private static void DeleteExistingData()
{
var db = new BlogDB();
var lastPost = db.Posts.OrderByDescending(p => p.ID).First();
db.Comments.RemoveRange(lastPost.Comments);
lastPost.Tags.Clear();
db.Posts.Remove(lastPost);
db.SaveChanges();
Console.WriteLine($"Deleted post #{lastPost.ID}");
}
private static void CreateNewEntryInDB()
{
var db = new BlogDB();
var post = new Posts()
{
Title = "New Title",
Body = "New Post Body",
Date = DateTime.Now
};
db.Posts.Add(post);
db.SaveChanges();
}
private static void CascadingInsert()
{
var db = new BlogDB();
var post = new Posts()
{
Title = "New Post Title",
Date = DateTime.Now,
Body = "This post have comments and tags",
Users = db.Users.First(),
Comments = new Comments[]
{
new Comments() { Text = "Comment 1", Date=DateTime.Now },
new Comments() { Text = "Comment 2", Date=DateTime.Now,
Users = db.Users.First()} },
Tags = db.Tags.Take(3).ToList()
};
db.Posts.Add(post);
db.SaveChanges();
}
private static void UpdateExistingData()
{
var db = new BlogDB();
var user = db.Users.Where(u => u.Username == "maria").FirstOrDefault();
user.PasswordHash = Guid.NewGuid().ToByteArray();
db.SaveChanges();
Console.WriteLine("User #{0} ({1}) has a new random password.", user.ID, user.Username);
}
