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UpDownBase.PreferredHeight Property

Gets the height of the spin box (also known as an up-down control).

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

'Declaration
<BrowsableAttribute(False)> _
Public ReadOnly Property PreferredHeight As Integer

Property Value

Type: System.Int32
The height, in pixels, of the spin box.

The PreferredHeight property value is based on the PreferredHeight property of the text box portion of the control and is adjusted for the style of border.

The following code example uses the derived class NumericUpDown and sets some of its properties derived from UpDownBase. This code requires that you have a NumericUpDown control, two ComboBox controls, and three CheckBox controls created on a form. Label the ComboBox controls BorderStyle and TextAlign. Label the CheckBox controls InterceptArrowKeys, ReadOnly, and UpDownAlign. The code allows you to change the property values at run time and see how each affects the appearance and behavior of the spin box. Add the following items to the combo box labeled BorderStyle: None, Fixed3D, and FixedSingle. Add the following items to the combo box labeled TextAlign: Left, Right, and Center.

    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

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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