Entity Framework常用查询语句_实用技巧

var info = from p in entity.Users where p.ID >= 10 orderby p.ID descending select p;
foreach (var item in info)
{
    Console.WriteLine("ID:" + item.ID + " " + "登录名:" + item.LoginName + " " + "密码:" + item.Password);
}

var info2 = entity.Users.Where(p => p.ID >= 10).OrderByDescending(p => p.ID);
foreach (var item in info)
{
    Console.WriteLine("ID:" + item.ID + " " + "登录名:" + item.LoginName + " " + "密码:" + item.Password);
}

var info3 = ((IObjectContextAdapter)entity).ObjectContext.CreateQuery(strSQL);
foreach (var item in info)
{
    Console.WriteLine("ID:" + item.ID + " " + "登录名:" + item.LoginName + " " + "密码:" + item.Password);
}

try
{
    string strSQL2 = "SELECT * FROM Users WHERE ID>=10 ORDER BY ID DESC";
    var info4 = entity.Database.SqlQuery(strSQL2);
    foreach (var item in info)
    {
        Console.WriteLine("ID:" + item.ID + " " + "登录名:" + item.LoginName + " " + "密码:" + item.Password);
    }
}
catch (Exception ex)
{
    Console.WriteLine(ex.Message);
}