"entity save example in c# model first" Code Answer's
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entity save example in c# model first
Mushy Mockingbird
on Oct 13, 2020
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();
}
Source: docs.microsoft.com
entity save example in c# model first
Mushy Mockingbird
on Oct 13, 2020
using (var context = new BloggingContext())
{
var blog = context.Blogs.First();
blog.Url = "http://example.com/blog";
context.SaveChanges();
}
Source: docs.microsoft.com
entity save example in c# model first
Mushy Mockingbird
on Oct 13, 2020
using (var context = new BloggingContext())
{
var blog = context.Blogs.First();
context.Blogs.Remove(blog);
context.SaveChanges();
}
Source: docs.microsoft.com
entity save example in c# model first
Mushy Mockingbird
on Oct 13, 2020
// disconnected existing entity
var student = new Student(){ StudentId = 1, StudentName = "Steve" };
using (var context = new SchoolDBEntities())
{
context.Entry(student).State = student.StudentId == 0? EntityState.Added : EntityState.Modified;
context.SaveChanges();
}
Source: www.entityframeworktutorial.net
entity save example in c# model first
Mushy Mockingbird
on Oct 13, 2020
exec sp_executesql N'INSERT [dbo].[Student]([StudentName], [StandardId])
VALUES (@0, NULL)
SELECT [StudentID] FROM [dbo].[Student]
WHERE @@ROWCOUNT > 0 AND [StudentID] = scope_identity(),@0='Bill'
Source: www.entityframeworktutorial.net
entity save example in c# model first
Mushy Mockingbird
on Oct 13, 2020
// disconnected new entity
var student = new Student(){ StudentName = "Bill" };
using (var context = new SchoolDBEntities())
{
context.Entry(student).State = student.StudentId == 0? EntityState.Added : EntityState.Modified;
context.SaveChanges();
}
Source: www.entityframeworktutorial.net
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