CVE-2020-0602 ASP.NET Core Denial of Service Vulnerability
CVE-2020-0603 ASP.NET Core Remote Code Execution Vulnerability
CVE-2020-0605 .NET Core Remote Code Execution Vulnerability
CVE-2020-0606 .NET Core Remote Code Execution Vulnerability
سلام
در بکارگیری کلاس ها، ثابت ها و... علاقه زیادی دارم تا از نام کامل استفاده کنم و در بیشتر کلاس ها اصلا using ندارم. اگرچه که خطوط کمی طولانی میشن و اجبارا برای خوانایی بهتر خطوط را میشکنم ولی در زمان مرور کدها کمی راحت تر هستم. سوالم اینه که آیا این کار تضادی با کد نویسی تمیز داره یا پیشنهاد میکنید برای خلوت کردن کدها حتما فضای نام را using کنم.
تشکر
Database Engineering Complete Course | DBMS Complete Course
In this program, you’ll learn:
Core techniques and methods to structure and manage databases.
Advanced techniques to write database driven applications and advanced data modeling concepts.
MySQL database management system (DBMS) and data creation, querying and manipulation.
How to code and use Python Syntax
How to prepare for technical interviews for database engineer roles.
Prefix is a free profiler for ASP.NET applications. It's dead easy to use and it will help you find bugs in your code that you didn't even know you had. I found two in what I thought were properly working apps within an hour of downloading Prefix.
dotnet ef dbcontext scaffold "Data Source=(local);Initial Catalog=BloggingCore2016;Integrated Security = true" Microsoft.EntityFrameworkCore.SqlServer -o Entities --context MyDBDataContext --verbose
using System;
using System.Collections.Generic;
namespace Core1RtmEmptyTest.Entities
{
public partial class Blog
{
public Blog()
{
Post = new HashSet<Post>();
}
public int BlogId { get; set; }
public string Url { get; set; }
public virtual ICollection<Post> Post { get; set; }
}
} using System;
using System.Collections.Generic;
namespace Core1RtmEmptyTest.Entities
{
public partial class Post
{
public int PostId { get; set; }
public string Content { get; set; }
public string Title { get; set; }
public virtual Blog Blog { get; set; }
public int BlogId { get; set; }
}
} using System;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata;
namespace Core1RtmEmptyTest.Entities
{
public partial class MyDBDataContext : DbContext
{
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
optionsBuilder.UseSqlServer(@"Data Source=(local);Initial Catalog=BloggingCore2016;Integrated Security = true");
}
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
modelBuilder.Entity<Blog>(entity =>
{
entity.Property(e => e.Url).IsRequired();
});
modelBuilder.Entity<Post>(entity =>
{
entity.HasOne(d => d.Blog)
.WithMany(p => p.Post)
.HasForeignKey(d => d.BlogId);
});
}
public virtual DbSet<Blog> Blog { get; set; }
public virtual DbSet<Post> Post { get; set; }
}
} public virtual Blog Blog { get; set; } public virtual ICollection<Post> Post { get; set; } <primary key property name> <navigation property name><primary key property name> <principal entity name><primary key property name>
public virtual Blog Blog { get; set; }
public int BlogId { get; set; } modelBuilder.Entity<Post>(entity =>
{
entity.HasOne(d => d.Blog)
.WithMany(p => p.Post)
.HasForeignKey(d => d.BlogId);
}); dotnet ef dbcontext scaffold "Data Source=(local);Initial Catalog=BloggingCore2016;Integrated Security = true" Microsoft.EntityFrameworkCore.SqlServer -o Entities --context MyDBDataContext --verbose -a
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
namespace Core1RtmEmptyTest.Entities
{
public partial class Blog
{
public Blog()
{
Post = new HashSet<Post>();
}
public int BlogId { get; set; }
[Required]
public string Url { get; set; }
[InverseProperty("Blog")]
public virtual ICollection<Post> Post { get; set; }
}
} using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
namespace Core1RtmEmptyTest.Entities
{
public partial class Post
{
public int PostId { get; set; }
public string Content { get; set; }
public string Title { get; set; }
[ForeignKey("BlogId")]
[InverseProperty("Post")]
public virtual Blog Blog { get; set; }
public int BlogId { get; set; }
}
} using System;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata;
namespace Core1RtmEmptyTest.Entities
{
public partial class MyDBDataContext : DbContext
{
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
optionsBuilder.UseSqlServer(@"Data Source=(local);Initial Catalog=BloggingCore2016;Integrated Security = true");
}
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
}
public virtual DbSet<Blog> Blog { get; set; }
public virtual DbSet<Post> Post { get; set; }
}
} [ForeignKey("BlogId")]
[InverseProperty("Post")]
public virtual Blog Blog { get; set; }
public int BlogId { get; set; } [InverseProperty("Blog")]
public virtual ICollection<Post> Post { get; set; } public virtual Blog Blog { get; set; } var firstPost = context.Post.First(); Console.WriteLine(firstPost.Blog.Url);
System.NullReferenceException Object reference not set to an instance of an object.
var firstPost = context.Post.Include(x => x.Blog).First(); Console.WriteLine(firstPost.Blog.Url);
var blogs = context.Blogs
.Include(blog => blog.Posts)
.Include(blog => blog.Owner)
.ToList(); var blogs = context.Blogs
.Include(blog => blog.Posts)
.ThenInclude(post => post.Author)
.ToList(); var blogs = context.Blogs
.Include(blog => blog.Posts)
.ThenInclude(post => post.Author)
.ThenInclude(author => author.Photo)
.ToList(); var blogs = context.Blogs
.Include(blog => blog.Posts)
.ThenInclude(post => post.Author)
.ThenInclude(author => author.Photo)
.Include(blog => blog.Owner)
.ThenInclude(owner => owner.Photo)
.ToList(); var blogs = context.Blogs
.Include(blog => blog.Posts)
.Select(blog => new
{
Id = blog.BlogId,
Url = blog.Url
})
.ToList(); CONSTRAINT [FK_Post_Blog_BlogId] FOREIGN KEY ([BlogId]) REFERENCES [Blog] ([BlogId]) ON DELETE CASCADE
modelBuilder.Entity<Post>()
.HasOne(p => p.Blog)
.WithMany(b => b.Posts)
.OnDelete(DeleteBehavior.Cascade); modelBuilder.Entity<Post>()
.HasOne(p => p.Blog)
.WithMany(b => b.Posts)
.IsRequired(); static string[] QueryCustomers (Expression<Func<Purchase, bool>> purchaseCriteria)
{
var data = new MyDataContext();
var query =
from c in data.Customers.AsExpandable()
where c.Purchases.Any (purchaseCriteria.Compile())
select c.Name;
return query.ToArray();
} 
Partial views in ASP.NET MVC allow you to reuse and customise components to act like user controls. They consist of both code and markup. They are an idea that is easy to grasp but they have great potential for the more adventurous developer who is prepared to experiment. Dino Esposito explains
