Represents the length of elements that explicitly support Star unit types.
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
The GridLength type exposes the following members.
| Name | Description | |
|---|---|---|
 | GridLength(Double) | Initializes a new instance of the GridLength structure using the specified absolute value in pixels. |
| GridLength(Double, GridUnitType) | Initializes a new instance of the GridLength structure and specifies what kind of value it holds. |
| Name | Description | |
|---|---|---|
| Auto | Gets an instance of GridLength that holds a value whose size is determined by the size properties of the content object. |
| GridUnitType | Gets the associated GridUnitType for the GridLength. |
| IsAbsolute | Gets a value that indicates whether the GridLength holds a value that is expressed in pixels. |
| IsAuto | Gets a value that indicates whether the GridLength holds a value whose size is determined by the size properties of the content object. |
| IsStar | Gets a value that indicates whether the GridLength holds a value that is expressed as a weighted proportion of available space. |
| Value | Gets a Double that represents the value of the GridLength. |
| Name | Description | |
|---|---|---|
| Equals(GridLength) | Determines whether the specified GridLength is equal to the current GridLength. |
| Equals(Object) | Determines whether the specified object is equal to the current GridLength instance. (Overrides ValueType.Equals(Object).) |
| GetHashCode | Gets a hash code for the GridLength. (Overrides ValueType.GetHashCode().) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| ToString | Returns a String representation of the GridLength. (Overrides ValueType.ToString().) |
| Name | Description | |
|---|---|---|
| Equality | Compares two GridLength structures for equality. |
| Inequality | Compares two GridLength structures to determine if they are not equal. |
Elements such as ColumnDefinition and RowDefinition use this type to describe width and height in order to support variable distribution of available space.
The following example shows how to create and use an instance of GridLengthConverter. The example defines a custom method called changeCol, which passes the ListBoxItem to a GridLengthConverter that converts the Content of a ListBoxItem to an instance of GridLength. The converted value is then passed back as the value of the Width property of the ColumnDefinition element.
The example also defines a second custom method, called changeColVal. This custom method converts the Value of a Slider to a String and then passes that value back to the ColumnDefinition as the Width of the element.
Note that a separate Extensible Application Markup Language (XAML) file defines the contents of a ListBoxItem.
private void changeColVal(object sender, RoutedEventArgs e)
{
txt1.Text = "Current Grid Column is " + hs1.Value.ToString();
}
private void changeCol(object sender, SelectionChangedEventArgs args)
{
ListBoxItem li = ((sender as ListBox).SelectedItem as ListBoxItem);
GridLengthConverter myGridLengthConverter = new GridLengthConverter();
if (hs1.Value == 0)
{
GridLength gl1 = (GridLength)myGridLengthConverter.ConvertFromString(li.Content.ToString());
col1.Width = gl1;
}
else if (hs1.Value == 1)
{
GridLength gl2 = (GridLength)myGridLengthConverter.ConvertFromString(li.Content.ToString());
col2.Width = gl2;
}
else if (hs1.Value == 2)
{
GridLength gl3 = (GridLength)myGridLengthConverter.ConvertFromString(li.Content.ToString());
col3.Width = gl3;
}
}
More Code
| How to: Build a Standard UI Dialog Box by Using Grid | This example shows how to create a standard user interface (UI) dialog box by using the Grid element. |
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
