使用vb.net时，我需要将2个数据表仅加入1个gridview

Question

I have been searching through a lot of different forums, but havent found the help I am looking for, so here we go.

First of all I should inform you that I am well aware, that 1 solution could be to do a SQL join in my sql statement, however this is not so easy as I am using 2 different tables from 2 different databases. So I am interesting in hearing in another solution.

As it is now, I have made 2 queries, and made 2 datatables, and 2 gridviews. I have succeeded in binding the data in the 2 gridviews, and now I kinda want to "merge" them based on 1 column that they share.

How to do this in VB.net I don't know.

Basically I have 1 table in the database dbo_db_Test_Palle on the server OKPalle . From this I take the following columns and put into my datatable dt and bind to gridview 1.

| Name | ID | Organisation |

In another datatable (dt2) from dbo_db_Test_Palle2 from the server NOTokPalle I take the following columns and put into dt2, and bind to Gridview 2.

| Nickname | City  | Hobby | ID

What I would like to show in just one GridView is:

| Name | ID | Organisation | Nickname | City  | Hobby |

So basically I wish to add City and Hobby columns, from dt2 to dt , where the posts with ID matches (others I just leave blank).

I really hope someone out here can help me.

Answer 1

Something like this, but it's been a while since I've done this, you might need to hack around with it a little.

    Dim ds As New DataSet
    ds.Tables.Add(dt)
    ds.Tables.Add(dt2)
    ds.Relations.Add("rel", dt2.Columns("ID"), dt.Columns("ID"), False)
    dt.Columns.Add("Nickname", GetType(System.String), "Parent.Nickname")
    dt.Columns.Add("City", GetType(System.String), "Parent.City")
    dt.Columns.Add("Hobby", GetType(System.String), "Parent.Hobby")