Menu Blazor ItemClicked syntax - Smart UI Components

Tagged: blazor, blazor events, blazor main menu, blazor menu

This topic has 3 replies, 2 voices, and was last updated 3 years, 9 months ago by admin.

Viewing 4 posts - 1 through 4 (of 4 total)

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January 28, 2021 at 8:13 pm #101397

Member

Hi,
I am trying to subscribe to a Blazor Menu ItemClicked event but I can’t figure out what the syntax in the mark up to connect it up with the handler.
I have this in the markup:
<Menu DataSource=”@MenuItems” ItemClicked=”MenuClicked” id=”menu”>
and this in the code section
public void MenuClicked(object sender, MenuItemClickedEventArgs args)
{}
How connect the ItemClicked event to the MenuClicked handler?

January 29, 2021 at 7:23 am #101399

admin

Keymaster

Hi ScottP,
Thanks for trying out our Blazor components.
In order to subscribe to the Menu event, you can use the following syntax:

@page "/menu"
<Example Name="Menu">
	<Menu OnItemClick="OnItemClick" id="menu">
		<MenuItemsGroup>
			File
			<MenuItem Shortcut="Ctrl+N">New</MenuItem>
			<MenuItem Shortcut="Ctrl+0">Open</MenuItem>
			<MenuItemsGroup>
				Open Containing Folder
				<MenuItem>Explorer</MenuItem>
				<MenuItem>cmd</MenuItem>
			</MenuItemsGroup>
			<MenuItem Shortcut="Ctrl+S" disabled>Save</MenuItem>
			<MenuItem Shortcut="Ctrl+Alt+S" separator>Save As...</MenuItem>
			<MenuItem Shortcut="Alt+F4">Exit</MenuItem>
		</MenuItemsGroup>
		<MenuItemsGroup>
			Edit
			<MenuItem Shortcut="Ctrl+Z">Undo</MenuItem>
			<MenuItem Shortcut="Ctrl+Y" separator>Redo</MenuItem>
			<MenuItem Shortcut="Ctrl+X">Cut</MenuItem>
			<MenuItem Shortcut="Ctrl+C">Copy</MenuItem>
			<MenuItem Shortcut="Ctrl+V" disabled>Paste</MenuItem>
		</MenuItemsGroup>
		<MenuItemsGroup DropDownHeight=300>
			Encoding
			<MenuItem>Encode in ANSI</MenuItem>
			<MenuItem>Encode in UTF-8</MenuItem>
			<MenuItem>Encode in UTF-8-BOM</MenuItem>
			<MenuItem>Encode in UTCS-2 BE BOM</MenuItem>
			<MenuItem>Encode in UTCS-2 LE BOM</MenuItem>
			<MenuItemsGroup separator>
				Character sets
				<MenuItemsGroup>
					Cyrillic
					<MenuItem>ISO 8859-5</MenuItem>
					<MenuItem>KOI8-R</MenuItem>
					<MenuItem>KOI8-U</MenuItem>
					<MenuItem>Windows-1251</MenuItem>
				</MenuItemsGroup>
				<MenuItemsGroup>
					Chinese
					<MenuItem>Big5 (Traditional)</MenuItem>
					<MenuItem>GB2312 (Simplified)</MenuItem>
				</MenuItemsGroup>
				<MenuItemsGroup>
					Western European
					<MenuItem>ISO 8859-1</MenuItem>
					<MenuItem>ISO 8859-15</MenuItem>
					<MenuItem>OEM 850</MenuItem>
					<MenuItem>Windows-1252</MenuItem>
				</MenuItemsGroup>
			</MenuItemsGroup>
			<MenuItem>Convert to ANSI</MenuItem>
			<MenuItem>Convert to UTF-8</MenuItem>
			<MenuItem>Convert to UTF-8-BOM</MenuItem>
			<MenuItem>Convert to UTCS-2 BE BOM</MenuItem>
			<MenuItem>Convert to UTCS-2 LE BOM</MenuItem>
		</MenuItemsGroup>
	</Menu>
</Example>
@code {
    void OnItemClick(Event eventObj)
    {
        MenuItemClickEventDetail detail = eventObj["Detail"];
        Console.WriteLine(detail.Label);
    }
}

Hope this helps.
Best regards,
Peter Stoev
Smart UI Team
https://www.htmlelements.com/

January 29, 2021 at 3:23 pm #101405

ScottP

Member

Thanks for the reply.
Your response was for:
<table class=”table”>
<tbody>
<tr>
<td>OnItemClick</td>
<td>EventCallback<Event></td>
<td>This event is triggered when a menu item is clicked.</td>
<td>dynamic item, string label, dynamic value</td>
</tr>
</tbody>
</table>
but I was asking about:
<table class=”table”>
<tbody>
<tr>
<td>ItemClicked</td>
<td>event MenuItemClickedEventHandler</td>
<td>This event is triggered when a menu item is clicked.</td>
<td>MenuItemClickedEventArgs</td>
</tr>
</tbody>
</table>
Can you please show an example for this handler?
Thanks.

