dotnet core update migration on startup

                
                        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env, DataContext dataContext)
{
    // migrate any database changes on startup (includes initial db creation)
    dataContext.Database.Migrate();

    ...
}
                    
                

dotnet core cli add migration

                        
                                In .net core CLI use 
dotnet ef migrations add InitialCreate
                            
                        

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