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YPTHDataContext ypth = new YPTHDataContext();
var query = from val in ypth.T_User select val;
foreach (var item in query)
{
Console.WriteLine(item.ID + "----" + item.Name + "----" + item.Pwd);
}
Console.WriteLine("where查询");
query = query.Where(item => item.Name == "jack");
foreach (var item in query)
{
Console.WriteLine(item.ID + "----" + item.Name + "----" + item.Pwd);
}
Console.WriteLine("插入数据");
T_User t_user = new T_User();
t_user.Name = "Gandoulf";
t_user.Pwd = "123456";
ypth.T_User.InsertOnSubmit(t_user);
ypth.SubmitChanges();
Console.WriteLine("新增之后");
query = from val in ypth.T_User select val;
foreach (var item in query)
{
Console.WriteLine(item.ID + "----" + item.Name + "----" + item.Pwd);
}
Console.WriteLine("删除ID=1018");
t_user = ypth.T_User.SingleOrDefault(item => item.ID == 1018);
ypth.T_User.DeleteOnSubmit(t_user);
Console.WriteLine("修改ID=1016");
t_user = ypth.T_User.SingleOrDefault(item => item.ID == 1016);
t_user.Name = "Peter JackSon";
ypth.SubmitChanges();