Linq To SQL基本语句（增删改）

Insert

 

NorthwindDataContext db = new NorthwindDataContext();
var newCustomer = new Customer
{
    CustomerID = "MCSFT",
    CompanyName = "Microsoft",
    ContactName = "John Doe",
    ContactTitle = "Sales Manager",
    Address = "1 Microsoft Way",
    City = "Redmond",
    Region = "WA",
    PostalCode = "98052",
    Country = "USA",
    Phone = "(425) 555-1234",
    Fax = null
};
db.Customers.InsertOnSubmit(newCustomer);
db.SubmitChanges();

Delete

 

 

OrderDetail orderDetail =
    db.OrderDetails.First
    (c => c.OrderID == 10255 && c.ProductID == 36);
db.OrderDetails.DeleteOnSubmit(orderDetail);
db.SubmitChanges();

Update

 

 

Customer cust =
    db.Customers.First(c => c.CustomerID == "ALFKI");
cust.ContactTitle = "Vice President";
db.SubmitChanges();

 

var q = from p in db.Products
        where p.CategoryID == 1
        select p;
foreach (var p in q)
{
    p.UnitPrice += 1.00M;
}
db.SubmitChanges();