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FrameworkElement::MinHeight Property

Gets or sets the minimum height constraint of the element. This is a dependency property.

Namespace:  System.Windows
Assembly:  PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation

[LocalizabilityAttribute(LocalizationCategory::None, Readability = Readability::Unreadable)]
property double MinHeight {
	double get ();
	void set (double value);
<object MinHeight="double"/>
- or -
<object MinHeight="qualifiedDouble"/>

XAML Values



String representation of a Double value equal to or greater than 0.0. This is interpreted as a device-independent unit (1/96th inch) measurement. Strings need not explicitly include decimal points. For instance a value of 1 is acceptable.

The same Double range restrictions as mentioned in the Property Value section apply.


A double value as described above, followed by one of the following unit declaration strings: px, in, cm, pt.

px (default) is device-independent units (1/96th inch per unit)

in is inches; 1in==96px

cm is centimeters; 1cm==(96/2.54) px

pt is points; 1pt==(96/72) px

Property Value

Type: System::Double
The minimum height of the element, in device-independent units (1/96th inch per unit). The default value is 0.0. This value can be any value equal to or greater than 0.0. However, PositiveInfinity is NOT valid, nor is Double::NaN.

Identifier field


Metadata properties set to true


This is one of three properties on FrameworkElement that specify height information. The other two are Height and MaxHeight. If there is a conflict between these values, the order of application for actual height determination is first MinHeight must be honored, then MaxHeight, and finally if each of these are within bounds, Height.

The value restrictions on the Double value are enforced by a ValidateValueCallback mechanism. If you attempt to set an invalid value, a run-time exception is thrown.

This example visually shows the differences in rendering behavior among the four height-related properties in Windows Presentation Foundation (WPF).

The FrameworkElement class exposes four properties that describe the height characteristics of an element. These four properties can conflict, and when they do, the value that takes precedence is determined as follows: the MinHeight value takes precedence over the MaxHeight value, which in turn takes precedence over the Height value. The fourth property, ActualHeight, is read-only.

The following Extensible Application Markup Language (XAML) examples draw a Rectangle element (rect1) as a child of Canvas. You can change the height properties of a Rectangle by using a series of ListBoxes that represent the property values of MinHeight, MaxHeight, and Height. In this manner, the precedence of each property is visually displayed.

<Canvas Height="200" MinWidth="200" Background="#b0c4de" VerticalAlignment="Top"  HorizontalAlignment="Center" Name="myCanvas" Margin="0,0,0,50">
    <Rectangle HorizontalAlignment="Center" Canvas.Top="50" Canvas.Left="50"  Name="rect1" Fill="#4682b4" Height="100" Width="100"/>


    <TextBlock Grid.Row="1" Grid.Column="0" Margin="10,0,0,0" TextWrapping="Wrap">Set the Rectangle Height:</TextBlock>
    <ListBox Grid.Column="1" Grid.Row="1" Margin="10,0,0,0" Height="50" Width="50" SelectionChanged="changeHeight">

	<TextBlock Grid.Row="1" Grid.Column="2" Margin="10,0,0,0" TextWrapping="Wrap">Set the Rectangle MinHeight:</TextBlock>
    <ListBox Grid.Column="3" Grid.Row="1" Margin="10,0,0,0" Height="50" Width="50" SelectionChanged="changeMinHeight">

    <TextBlock Grid.Row="1" Grid.Column="4" Margin="10,0,0,0" TextWrapping="Wrap">Set the Rectangle MaxHeight:</TextBlock>
    <ListBox Grid.Column="5" Grid.Row="1" Margin="10,0,0,0" Height="50" Width="50" SelectionChanged="changeMaxHeight">

The following code-behind examples handle the events that the SelectionChanged event raises. Each custom method takes the input from the ListBox, parses the value as a Double, and applies the value to the specified height-related property. The height values are also converted to a string and written to a TextBlock element named txt1.

No code example is currently available or this language may not be supported.

For the complete sample, see Height Properties Sample.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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

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