How to calculate the sum of the datatable column in asp.net?

Question

I have a DataTable which has 5 columns:

• ID
• Name
• Account Number
• Branch
• Amount

The DataTable contains 5 rows.

Answer 1

You can do like..

DataRow[] dr = dtbl.Select("SUM(Amount)");
txtTotalAmount.Text = Convert.ToString(dr[0]);