db4o native query in C#: how to find by first number?












0
















  1. I want to change last number of my every "No" for all students (who is born between 1996 and 1998) to 0, for example. (from 160456 to 1604560)

  2. I want to delete data for students whos "No" first 2 numbers is 14, for example. (user2.No = 143457;)
    How to find data only by 1 or more numbers?


I'm using Linq:



using System.Linq;

using Db4objects.Db4o.Linq;


My database look like this:



 User user1 = new User();

    user1.Name = "Bob";

    user1.Surname = "Topson";

    user1.No = 160456;

    user1.Birth = new DateTime (1998, 5, 12);



 User user2 = new User();

    user2.Name = "Rob";

    user2.Surname = "Simpson";

    user2.No = 143457;

    user2.Birth = new DateTime (1996, 8, 4);


my user.cs code:



using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;



namespace db4o

{

    class User

    {

        public string Name { get; set; }

        public string Surname { get; set; }

        public int No { get; set; }

        public DateTime Birth { get; set; }

    }

}





.net linq db4o







share|improve this question























  • No one can help me? :)

    – PogChamp
    Dec 9 '18 at 0:25
















0
















  1. I want to change last number of my every "No" for all students (who is born between 1996 and 1998) to 0, for example. (from 160456 to 1604560)

  2. I want to delete data for students whos "No" first 2 numbers is 14, for example. (user2.No = 143457;)
    How to find data only by 1 or more numbers?


I'm using Linq:



using System.Linq;

using Db4objects.Db4o.Linq;


My database look like this:



 User user1 = new User();

    user1.Name = "Bob";

    user1.Surname = "Topson";

    user1.No = 160456;

    user1.Birth = new DateTime (1998, 5, 12);



 User user2 = new User();

    user2.Name = "Rob";

    user2.Surname = "Simpson";

    user2.No = 143457;

    user2.Birth = new DateTime (1996, 8, 4);


my user.cs code:



using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;



namespace db4o

{

    class User

    {

        public string Name { get; set; }

        public string Surname { get; set; }

        public int No { get; set; }

        public DateTime Birth { get; set; }

    }

}





.net linq db4o







share|improve this question























  • No one can help me? :)

    – PogChamp
    Dec 9 '18 at 0:25














0












0








0









  1. I want to change last number of my every "No" for all students (who is born between 1996 and 1998) to 0, for example. (from 160456 to 1604560)

  2. I want to delete data for students whos "No" first 2 numbers is 14, for example. (user2.No = 143457;)
    How to find data only by 1 or more numbers?


I'm using Linq:



using System.Linq;

using Db4objects.Db4o.Linq;


My database look like this:



 User user1 = new User();

    user1.Name = "Bob";

    user1.Surname = "Topson";

    user1.No = 160456;

    user1.Birth = new DateTime (1998, 5, 12);



 User user2 = new User();

    user2.Name = "Rob";

    user2.Surname = "Simpson";

    user2.No = 143457;

    user2.Birth = new DateTime (1996, 8, 4);


my user.cs code:



using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;



namespace db4o

{

    class User

    {

        public string Name { get; set; }

        public string Surname { get; set; }

        public int No { get; set; }

        public DateTime Birth { get; set; }

    }

}





.net linq db4o







share|improve this question















  1. I want to change last number of my every "No" for all students (who is born between 1996 and 1998) to 0, for example. (from 160456 to 1604560)

  2. I want to delete data for students whos "No" first 2 numbers is 14, for example. (user2.No = 143457;)
    How to find data only by 1 or more numbers?


I'm using Linq:



using System.Linq;

using Db4objects.Db4o.Linq;


My database look like this:



 User user1 = new User();

    user1.Name = "Bob";

    user1.Surname = "Topson";

    user1.No = 160456;

    user1.Birth = new DateTime (1998, 5, 12);



 User user2 = new User();

    user2.Name = "Rob";

    user2.Surname = "Simpson";

    user2.No = 143457;

    user2.Birth = new DateTime (1996, 8, 4);


my user.cs code:



using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;



namespace db4o

{

    class User

    {

        public string Name { get; set; }

        public string Surname { get; set; }

        public int No { get; set; }

        public DateTime Birth { get; set; }

    }

}





.net linq db4o




.net linq db4o






share|improve this question













share|improve this question











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asked Nov 19 '18 at 13:03









PogChampPogChamp

61




61













  • No one can help me? :)

    – PogChamp
    Dec 9 '18 at 0:25



















  • No one can help me? :)

    – PogChamp
    Dec 9 '18 at 0:25

















No one can help me? :)

– PogChamp
Dec 9 '18 at 0:25





No one can help me? :)

– PogChamp
Dec 9 '18 at 0:25












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