MAUI 触发器之事件触发器 MAUI 中的事件触发器是一种用于在控件上触发事件并执行指定操作的机制。事件触发器可以通过与控件关联的事件或命令来触发操作,例如单击按钮、选择列表项等等。事件触发器可以用于各种 MAUI 控件,包括 Button、Entry、ListView、Picker 等等。 事件触发器可以用于实现各种复杂的交互效果,例如弹出对...
<Entry.Triggers>//在Triggers集合中,增加EventTrigger事件触发器<EventTrigger Event="TextChanged">//当TextChanged事件发生时,调用NumericValidationTriggerAction对象的Invoke方法//NumericValidationTriggerAction是TriggerAction<T>的派生类<triggeraction:NumericValidationTriggerAction/> </EventTrigger> </Entry.Triggers> </...
<Entry Grid.Column="1" Placeholder="Enter number" x:Name="entry"> <Entry.Triggers> <EventTrigger Event="TextChanged"> <triggeractions:NumericValidationTriggerAction /> </EventTrigger> </Entry.Triggers> </Entry> <Label Grid.Column="0" Text="!" TextColor="Red" IsVisible="{Binding Source={...
voidOnEntryTextChanged(objectsender, TextChangedEventArgs e){stringoldText = e.OldTextValue;stringnewText = e.NewTextValue;stringmyText = entry.Text; } TheCompletedevent is raised when the user has ended input by pressing theReturnkey on the keyboard, or by pressing the Tab key on Windows....
<Entryx:Name="entry"Text=""Placeholder="Enter text"/><ButtonText="Save"><Button.Triggers><DataTriggerTargetType="Button"Binding="{Binding Source={x:Reference entry}, Path=Text.Length}"Value="0"><SetterProperty="IsEnabled"Value="False"/><!-- Multiple Setter elements are allowed --></Data...
IEntry.Completed() 条目是单行文本条目。 它最适合用于收集小离散的信息片段,例如用户名和密码。 IFontElement.FontSizeDefaultValueCreator() 条目是单行文本条目。 它最适合用于收集小离散的信息片段,例如用户名和密码。 (继承自 InputView) IFontElement.OnFontAttributesChanged(FontAttributes, FontAttributes) ...
This method registers or de-registers an event handler for the TextChanged event, based on the value of the AttachBehavior attached property. The core functionality of the behavior is provided by the OnEntryTextChanged method, which parses the value entered in the Entry and sets the TextColor ...
So what I am seeing is that I can change the focus on the page to an Entry/Editor and enter some text. Then if I click on a button below that, I would expect the Editor's/Entry'sUnfocusedevent to fire because the control has lost focus when it switched to the button. From what ...
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2021年5月25日, 微软发布了最新的MAUI Preview4, 在每个预览版当中, 微软都引入了更多的控制和功能。