January 30, 2021 at 12:21 pm #101410

admin

Keymaster

Hi Scott,
It is not possible to subscribe to ItemClicked event using Razor syntax, because it is not defined as a component Parameter and it cannot be as it is “event” type. It is possible to subscribe to the event using the syntax I sent you. ItemClicked way to subscribe to events is useful only when you want to add multiple event handlers.
For Example:

@page "/menu"
<Example Name="Menu">
	<Menu OnReady="OnReady" OnItemClick="OnItemClick" id="menu">
		<MenuItemsGroup>
			File
			<MenuItem Shortcut="Ctrl+N">New</MenuItem>
			<MenuItem Shortcut="Ctrl+0">Open</MenuItem>
			<MenuItemsGroup>
				Open Containing Folder
				<MenuItem>Explorer</MenuItem>
				<MenuItem>cmd</MenuItem>
			</MenuItemsGroup>
			<MenuItem Shortcut="Ctrl+S" disabled>Save</MenuItem>
			<MenuItem Shortcut="Ctrl+Alt+S" separator>Save As...</MenuItem>
			<MenuItem Shortcut="Alt+F4">Exit</MenuItem>
		</MenuItemsGroup>
		<MenuItemsGroup>
			Edit
			<MenuItem Shortcut="Ctrl+Z">Undo</MenuItem>
			<MenuItem Shortcut="Ctrl+Y" separator>Redo</MenuItem>
			<MenuItem Shortcut="Ctrl+X">Cut</MenuItem>
			<MenuItem Shortcut="Ctrl+C">Copy</MenuItem>
			<MenuItem Shortcut="Ctrl+V" disabled>Paste</MenuItem>
		</MenuItemsGroup>
		<MenuItemsGroup DropDownHeight=300>
			Encoding
			<MenuItem>Encode in ANSI</MenuItem>
			<MenuItem>Encode in UTF-8</MenuItem>
			<MenuItem>Encode in UTF-8-BOM</MenuItem>
			<MenuItem>Encode in UTCS-2 BE BOM</MenuItem>
			<MenuItem>Encode in UTCS-2 LE BOM</MenuItem>
			<MenuItemsGroup separator>
				Character sets
				<MenuItemsGroup>
					Cyrillic
					<MenuItem>ISO 8859-5</MenuItem>
					<MenuItem>KOI8-R</MenuItem>
					<MenuItem>KOI8-U</MenuItem>
					<MenuItem>Windows-1251</MenuItem>
				</MenuItemsGroup>
				<MenuItemsGroup>
					Chinese
					<MenuItem>Big5 (Traditional)</MenuItem>
					<MenuItem>GB2312 (Simplified)</MenuItem>
				</MenuItemsGroup>
				<MenuItemsGroup>
					Western European
					<MenuItem>ISO 8859-1</MenuItem>
					<MenuItem>ISO 8859-15</MenuItem>
					<MenuItem>OEM 850</MenuItem>
					<MenuItem>Windows-1252</MenuItem>
				</MenuItemsGroup>
			</MenuItemsGroup>
			<MenuItem>Convert to ANSI</MenuItem>
			<MenuItem>Convert to UTF-8</MenuItem>
			<MenuItem>Convert to UTF-8-BOM</MenuItem>
			<MenuItem>Convert to UTCS-2 BE BOM</MenuItem>
			<MenuItem>Convert to UTCS-2 LE BOM</MenuItem>
		</MenuItemsGroup>
	</Menu>
</Example>
@code {
    void OnReady(Menu menu)
    {
        menu.ItemClicked += delegate(object sender, MenuItemClickedEventArgs args)
        {
            Console.WriteLine(args.Label);
        };
    }
    void OnItemClick(Event eventObj)
    {
        MenuItemClickEventDetail detail = eventObj["Detail"];
        Console.WriteLine(detail.Label);
    }
}

Best regards,
Peter Stoev
Smart UI Team
https://www.htmlelements.com/

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