1. 确认项目中已经引入了Microsoft.AspNetCore.OData包和Microsoft.AspNetCore.Mvc.Core包。
2. 在Program.cs文件中添加以下代码，将MVC添加到应用程序构建中：

using Microsoft.AspNetCore.Builder; using Microsoft.AspNetCore.Hosting; using Microsoft.Extensions.Configuration; using Microsoft.Extensions.DependencyInjection; using Microsoft.Extensions.Hosting; using Microsoft.AspNetCore.Mvc;

namespace BlazorApp1.Server { public class Startup { public Startup(IConfiguration configuration) { Configuration = configuration; }

    public IConfiguration Configuration { get; }

    public void ConfigureServices(IServiceCollection services)
    {
        services.AddControllersWithViews();
        services.AddRazorPages();

        services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_3_0);
    }

    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
        }
        else
        {
            app.UseExceptionHandler("/Error");
            app.UseHsts();
        }

        app.UseHttpsRedirection();
        app.UseStaticFiles();

        app.UseRouting();

        app.UseEndpoints(endpoints =>
        {
            endpoints.MapControllers();
            endpoints.MapRazorPages();
        });
    }
}

}

3. 在需要使用MVC的页面或组件中添加以下using语句：

using Microsoft.AspNetCore.Mvc;

4. 重新生成项目并尝试使用MVC。