Getting Started with Blazor Mention Component

24 Dec 20259 minutes to read

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

Prerequisites

Create a new Blazor App in Visual Studio

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

Blazor WASM Create Project Template

Install Syncfusion® Blazor DropDowns and Themes NuGet in the App

To add the Blazor Mention component in the app, open the NuGet package manager in Visual Studio (Tools → NuGet Package Manager → Manage NuGet Packages for Solution), then search and install Syncfusion.Blazor.DropDowns and Syncfusion.Blazor.Themes. Alternatively, run the following commands in the Package Manager Console to achieve the same.

Install-Package Syncfusion.Blazor.DropDowns -Version 32.1.19
Install-Package Syncfusion.Blazor.Themes -Version 32.1.19

NOTE

Syncfusion® Blazor components are available in nuget.org. Refer to the NuGet packages topic for the available NuGet packages list with component details.

Prerequisites

Create a new Blazor App in Visual Studio Code

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

Alternatively, create a WebAssembly application by using the following command in the integrated terminal(Ctrl+`).

dotnet new blazorwasm -o BlazorApp
cd BlazorApp

Install Syncfusion® Blazor DropDowns and Themes NuGet in the App

  • Press Ctrl+` to open the integrated terminal in Visual Studio Code.
  • Ensure in the project root directory where the .csproj file is located.
  • Run the following command to install the Syncfusion.Blazor.DropDowns and Syncfusion.Blazor.Themes NuGet packages and ensure all dependencies are installed.
dotnet add package Syncfusion.Blazor.DropDowns -v 32.1.19
dotnet add package Syncfusion.Blazor.Themes -v 32.1.19
dotnet restore

NOTE

Syncfusion® Blazor components are available in nuget.org. Refer to the NuGet packages topic for the available NuGet packages list with component details.

Prerequisites

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

dotnet --version

Create a Blazor WebAssembly App using .NET CLI

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

dotnet new blazorwasm -o BlazorApp
cd BlazorApp

Install Syncfusion® Blazor DropDowns and Themes NuGet in the App

To add the Blazor Mention component to the application, run the following commands in a command prompt (Windows), command shell (Linux), or terminal (macOS) to install the Syncfusion.Blazor.DropDowns and Syncfusion.Blazor.Themes NuGet packages. See Install and manage packages using the dotnet CLI for more details.

dotnet add package Syncfusion.Blazor.DropDowns -Version 32.1.19
dotnet add package Syncfusion.Blazor.Themes -Version 32.1.19
dotnet restore

NOTE

Syncfusion® Blazor components are available in nuget.org. Refer to the NuGet packages topic for the available NuGet packages list with component details.

Add Import Namespaces

Open the ~/_Imports.razor file 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 the Blazor WebAssembly App.

using Microsoft.AspNetCore.Components.Web;
using Microsoft.AspNetCore.Components.WebAssembly.Hosting;
using Syncfusion.Blazor;

var builder = WebAssemblyHostBuilder.CreateDefault(args);
builder.RootComponents.Add<App>("#app");
builder.RootComponents.Add<HeadOutlet>("head::after");

builder.Services.AddScoped(sp => new HttpClient { BaseAddress = new Uri(builder.HostEnvironment.BaseAddress) });

builder.Services.AddSyncfusionBlazor();
await builder.Build().RunAsync();
....

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 within the <head> section of the ~/index.html file.

<head>
    ....
    <link href="_content/Syncfusion.Blazor.Themes/bootstrap5.css" rel="stylesheet" />
    <script src="_content/Syncfusion.Blazor.Core/scripts/syncfusion-blazor.min.js" type="text/javascript"></script>
</head>

NOTE

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

Add Syncfusion® Blazor Mention component

Add the Syncfusion® Blazor Mention component in the ~/Pages/Index.razor file.

<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

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