public static void Run()
{
using (var db = new BloggingContext())
{
db.Database.EnsureDeleted();
db.Database.EnsureCreated();
}
using (var db = new BloggingContext())
{
var blog = new Blog { Url = "http://sample.com" };
db.Blogs.Add(blog);
db.SaveChanges();
Console.WriteLine(blog.BlogId + ": " + blog.Url);
}
using (var db = new BloggingContext())
{
var blog = db.Blogs.First();
blog.Url = "http://sample.com/blog";
db.SaveChanges();
}
using (var db = new BloggingContext())
{
var blog = db.Blogs.First();
db.Blogs.Remove(blog);
db.SaveChanges();
}
// Insert some seed data for the final example
using (var db = new BloggingContext())
{
db.Blogs.Add(new Blog { Url = "http://sample.com/blog" });
db.Blogs.Add(new Blog { Url = "http://sample.com/another_blog" });
db.SaveChanges();
}
using (var db = new BloggingContext())
{
db.Blogs.Add(new Blog { Url = "http://sample.com/blog_one" });
db.Blogs.Add(new Blog { Url = "http://sample.com/blog_two" });
var firstBlog = db.Blogs.First();
firstBlog.Url = "";
var lastBlog = db.Blogs.Last();
db.Blogs.Remove(lastBlog);
db.SaveChanges();
}
}
public static void Run()
{
using (var context = new BloggingContext())
{
context.Database.EnsureDeleted();
context.Database.EnsureCreated();
}
#region Add
using (var context = new BloggingContext())
{
var blog = new Blog {
Url = "http://example.com"
};
context.Blogs.Add(blog);
context.SaveChanges();
}
#endregion
#region Update
using (var context = new BloggingContext())
{
var blog = context.Blogs.First();
blog.Url = "http://example.com/blog";
context.SaveChanges();
}
#endregion
#region Remove
using (var context = new BloggingContext())
{
var blog = context.Blogs.First();
context.Blogs.Remove(blog);
context.SaveChanges();
}
#endregion
#region MultipleOperations
using (var context = new BloggingContext())
{
// seeding database
context.Blogs.Add(new Blog {
Url = "http://example.com/blog"
});
context.Blogs.Add(new Blog {
Url = "http://example.com/another_blog"
});
context.SaveChanges();
}
using (var context = new BloggingContext())
{
// add
context.Blogs.Add(new Blog {
Url = "http://example.com/blog_one"
});
context.Blogs.Add(new Blog {
Url = "http://example.com/blog_two"
});
// update
var firstBlog = context.Blogs.First();
firstBlog.Url = "";
// remove
var lastBlog = context.Blogs.Last();
context.Blogs.Remove(lastBlog);
context.SaveChanges();
}
#endregion
}
public static void Run()
{
using (var db = new BloggingContext())
{
db.Database.EnsureDeleted();
db.Database.EnsureCreated();
}
using (var db = new BloggingContext())
{
var blog = new Blog {
Url = "http://sample.com"
};
db.Blogs.Add(blog);
db.SaveChanges();
Console.WriteLine($"{blog.BlogId}: {blog.Url}");
}
using (var db = new BloggingContext())
{
var blog = db.Blogs.First();
blog.Url = "http://sample.com/blog";
db.SaveChanges();
}
using (var db = new BloggingContext())
{
var blog = db.Blogs.First();
db.Blogs.Remove(blog);
db.SaveChanges();
}
// Insert some seed data for the final example
using (var db = new BloggingContext())
{
db.Blogs.Add(new Blog {
Url = "http://sample.com/blog"
});
db.Blogs.Add(new Blog {
Url = "http://sample.com/another_blog"
});
db.SaveChanges();
}
using (var db = new BloggingContext())
{
db.Blogs.Add(new Blog {
Url = "http://sample.com/blog_one"
});
db.Blogs.Add(new Blog {
Url = "http://sample.com/blog_two"
});
var firstBlog = db.Blogs.First();
firstBlog.Url = "";
var lastBlog = db.Blogs.First();
db.Blogs.Remove(lastBlog);
db.SaveChanges();
}
}
