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c#persistenceentitybltoolkit
Wally_the_Walrus
Wally_the_Walrus

Reputation: 219

bltoolkit inserting data to a table

I have this entity :

namespace Entities.dbo
{
    [TableName("tbl_snapshot")]
    public class Snapshot : AbstractEntity
    {
        [MapField("track")]
        public int TrackId { get; set; }

        [Association(CanBeNull = false, OtherKey = "id", ThisKey = "track")]
        public Track Track { get; set; }

        [MapField("snapshotnumber")]
        public int SnapshotNumber { get; set; }

        [MapField("data")]
        public string Data { get; set; }
}}

and I try to insert a new Snapshot into a database like this :

public static void XXX(Snapshot snapshot)
        {
            using (var db = new MyDbManager())
            {

                var s = new Snapshot
                                 {
                                     Id = snapshot.Id,
                                     Data = snapshot.Data,
                                     SnapshotNumber = snapshot.SnapshotNumber,
                                     TrackId = snapshot.Track.Id
                                 };


                db.GetTable<Snapshot>().Insert(() => s);
            }
        }

Can you see any problem there? the snapshot I send to the XXX method look like this:

(Serialized in JSON ):

{"TrackId":2,"Track":null,"SnapshotNumber":2,"Data":"030405","Id":3}

any idea where is the problem?

thanks

Upvotes: 0

Views: 1857

Answers (1)

Hao Nguyen
Hao Nguyen

Reputation: 26

The problem is Bltoolkit's LinQ insert method does not support a constant value: db.GetTable().Insert(() => s); s is a constant value.

Here are 02 solutions you can try:

  1. Simply don't use the LinQ method:

    db.Insert(s);

  2. If you still want LinQ method? please follows this link, you will find a workaround:

http://yfilonov.blogspot.com/2012/10/linq-warkaround-for-bltoolkit-insert.html

Upvotes: 1

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