You can create a ASP.NET Web API using Visual Studio in one of the following ways,

Install RecroGrid Framework in the App

RecroGrid Framework is distributed as the nuget package.

Install the package using .NET CLI or Package Manager

dotnet add package Recrovit.RecroGridFramework.Core

Install-Package Recrovit.RecroGridFramework.Core

Register RecroGrid Framework Services

Open Program.cs file and register the RecroGrid Framework Services in the web app.

        var builder = WebApplication.CreateBuilder(args);

        // Add services to the container.
        builder.Services.AddControllersWithViews();

        builder.AddRGF();
        builder.AddBaseDbContext();

        var app = builder.Build();

        // Configure the HTTP request pipeline.
        app.UseHttpsRedirection();
        app.UseStaticFiles();
        app.UseRouting();

        app.UseAuthorization();

        app.UseRGF<BaseDbContext, BaseDbContextPool, BaseDbContextPool>();

        app.MapControllers();

        app.Run();

Enable Cross-Origin Requests (CORS)

Program.cs

        var builder = WebApplication.CreateBuilder(args);

        builder.Services.AddCors(options =>
        {
            options.AddPolicy("RGF.Client", b =>
            {
                var allowedOrigins = builder.Configuration
                    .GetSection("CorsSettings:AllowedOrigins")
                    .Get<string[]>();
                if (allowedOrigins != null)
                {
                    b.WithOrigins(allowedOrigins)
                           .AllowAnyHeader()
                           .AllowAnyMethod();
                }
            });
        });

        // Add services to the container.
        builder.Services.AddControllersWithViews();

        builder.AddRGF();
        builder.AddBaseDbContext();

        var app = builder.Build();

        // Configure the HTTP request pipeline.
        app.UseHttpsRedirection();
        app.UseStaticFiles();
        app.UseRouting();

        app.UseCors("RGF.Client");
        app.UseAuthorization();

        app.UseRGF<BaseDbContext, BaseDbContextPool, BaseDbContextPool>();

        app.MapControllers();

        app.Run();

appsettings.json

  "CorsSettings": {
    "AllowedOrigins": [
      "https://{CLIENT-DOMAIN}" //e.g. "https://localhost:11920", "http://example.com"
    ]
  }