如何編寫與以下TSQL相同的Linq-To-SQL語句？

Question

TSQL： -

Update table1 
Set Name = 'John', 
    Address = null 
where 
ID = 1 

LINQ到SQL

var tab = db.Table1.Single(s => s.ID == 3); 
       tab.Name = DateTime.Now; 
       tab.Address = null; 
       db.SubmitChanges(); 

Answer 1

using (var dataContext = new MyEntities()) 
{ 
    var contact = Contacts.Single (c => c.ContactID == 1); 
    contact.FirstName = 'John'; 
    contact.Address= 'Toronto'; 
    dataContext.SaveChanges(); 
} 

Answer 2

沒有一個單一的LINQ到更新SQL語句。你要檢索的對象，對其進行修改，然後保存更改（代碼假設單排，因爲你有一個特定ID）：

var entity = context.Table1.Single(t => t.Id == 1); 

entity.Name = "John"; 
entity.Address = "Toronto"; 

context.SubmitChanges();