Xamarin.Forms.Core 1.0.0.0 1.1.0.0 1.2.0.0 1.3.0.0 1.4.0.0 1.5.0.0 2.0.0.0 Xamarin.Forms.DefinitionCollection<Xamarin.Forms.ColumnDefinition> Xamarin.Forms.ColumnDefinition A for s. App developers can specify values for the property in XAML by nesting ColumnDefinition tags inside tags for the collection property. The following example demonstrates setting three column widths to each of the three valid values: ]]> Constructor 1.0.0.0 1.1.0.0 1.2.0.0 1.3.0.0 1.4.0.0 1.5.0.0 2.0.0.0 Creates a new empty collection. To be added.