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Getting started with Blazor Mention Component in Blazor Web App

14 Apr 20269 minutes to read

This section briefly explains about how to include Blazor Mention component in your Blazor Web App using Visual Studio, Visual Studio Code, and the .NET CLI.

Prerequisites

Create a new Blazor Web App in Visual Studio

Create a Blazor Web App using Visual Studio via Microsoft Templates or the Syncfusion® Blazor Extension. For detailed instructions, refer to the Blazor Web App Getting Started documentation.

Prerequisites

Create a new Blazor Web App in Visual Studio Code

Create a Blazor Web App using Visual Studio Code via Microsoft Templates or the Syncfusion® Blazor Extension. For detailed instructions, refer to the Blazor Web App Getting Started documentation.

For example, in a Blazor Web App with the Auto interactive render mode, use the following commands in the integrated terminal (Ctrl+`):

dotnet new blazor -o BlazorWebApp -int Auto
cd BlazorWebApp
cd BlazorWebApp.Client

Prerequisites

Install the latest version of .NET SDK. If you previously installed the SDK, determine the installed version by executing the following command in a command prompt (Windows) or terminal (macOS) or command shell (Linux).

dotnet --version

Create a Blazor Web App using .NET CLI

Run the following command to create a new Blazor Web App in a command prompt (Windows) or terminal (macOS) or command shell (Linux). For detailed instructions, refer to the Blazor Web App Getting Started documentation.

For example, in a Blazor Web App with the Auto interactive render mode, use the following commands:

dotnet new blazor -o BlazorWebApp -int Auto
cd BlazorWebApp
cd BlazorWebApp.Client

NOTE

Configure the appropriate Interactive render mode and Interactivity location while creating a Blazor Web App. For detailed information, refer to the interactive render mode documentation.

Install Syncfusion® Blazor packages

Install Syncfusion.Blazor.DropDowns and Syncfusion.Blazor.Themes NuGet packages in your project using the NuGet Package Manager in Visual Studio (Tools → NuGet Package Manager → Manage NuGet Packages for Solution), or the integrated terminal in Visual Studio Code (dotnet add package), or the .NET CLI.

Alternatively, run the following commands in the Package Manager Console to achieve the same.

Install-Package Syncfusion.Blazor.DropDowns -Version 33.2.3
Install-Package Syncfusion.Blazor.Themes -Version 33.2.3

If using the WebAssembly or Auto render modes in the Blazor Web App, install these packages in the client project.

NOTE

All Syncfusion Blazor packages are available on nuget.org. See the NuGet packages topic for details.

Add import namespaces

After the packages are installed, open the ~/_Imports.razor file in the client project and import the Syncfusion.Blazor and Syncfusion.Blazor.DropDowns namespaces.

@using Syncfusion.Blazor
@using Syncfusion.Blazor.DropDowns

Register Syncfusion® Blazor service

Register the Syncfusion Blazor service in the Program.cs file of your Blazor Web App.

....
using Syncfusion.Blazor;
....
builder.Services.AddSyncfusionBlazor();
....

NOTE

If the Interactive Render Mode is set to WebAssembly or Auto, register the Syncfusion® Blazor service in Program.cs files of both the server and client projects in your Blazor Web App.

Add stylesheet and script resources

The theme stylesheet and script can be accessed from NuGet through Static Web Assets. Include the stylesheet and script references in the ~/Components/App.razor file.

<link href="_content/Syncfusion.Blazor.Themes/fluent2.css" rel="stylesheet" />
....
<script src="_content/Syncfusion.Blazor.Core/scripts/syncfusion-blazor.min.js" type="text/javascript"></script>

NOTE

Check out the Blazor Themes topic to discover various methods (Static Web Assets, CDN, and CRG) for referencing themes in your Blazor application. Also, check out the Adding Script Reference topic to learn different approaches for adding script references in your Blazor application.

Add Syncfusion® Blazor Mention component

Add the Syncfusion Blazor Mention component in the ~/Components/Pages/*.razor file. If the interactivity location is set to Per page/component in the Web App, define a render mode at the top of the ~/Pages/*.razor file. (For example, InteractiveServer, InteractiveWebAssembly or InteractiveAuto).

NOTE

If the Interactivity Location is set to Global with Auto or WebAssembly, the render mode is automatically configured in the App.razor file by default.

@* desired render mode define here *@
@rendermode InteractiveAuto
<SfMention TItem="PersonData" DataSource="@EmailData">
    <TargetComponent>
        <div id="commentsMention" placeHolder="Type @@ and tag user" ></div>
    </TargetComponent>
    <ChildContent>
        <MentionFieldSettings Text="Name"></MentionFieldSettings>
    </ChildContent>
</SfMention>
<style>
    #commentsMention {
        min-height: 100px;
        border: 1px solid #D7D7D7;
        border-radius: 4px;
        padding: 8px;
        font-size: 14px;
        width: 600px;
    }

    div#commentsMention[placeholder]:empty:before {
        content: attr(placeholder);
        color: #555;
    }
</style>
@code {
    public class PersonData
    {
        public string Name { get; set; }
        public string EmailId { get; set; }
        public string EmployeeImage { get; set; }
    }
    List<PersonData> EmailData = new List<PersonData> {
    new PersonData() { Name="Selma Rose", EmployeeImage="7", EmailId="[email protected]" },
    new PersonData() { Name="Russo Kay", EmployeeImage="8", EmailId="[email protected]" },
    new PersonData() { Name="Camden Kate", EmployeeImage="9", EmailId="[email protected]" }
  };
}
  • Press ctrl+F5 or ⌘+F5 (macOS) to launch the application. This will render the Syncfusion® Blazor Mention component in the default web browser.
Blazor Mention Component

NOTE

View Sample in GitHub.

Mention target

The Target property of the Mention component allows you to specify an element on the page to which the mention element should be attached. This can be useful when you want to display the mention element in a specific location on the page. For example, you might use the Target property to attach the mention element to a specific div element or to a specific input field or to a specific textarea field. To specify the target element, you can pass a CSS selector, a DOM element.

In the bellow example, the Target property of the Mention component is set to the CSS selector #mentionTarget, which matches the textarea element with an id of mentionTarget. The mention element will be appended to the textarea element as a child element, allowing the user to select or mention a specific entity within the textarea.

  • RAZOR
    • <textarea id="mentionTarget" placeHolder="Type @@ and tag user"></textarea>

<SfMention TItem="PersonData" Target="#mentionTarget" DataSource="@EmailData">
    <ChildContent>
        <MentionFieldSettings Text="Name"></MentionFieldSettings>
    </ChildContent>
</SfMention>
<style>
    #mentionTarget {
        min-height: 100px;
        border: 1px solid #D7D7D7;
        border-radius: 4px;
        padding: 8px;
        font-size: 14px;
        width: 600px;
    }

    div#mentionTarget[placeholder]:empty:before {
        content: attr(placeholder);
        color: #555;
    }
</style>
@code {
    public class PersonData
    {
        public string Name { get; set; }
        public string EmailId { get; set; }
        public string EmployeeImage { get; set; }
    }
    List<PersonData> EmailData = new List<PersonData> {
    new PersonData() { Name="Selma Rose", EmployeeImage="7", EmailId="[email protected]" },
    new PersonData() { Name="Russo Kay", EmployeeImage="8", EmailId="[email protected]" },
    new PersonData() { Name="Camden Kate", EmployeeImage="9", EmailId="[email protected]" }
  };
}
    Blazor Mention target

    See also