blazor-docs/blazor/timepicker/native-events.md

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Native Events in Blazor TimePicker Component

The following section explains steps to include native events and pass data to event handler in TimePicker component.

Bind native events to TimePicker

Any native event can be accessed by using on <event> attribute with a component. The attribute's value is treated as an event handler.

In the following example, the KeyPressed method is called every time the key is pressed on input.

@using Syncfusion.Blazor.Calendars

<SfTimePicker TValue="DateTime?" @onkeypress='@KeyPressed'></SfTimePicker>

@code {
    public void KeyPressed(){
      Console.WriteLine("Key Pressed!");
  }
}

Also, the above example code can be rewritten as follows using Lambda expressions.

@using Syncfusion.Blazor.Calendars

<SfTimePicker TValue="DateTime?" @onkeypress="@(() => Console.WriteLine("Key Pressed!"))"></SfTimePicker>

Pass event data to event handler

Blazor provides set of argument types for map to native events. The list of event types and event arguments are:

• Focus Events - FocusEventArgs
• Mouse Events - MouseEventArgs
• Keyboard Events - KeyboardEventArgs
• Input Events - ChangeEventArgs/EventArgs
• Touch Events – TouchEventArgs
• Pointer Events – PointerEventArgs

In the following example, the KeyPressed method is called every time any key is pressed inside input. But the message will be printed when you press "5" key.

@using Syncfusion.Blazor.Calendars

<SfTimePicker TValue="DateTime?" @onkeypress='@(e => KeyPressed(e))'></SfTimePicker>

@code {
    public void KeyPressed(KeyboardEventArgs args)
    {
        if (args.Key == "5")
        {
            Console.WriteLine("5 was pressed");
        }
    }
}

Using Lambda expression also, the event data can be passed to the event handler.

List of Native events supported

List of Native events
onclick	onblur	onfocus	onfocusout
onmousemove	onmouseover	onmouseout	onmousedown
ondblclick	onkeydown	onkeyup	onkeypress
ontouchend	onfocusin	onmouseup	ontouchstart