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DataSet DataRelation

Posted on 2008-06-10
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Last Modified: 2010-05-18
Hi,

I have a problem to build the data relation in DataSet.  
My DataSet contains two datatable.

Table1 has two foriegn key wich is a pair of unique key.  Table 2 has a value plus those two foriegn key.
I only know to build the single primary key mapping to another primarity between two tables.  
SUCH AS ds.Relations.Add("IsellGroup", ds.Tables[0].Columns[0], ds.Tables[1].Columns[0]);
Please help to resolve this problem.  Thank you.
Sample data
table 1
ID1 ID2
1    2
2   2
1   3
2   5

table 2
ID1  ID2 COL
1      2    5
1     2     6
1     3     8
0
Comment
Question by:power98888
  • 3
4 Comments
 
LVL 18

Expert Comment

by:philipjonathan
ID: 21756637
Use DataColumn array:

ds.Relations.Add("IsellGroup",
  new DataColumn[] {ds.Tables[0].Columns[0], ds.Tables[0].Columns[1]},
  new DataColumn[] {ds.Tables[1].Columns[0], ds.Tables[1].Columns[0]}
);
0
 
LVL 18

Accepted Solution

by:
philipjonathan earned 500 total points
ID: 21756639
Typo-error in my prev post, my apologies

Use DataColumn array:

ds.Relations.Add("IsellGroup",
  new DataColumn[] {ds.Tables[0].Columns[0], ds.Tables[0].Columns[1]},
  new DataColumn[] {ds.Tables[1].Columns[0], ds.Tables[1].Columns[1]}
);
0
 

Author Closing Comment

by:power98888
ID: 31466004
Thank you
0
 
LVL 18

Expert Comment

by:philipjonathan
ID: 21757576
Thanks for the generous points
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