private static void SetupDatabase()
{
using (var db = new BloggingContext())
{
db.Database.EnsureCreated();
if (db.Blogs.Any())
{
db.Database.ExecuteSqlCommand("DELETE FROM dbo.Blogs");
}
db.Blogs.Add(new Blog { Name = "The Dog Blog", Url = "http://sample.com/dogs" });
db.Blogs.Add(new Blog { Name = "The Cat Blog", Url = "http://sample.com/cats" });
db.SaveChanges();
}
}
static void Main(string[] args)
{
SetupDatabase();
using (var db = new BloggingContext())
{
// Modify some existing blogs
var existing = db.Blogs.ToArray();
existing[0].Url = "http://sample.com/blogs/dogs";
existing[1].Url = "http://sample.com/blogs/cats";
// Insert some new blogs
db.Blogs.Add(new Blog { Name = "The Horse Blog", Url = "http://sample.com/blogs/horses" });
db.Blogs.Add(new Blog { Name = "The Snake Blog", Url = "http://sample.com/blogs/snakes" });
db.Blogs.Add(new Blog { Name = "The Fish Blog", Url = "http://sample.com/blogs/fish" });
db.Blogs.Add(new Blog { Name = "The Koala Blog", Url = "http://sample.com/blogs/koalas" });
db.Blogs.Add(new Blog { Name = "The Parrot Blog", Url = "http://sample.com/blogs/parrots" });
db.Blogs.Add(new Blog { Name = "The Kangaroo Blog", Url = "http://sample.com/blogs/kangaroos" });
db.SaveChanges();
}
}
private static void RunQueries(DbContextOptions <BloggingContext> options)
{
using (var db = new BloggingContext(options))
{
// Modify some existing blogs
var existing = db.Blogs.ToArray();
existing[0].Url = "http://sample.com/blogs/dogs";
existing[1].Url = "http://sample.com/blogs/cats";
// Insert some new blogs
db.Blogs.Add(new Blog {
Name = "The Horse Blog", Url = "http://sample.com/blogs/horses"
});
db.Blogs.Add(new Blog {
Name = "The Snake Blog", Url = "http://sample.com/blogs/snakes"
});
db.Blogs.Add(new Blog {
Name = "The Fish Blog", Url = "http://sample.com/blogs/fish"
});
db.Blogs.Add(new Blog {
Name = "The Koala Blog", Url = "http://sample.com/blogs/koalas"
});
db.Blogs.Add(new Blog {
Name = "The Parrot Blog", Url = "http://sample.com/blogs/parrots"
});
db.Blogs.Add(new Blog {
Name = "The Kangaroo Blog", Url = "http://sample.com/blogs/kangaroos"
});
try
{
db.SaveChanges();
/*
* exec sp_executesql N'SET NOCOUNT ON;
* UPDATE [Blogs] SET [Url] = @p0
* WHERE [BlogId] = @p1;
* SELECT @@ROWCOUNT;
*
* UPDATE [Blogs] SET [Url] = @p2
* WHERE [BlogId] = @p3;
* SELECT @@ROWCOUNT;
*
* DECLARE @inserted2 TABLE ([BlogId] int, [_Position] [int]);
* MERGE [Blogs] USING (
* VALUES (@p4, @p5, 0),
* (@p6, @p7, 1),
* (@p8, @p9, 2),
* (@p10, @p11, 3),
* (@p12, @p13, 4),
* (@p14, @p15, 5)) AS i ([Name], [Url], _Position) ON 1=0
* WHEN NOT MATCHED THEN
* INSERT ([Name], [Url])
* VALUES (i.[Name], i.[Url])
* OUTPUT INSERTED.[BlogId], i._Position
* INTO @inserted2;
*
* SELECT [t].[BlogId] FROM [Blogs] t
* INNER JOIN @inserted2 i ON ([t].[BlogId] = [i].[BlogId])
* ORDER BY [i].[_Position];
*
* ',N'@p1 int,@p0 nvarchar(4000),@p3 int,@p2 nvarchar(4000),@p4 nvarchar(4000),@p5 nvarchar(4000),@p6 nvarchar(4000),@p7 nvarchar(4000),@p8 nvarchar(4000),@p9 nvarchar(4000),@p10 nvarchar(4000),@p11 nvarchar(4000),@p12 nvarchar(4000),@p13 nvarchar(4000),@p14 nvarchar(4000),@p15 nvarchar(4000)',@p1=33,@p0=N'http://sample.com/blogs/dogs',@p3=34,@p2=N'http://sample.com/blogs/cats',@p4=N'The Horse Blog',@p5=N'http://sample.com/blogs/horses',@p6=N'The Snake Blog',@p7=N'http://sample.com/blogs/snakes',@p8=N'The Fish Blog',@p9=N'http://sample.com/blogs/fish',@p10=N'The Koala Blog',@p11=N'http://sample.com/blogs/koalas',@p12=N'The Parrot Blog',@p13=N'http://sample.com/blogs/parrots',@p14=N'The Kangaroo Blog',@p15=N'http://sample.com/blogs/kangaroos'
*
*/
}
catch (Exception ex)
{
Console.WriteLine(ex);
throw;
}
}
}