How to Use MySQL Database to Setup ASP.NET Core 3.1 React Web Application

In this article, we will give short tutorial about how to setup ASP.NET Core 3.1 React Web Application using MySQL database.


  • Microsoft Visual Studio 2019 Community Edition
  • .net core 3.1
  • MySQL Tools for Visutal Studio
  • mysql-for-visualstudio-1.2.9.msi, download from here and install
  • Windows 10 PC
  • A browser preferably Chrome, Firefox or IE 11 or higher

Steps to Configure Identity Server 4 using MySQL in ASP.NET Core 3.1 React Web application

Delete Data Directory

Locate and delete the Migrations directory which is found under the Data directory of the solution

Install Pomelo.EntityFrameworkCore.MySql

Right click on the project and select the menu option Manage NuGet Packages. You can find three menu tabs Browse, Installed,Updates. Under the Installed tab, locate and uninstall the package Microsoft.EntityFrameworkCore.SQLServer.

Now navigate to the browse tab and search for and install the package Pomelo.EntityFrameworkCore.MySql

Create MySQL database

Access the MySQL database via MySQL workbench or within Visual Studio by navigating to Server Explorer and connecting to MySQL database server. Now create a database in MySql by running the following MySQL statement.

CREATE SCHEMA reactmembership;

Update appsettings.json to point to MySQL Connection String

Update value of DefaultConnection in appsettings.json to


The appsettings.json file will look like this once we have MySQL connection string updated for DefaultConnection

  "ConnectionStrings": {
    "DefaultConnection": "server=localhost;port=3306;database=reactmembership;user=root;password=p@$$w0Rd;CharSet=utf8"
  "Logging": {
      "LogLevel": {
        "Default": "Warning"
  "IdentityServer": {
    "Clients": {
      "ReactMembershipDemo": {
        "Profile": "IdentityServerSPA"
"AllowedHosts": "*"

Update Startup.cs to use MySQL

In Startup.cs file update ConfigureServices method to replace UseSqlServer with UseMySql

public void ConfigureServices(IServiceCollection services)
  services.AddDbContext<ApplicationDbContext>(options => options.UseMySql(


  .AddApiAuthorization<ApplicationUser, ApplicationDbContext>();



// In production, the React files will be served from this directory
services.AddSpaStaticFiles(configuration => {
configuration.RootPath = "ClientApp/build";

Scaffold New Migration and Update MySQL Database

In Visual Studio 2019, Navigate to Tools-> Nuget Package Manager -> Package Manager Console

In Visual Studio, use the Package Manager Console to scaffold a new migration and apply it to the database:

Add-Migration [migration name of your choice]

Build and Run the ASP.NET Core 3.1 React Web with Identity Server 4 using MySQL

Build the application using the command Ctrl+Shift+B and hit function key F5 to run the application.

Once the application runs in a browse on localhost, you will see a header menu options to Register. Navigate to Register and provide email and password with confirm password.

Check the MySQL database for the registered user

Verify the user created in MySql database in aspnetusers table by running the following select statement

select * from aspnetusers

You should find the user with email id provided while registering with the web application.

Congratulations, you have successfully configured the ASP.NET Core 3.1 web app with Secure Membership to use MySQL as the database.

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