Question

There are three columns in the datatable

Amount Commission Others
1000   200        100
2000   100        200

Now I want to build another column based on these three columns name totalAmount that is the sum of these three columns like the column will be

totalAmount
1300
2300

I got the records of the three columns Amount,Commission and Others and based on those columns I have a need of adding a new column in that datatable.We can manuall fetch and make total and add a new column in that datatable but is there any other good and short way ?

Answer 1

Check out the DataColumn.Expression property.

You can add a new DataColumn to your table, and set its Expression to “Amount + Commission + Others”. It’ll be calculated at runtime.