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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)
[BrowsableAttribute(false)]
public int PreferredHeight { get; }

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 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;
     }
 }

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
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