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Getting Started with Essential JS 2 for ASP.NET Core Razor Components in Visual Studio 2019

This article provides a step-by-step introduction to configure Essential JS 2 setup, build and publish a simple .NET Core Razor Components web application using the Visual Studio 2019.

Prerequisites

The official prerequisites to create and run an ASP.NET Core Razor Components on Windows environment are described in the .NET Core Razor components documentation website.

Create a Razor application from VS 2019

Step 1: Choose File > New > Project… in the Visual Studio menu bar.

new project in aspnetcore razor

Step 2: Make sure .NET Core and ASP.NET Core 3.0 are selected at the top.

select framework

Step 3: Choose the Razor template and change the application name, and then click OK.

Importing Essential JS 2 Razor components in the application

Step 1: Now, add the Syncfusion.EJ2.AspNet.Core.RazorComponents NuGet package to the new application by using the NuGet Package Manager. Right-click the project and select Manage NuGet Packages.

nuget explorer

Step 2: Search the Syncfusion.EJ2.AspNet.Core.RazorComponents keyword in the Browse tab and install Syncfusion.EJ2.AspNet.Core.RazorComponents NuGet package in the application.

select nuget

Step 3: The Essential JS 2 package will be included in the project, after the installation process is completed.

Step 4: Open ~/_Imports.razor file and import the Syncfusion.EJ2.RazorComponents.

    @using Syncfusion.EJ2.RazorComponents
    @using Syncfusion.EJ2.RazorComponents.CircularGauges

Step 5: Add the client-side resources through CDN or local npm package in the <head> element of the ~/wwwroot/index.html page.

import cdn

Step 6: Now, add the Syncfusion Essential JS 2 components in any web page (cshtml) in the Pages folder. For example, the Circular Gauge component is added in the ~/Pages/Index.cshtml page.

<div class="control-section" >
    <EjsCircularGauge ID="gauge" ></EjsCircularGauge>
</div>
@functions { }

Step 7: After successful compilation of your application, simply press F5 to run the application.

Output be like the below.

Circular Gauge Sample

Set Pointer Value

You can change the pointer value in the above sample using value property in pointers.

<div class="control-section" >
    <EjsCircularGauge ID="gauge" >
        <CircularGaugeAxes >
            <CircularGaugeAxis  Pointers='@pointers' >
            </CircularGaugeAxis>
        </CircularGaugeAxes>
    </EjsCircularGauge>
</div>
@functions {
     public object[] pointers = new object[] {
        new { value=35 }
    };
}

Circular Gauge Sample