Solved

How to append another datatable to an existing dataset

Posted on 2008-10-23
3
759 Views
Last Modified: 2013-11-07
hi there,
I have an exisitng datatset with two datatables combined. Now the need to add another datatable makes me confuse on how to add it to the existing relationship. below is the code i have for the relacionship how can i add the Lawyer datatable to the dsaddresses dataset?

Thanks,
jsctehcy
Public Shared Function GetAddresses(ByVal Case_Number As String) As DataSet
 
            'datatables repository
            Dim dsAddresses As DataSet = New DataSet
            Dim Relation As DataRelation
 
            'Create the Address datatable
            dsAddresses.Tables.Add(GetAddress(Case_Number))
            dsAddresses.Tables(0).TableName = "Address"
 
            'Create Registered Agent Datatable
            dsAddresses.Tables.Add(GetRegisteredAgent(Case_Number))
            dsAddresses.Tables(1).TableName = "RegisterAgent"
 
            'Create Lawyer Datatable
            dsAddresses.Tables.Add(GetAttorney(Case_Number))
            dsAddresses.Tables(2).TableName = "Lawyer"
 
            'create relation betwen Address and Registered Agent tables
            Relation = New DataRelation("CASE_NUMBER", dsAddresses.Tables("Address").Columns("CASE_NUMBER"), dsAddresses.Tables("RegisterAgent").Columns("CASE_NUMBER"))
            dsAddresses.Relations.Add(Relation)
 
            'return the datatables repository
            Return dsAddresses
 
        End Function

Open in new window

0
Comment
Question by:jsctechy
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 18

Expert Comment

by:UnifiedIS
ID: 22789226
It looks like you just need to create another relation to hook up the Lawyer table

Relation = New DataRelation("CASE_NUMBER_Lawyer", dsAddresses.Tables("Address").Columns("CASE_NUMBER"), dsAddresses.Tables("Lawyer").Columns("CASE_NUMBER"))

dsAddresses.Relations.Add(Relation)
0
 
LVL 1

Author Comment

by:jsctechy
ID: 22789416
ok you got me all confuse can you post the entire code?

why do i have relation twice that does not seems to be right?
0
 
LVL 18

Accepted Solution

by:
UnifiedIS earned 500 total points
ID: 22789478
You need 2 relations, one that connects address and registeredagent and a second one to connect Address to Lawyer


  'datatables repository
            Dim dsAddresses As DataSet = New DataSet
            Dim Relation As DataRelation
 
            'Create the Address datatable
            dsAddresses.Tables.Add(GetAddress(Case_Number))
            dsAddresses.Tables(0).TableName = "Address"
 
            'Create Registered Agent Datatable
            dsAddresses.Tables.Add(GetRegisteredAgent(Case_Number))
            dsAddresses.Tables(1).TableName = "RegisterAgent"
 
            'Create Lawyer Datatable
            dsAddresses.Tables.Add(GetAttorney(Case_Number))
            dsAddresses.Tables(2).TableName = "Lawyer"
 
            'create relation betwen Address and Registered Agent tables
            Relation = New DataRelation("CASE_NUMBER", dsAddresses.Tables("Address").Columns("CASE_NUMBER"), dsAddresses.Tables("RegisterAgent").Columns("CASE_NUMBER"))
            dsAddresses.Relations.Add(Relation)
 
'creates relation between address and lawyer tables 
Relation = New DataRelation("CASE_NUMBER_Lawyer", dsAddresses.Tables("Address").Columns("CASE_NUMBER"), dsAddresses.Tables("Lawyer").Columns("CASE_NUMBER"))
dsAddresses.Relations.Add(Relation)
 
            'return the datatables repository
            Return dsAddresses

Open in new window

0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This document covers how to connect to SQL Server and browse its contents.  It is meant for those new to Visual Studio and/or working with Microsoft SQL Server.  It is not a guide to building SQL Server database connections in your code.  This is mo…
It’s quite interesting for me as I worked with Excel using vb.net for some time. Here are some topics which I know want to share with others whom this might help. First of all if you are working with Excel then you need to Download the Following …
If you're a developer or IT admin, you’re probably tasked with managing multiple websites, servers, applications, and levels of security on a daily basis. While this can be extremely time consuming, it can also be frustrating when systems aren't wor…
If you’ve ever visited a web page and noticed a cool font that you really liked the look of, but couldn’t figure out which font it was so that you could use it for your own work, then this video is for you! In this Micro Tutorial, you'll learn yo…

729 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question