlignment

value = instance.UpDownAlign

instance.UpDownAlign = value

[LocalizableAttribute(true)] 
public LeftRightAlignment UpDownAlign { get; set; }

[LocalizableAttribute(true)] 
public:
property LeftRightAlignment UpDownAlign {
    LeftRightAlignment get ();
    void set (LeftRightAlignment value);
}

/** @property */
public LeftRightAlignment get_UpDownAlign ()

/** @property */
public void set_UpDownAlign (LeftRightAlignment value)

public function get UpDownAlign () : LeftRightAlignment

public function set UpDownAlign (value : LeftRightAlignment)

属性值

LeftRightAlignment 值之一。默认值为 Right。

异常

异常类型	条件
InvalidEnumArgumentException	分配的值不是 LeftRightAlignment 值之一。

示例

下面的代码示例使用派生类 NumericUpDown，并设置它从 UpDownBase 派生的一些属性。此代码要求您在窗体上创建了一个名为 numericUpDown1 的 NumericUpDown 控件；两个分别名为 comboBox1 和 comboBox2 的 ComboBox 控件；和三个分别名为 checkBox1、checkBox2 和 checkBox2 的 CheckBox 控件。将以下各项添加到 comboBox1：None、Fixed3D 和 FixedSingle。将以下各项添加到 comboBox2：Left、Right 和 Center。

该代码允许您在运行时更改属性值并了解每个值对数字显示框的外观与行为的影响。

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

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;
     }
 }

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

void comboBox2_SelectedIndexChanged( Object^ sender, EventArgs^ e )
{
   // Set the TextAlign property.    
   if (  !String::Compare( comboBox2->Text, "Right" ) )
   {
      numericUpDown1->TextAlign = HorizontalAlignment::Right;
   }
   else
   if (  !String::Compare( comboBox1->Text, "Left" ) )
   {
      numericUpDown1->TextAlign = HorizontalAlignment::Left;
   }
   else
   if (  !String::Compare( comboBox1->Text, "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.
        if (comboBox1.get_Text().Equals("Fixed3D")) {
            numericUpDown1.set_BorderStyle(BorderStyle.Fixed3D);
        }
        else {
            if (comboBox1.get_Text().Equals("None")) {
                numericUpDown1.set_BorderStyle(BorderStyle.None);
            }
            else {
                if (comboBox1.get_Text().Equals("FixedSingle")) {
                    numericUpDown1.set_BorderStyle(BorderStyle.FixedSingle);
                }
            }
        }        
    }//comboBox1_SelectedIndexChanged
    
    private void comboBox2_SelectedIndexChanged(Object sender, EventArgs e)
    {
        // Set the TextAlign property.    
        if (comboBox2.get_Text().Equals("Right")) {
            numericUpDown1.set_TextAlign(HorizontalAlignment.Right);
        }
        else {
            if (comboBox2.get_Text().Equals("Left")) {
                numericUpDown1.set_TextAlign(HorizontalAlignment.Left);
            }
            else {
                if (comboBox2.get_Text().Equals("Center")) {
                    numericUpDown1.set_TextAlign(HorizontalAlignment.Center);
                }
            }
        }
    } //comboBox2_SelectedIndexChanged

    private void checkBox1_Click(Object sender, EventArgs e)
    {
        // Evaluate and toggle the ReadOnly property.
        if (numericUpDown1.get_ReadOnly()) {
            numericUpDown1.set_ReadOnly(false);
        }
        else {
            numericUpDown1.set_ReadOnly(true);
        }
    } //checkBox1_Click

    private void checkBox2_Click(Object sender, EventArgs e)
    {
        // Evaluate and toggle the InterceptArrowKeys property.
        if (numericUpDown1.get_InterceptArrowKeys()) {
            numericUpDown1.set_InterceptArrowKeys(false);
        }
        else {
            numericUpDown1.set_InterceptArrowKeys(true);
        }
    } //checkBox2_Click

    private void checkBox3_Click(Object sender, EventArgs e)
    {
        // Evaluate and toggle the UpDownAlign property.
        if (numericUpDown1.get_UpDownAlign().Equals(LeftRightAlignment.Left)) {
            numericUpDown1.set_UpDownAlign(LeftRightAlignment.Right);
        }
        else {
            numericUpDown1.set_UpDownAlign(LeftRightAlignment.Left );
        }
    } //checkBox3_Click
} //Form1

平台

Windows 98、Windows 2000 SP4、Windows CE、Windows Millennium Edition、Windows Mobile for Pocket PC、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：2.0、1.1、1.0

请参见

参考

UpDownBase 类
 UpDownBase 成员
 System.Windows.Forms 命名空间
 HorizontalAlignment 枚举

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UpDownBase.UpDownAlign 属性

语法

属性值

异常

示例

平台

版本信息

.NET Framework

请参见

参考

其他资源