All You Need to Know about ADO.NET: Part 2/2
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Accessing Related Records

If tables in a DataSet have a logical relationship, a DataRelation object can make the related records in another table available to us. We can create a DataRelation object whose properties are set to reflect the common keys. We can then use the DataRelation object to get related records. Instead of joining the tables, we call the GetChildRows method of a data row in the parent table, passing the DataRelation object that defines the parent/child relationship to it. The method returns an array of related child records.

The following code illustrates a simple example of getting related records. In this example, the array DRelnArray is set to the child records of the first row in the Customers table. This assumes that the relation CustomesrOrders is added to the DataSet:

Dim RowCtr As Integer
Dim DRelnArray() As DataRow

RowCtr = 0
DRelnArray = _ dsCustomersOrders1.Customers(RowCtr).GetChildRows("CustomersOrders")


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User Comments

Title: disconnected architecture   
Name: kinjalpadashala
Date: 2012-02-14 3:19:39 AM
Comment:
p/z help me how to select the data in grid and bind of textbox.
Title: thank you   
Name: kartik
Date: 2011-03-24 1:04:35 AM
Comment:
is it posibile to insert the record enter at the 1st row of database every time?
Title: Ado.net Connected Architecture   
Name: Vidhya Patel, India(mota)
Date: 2011-03-08 11:27:53 PM
Comment:
I use this content in my Presentation....it's very useful for me....... so thanks a lot
Title: ado.net   
Name: Manimegalai
Date: 2010-09-15 3:31:43 AM
Comment:
That is great collection
thank u;;;;;;;;;;;;;;
Title: Thanks   
Name: Amin Anwar
Date: 2009-05-14 5:19:09 AM
Comment:
That isgr8 collection;;;
thanks
Title: Ado.net   
Name: Saurabh Shrivastava
Date: 2007-02-20 11:46:46 AM
Comment:
Brilliant Work,It could be more useful by giving some code in it.
Title: Thank you   
Name: Jayalakshmi baskaran
Date: 2006-05-30 5:39:23 AM
Comment:
I want to create the sqldataAdapter and the Dataset in Code
Can you please help it out
Title: Ado.Net   
Name: Rohan Ragoo
Date: 2006-01-09 12:37:59 PM
Comment:
Excellent Overview. All topics are dicussed in an effective timeline.
Title: XML   
Name: Rajesh Medackel,India
Date: 2005-10-01 5:26:30 AM
Comment:
Good write up .... Thanx
Title: ADO.Net   
Name: k
Date: 2005-05-03 11:31:30 AM
Comment:
to the authors thanks a lot for the unselfish information

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