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

Try this

int sum = 0;
foreach (DataRow dr in dt.Rows)
{
     dynamic value = dr[index].ToString();
     if (!string.IsNullOrEmpty(value))
     { 
         sum += Convert.ToInt32(value);
     }
}