C#•8mo ago

✅ How to automate update-database

I am bilding a Web server but i have to typ in update-database how can i automate this in Blazor in the Program.cs file. Im srry i cant be more specific because im new in this kind of stuff. The tutorial i watch is just outdated the code changed a bit. Tanks for your time and helping. In the tutorial https://www.youtube.com/watch?v=JeLnR_ObHd8&t=4624s on 1:16:57 - 1:17:17 and i have the most recent Version of Microsoft Visual Studio if u also have it and it looks like that: var app = builder.Build(); // Configure the HTTP request pipeline. if (app.Environment.IsDevelopment()) { app.UseMigrationsEndPoint(); } else { app.UseExceptionHandler("/Error"); app.UseHsts(); }

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17 Replies

Jimmacle•8mo ago

if you get an instance of your dbcontext you can call dbContext.Database.Migrate()

Juliandyce•8mo ago

i wanna updat sql datenbanken databanks

Jimmacle•8mo ago

the method i suggested does the same thing as update-database

Juliandyce•8mo ago

if u know where i have to put it because as u wrote i cant put it in the Program.cs file how can i put code in this extra blackish window on discord

Pobiega•8mo ago

$codegif

MODiX•8mo ago

https://cdn.discordapp.com/attachments/364492811489509376/892176158312001586/code.gif

Juliandyce•8mo ago

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
var connectionString = builder.Configuration.GetConnectionString("DefaultConnection");
builder.Services.AddDbContext<ApplicationDbContext>(options =>
    options.UseSqlServer(connectionString));
builder.Services.AddDatabaseDeveloperPageExceptionFilter();
builder.Services.AddDefaultIdentity<IdentityUser>(options => options.SignIn.RequireConfirmedAccount = false)
    .AddEntityFrameworkStores<ApplicationDbContext>();
builder.Services.AddRazorPages();
builder.Services.AddServerSideBlazor();
builder.Services.AddScoped<AuthenticationStateProvider, RevalidatingIdentityAuthenticationStateProvider<IdentityUser>>();
builder.Services.AddScoped<ProductService>();

var app = builder.Build();


// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseMigrationsEndPoint();
}
else
{
    app.UseExceptionHandler("/Error");
    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
    app.UseHsts();
}

app.UseHttpsRedirection();

app.UseStaticFiles();

app.UseRouting();

app.UseAuthentication();
app.UseAuthorization();

app.MapControllers();
app.MapBlazorHub();
app.MapFallbackToPage("/_Host");

app.Run();

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
var connectionString = builder.Configuration.GetConnectionString("DefaultConnection");
builder.Services.AddDbContext<ApplicationDbContext>(options =>
    options.UseSqlServer(connectionString));
builder.Services.AddDatabaseDeveloperPageExceptionFilter();
builder.Services.AddDefaultIdentity<IdentityUser>(options => options.SignIn.RequireConfirmedAccount = false)
    .AddEntityFrameworkStores<ApplicationDbContext>();
builder.Services.AddRazorPages();
builder.Services.AddServerSideBlazor();
builder.Services.AddScoped<AuthenticationStateProvider, RevalidatingIdentityAuthenticationStateProvider<IdentityUser>>();
builder.Services.AddScoped<ProductService>();

var app = builder.Build();


// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseMigrationsEndPoint();
}
else
{
    app.UseExceptionHandler("/Error");
    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
    app.UseHsts();
}

app.UseHttpsRedirection();

app.UseStaticFiles();

app.UseRouting();

app.UseAuthentication();
app.UseAuthorization();

app.MapControllers();
app.MapBlazorHub();
app.MapFallbackToPage("/_Host");

app.Run();

this is how the program.cs looks like

"DefaultConnection": "Server=(localdb)\\mssqllocaldb;Database=PlanerApp;Trusted_Connection=True;MultipleActiveResultSets=true"

"DefaultConnection": "Server=(localdb)\\mssqllocaldb;Database=PlanerApp;Trusted_Connection=True;MultipleActiveResultSets=true"

Jimmacle•8mo ago

var app = builder.Build();
using (var serviceScope = app.Services.CreateScope())
{
  var dbContext = serviceScope.ServiceProvider.GetRequiredService<ApplicationDbContext>();
  dbContext.Database.Migrate();
}

var app = builder.Build();
using (var serviceScope = app.Services.CreateScope())
{
  var dbContext = serviceScope.ServiceProvider.GetRequiredService<ApplicationDbContext>();
  dbContext.Database.Migrate();
}

should be roughly that, i typed it in discord so no compiler checking you need a service scope because .AddDbContext registers the dbcontext as a scoped service an alternative is .AddDbContextFactory and using IDbContextFactory<ApplicationDbContext>

Juliandyce•8mo ago

"IServiceScope" has no definition for "GetRequiredService", and the overload of the optimal extension method "ServiceProviderServiceExtensions.GetRequiredService<ApplicationDbContext>(IServiceProvider)" needs a receiver of the typ "System.IServiceProvider".

Jimmacle•8mo ago

corrected

Juliandyce•8mo ago

what now

Jimmacle•8mo ago

use the updated code i edited the message

Juliandyce•8mo ago

oh thank u it now at least works. I dont know if it does what I want but 🫨 . I hope I didn´t distract u with my silly question.

Jimmacle•8mo ago

it does do what you want you want to do update-database but in code right? this will apply migrations automatically when your app starts

Juliandyce•8mo ago

je so when i take it online it does it automaticly

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✅ How to automate update-database