我尝试使用以下代码更新 sql 表中的所有记录,但没有更新数据。有谁知道为什么?
using (DataContext db = new DataContext())
{
foreach (Item record in db.Items)
{
record.Description += "bla";
db.SubmitChanges();
}
}
设置器代码:
[Column(Storage="_Description", DbType="NVarChar(400) NOT NULL", CanBeNull=false)]
public string Description
{
get { return this._Description; }
set {
if ((this._Description != value))
{
this._Description = value;
}
}
}