Cross Product On DataTable Help.

Question

0.00/5 (No votes)

See more:

If i have a datatable that contains suppose one row e.g.

ID Name Phone
1 a 3456

and another Datatable that may contain any number of rows

ID Name Phone
2 b 1234
3 c 234
... ... ...

I wanna Create another datatable that will contain the cartesian product of the above two tables in .aspx.cs page e.g

1 2 ....
2 1 .....
1 3 ......
3 1 ......

Is it possible with Linq or some other way? Or there is any other alternative way to do It? Plz Help

Posted 13-Dec-12 20:14pm

sam_asp.net

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Sanjay Debnath · Answer 1 · 2012-12-13T20:45:00

Guess this is what you want... :) Two datatables named as dt1 & dt2 & combined one as dt3

C#

var combinedRows = from a in dt1.AsEnumerable()
                   from b in dt2.AsEnumerable()
                   select new { ColumnID1 = a["ID1"], ColumnID2 = b["ID2"] };
var dt3 = new DataTable();// Also Add columns after this line, like ID1, ID2 etc...
foreach (var item in combinedRows)
{
     row = dt3.NewRow();
     row["ID1"] = item.ColumnID1;
     row["ID2"] = item.ColumnID2;
     dt3.Rows.Add(row);
}
//Now dt3 has all combinations