DataTemplateSelector Class

Definition

public ref class DataTemplateSelector abstract : Microsoft::Maui::Controls::DataTemplate

public abstract class DataTemplateSelector : Microsoft.Maui.Controls.DataTemplate

type DataTemplateSelector = class
 inherit DataTemplate

Public MustInherit Class DataTemplateSelector
Inherits DataTemplate

Inheritance

Object

ElementTemplate

DataTemplate

DataTemplateSelector

Remarks

Application developers override the OnSelectTemplate(Object, BindableObject) method to return a unique DataTemplate for a data type and parent container combination. Additionally, because the same exact template instance must be returned for a given piece of data across successive calls to SelectTemplate(Object, BindableObject), developers should create and store these DataTemplate in their constructor overrides.

Developers should note the following items:

• OnSelectTemplate must not return another DataTemplateSelector, and :
• The Android platform is limited to 20 templates per list view.:

class MyDataTemplateSelector : DataTemplateSelector
{
 public MyDataTemplateSelector ()
 {
 // Retain instances
 this.templateOne = new DataTemplate (typeof (ViewA));
 this.templateTwo = new DataTemplate (typeof (ViewB));
 }

 protected override DataTemplate OnSelectTemplate (object item, BindableObject container)
 {
 if (item is double)
 return this.templateOne;
 return this.templateTwo;
 }

 private readonly DataTemplate templateOne;
 private readonly DataTemplate templateTwo;
}