Getting Started with Blazor Chat UI Component

24 Dec 20257 minutes to read

This section explains how to add the Blazor Chat UI 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 InteractiveChat and Themes NuGet in the App

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

Install-Package Syncfusion.Blazor.InteractiveChat -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 InteractiveChat and Themes NuGet in the App

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

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

dotnet add package Syncfusion.Blazor.InteractiveChat -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.InteractiveChat namespaces.

@using Syncfusion.Blazor
@using Syncfusion.Blazor.InteractiveChat

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 Chat UI component

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

<div style="height: 400px; width: 400px;">
    <SfChatUI></SfChatUI>
</div>
  • Press Ctrl+F5 (Windows) or ⌘+F5 (macOS) to launch the application. This will render the Syncfusion® Blazor Chat UI component in your default web browser.
Blazor Chat UI Component.

Configure messages and user

You can use the Messages property to add messages and the User property to configure the current user for the chat.

<div style="height: 400px; width: 400px;">
    <SfChatUI ID="chatUser" User="CurrentUserModel" Messages="ChatUserMessages"></SfChatUI>
</div>

@code {
    private static UserModel CurrentUserModel = new UserModel() { ID = "User1", User = "Albert" };
    private static UserModel MichaleUserModel = new UserModel() { ID = "User2", User = "Michale Suyama" };

    private List<ChatMessage> ChatUserMessages = new List<ChatMessage>()
    {
        new ChatMessage() { Text = "Want to get coffee tomorrow?", Author = CurrentUserModel },
        new ChatMessage() { Text = "Sure! What time?", Author = MichaleUserModel },
        new ChatMessage() { Text = "How about 10 AM?", Author = CurrentUserModel }
    };
}
Blazor Chat UI default prompt.