how to combine datatables in a dataset into a single datatable

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i have more than one datatable in a dataset how can i combine them into single datatable for eg

table 1 data is
A B C
1 2 3
4 5 6
7 8 9

table 2

A1 E F
1 3 4
4 5 10

now finally i want the table 1 in dataset should be

A B C E F
1 2 3 3 4
4 5 6 5 10
7 8 9

Posted 16-May-11 20:47pm

lakshmichawala

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Sandeep Mewara · Answer 1 · 2011-05-16T20:53:00

Solution 1

WAY #1:
Steps:
1. Have a new DataTable (DataTable dt = new DataTable();).
2. Add needed columns to it using dt.Columns.Add() method
3. Loop through both datatables above one by one
4. Copy the rows to new table - if it already exists then append it or else add a new row.

WAY #2:
Use Merge method: DataTable.Merge Method[^]

Try!

Posted 16-May-11 20:53pm

Sandeep Mewara

Updated 16-May-11 21:11pm

v2

Comments

lakshmichawala 17-May-11 3:03am

how to create columns to new datatable

Sandeep Mewara 17-May-11 3:11am

Updated reply. Now try!

Prasanta_Prince · Answer 2 · 2011-05-16T23:55:00

Solution 2

In query you can combine it into one.

SELECT col1, col2, col3 from Table1
union
SELECT col1, col2, col3 from Table2

Hope this can help you.

Posted 16-May-11 23:55pm

Prasanta_Prince