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)

public:
[BrowsableAttribute(false)]
property int PreferredHeight {
	int 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.

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;
   }
}

.NET Framework
Available since 1.1
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