Search DataTable in C#

Question

I have a DataTable with 36000 columns minimum, 20000 rows min. I have a hardcoded list of column names which I need to find in the datatable and perform some calculation on the values for each column.

eg Sum of all rows for a particular column

I was thinking of using a simple foreach to find the column name and datatable.compute method to perform my calculation.

Is there a better way of achieving this? Any help is greatly appreciated.

Thank you.

I am using .Net 4.6 and VS2015

Answer 1

For more performance its good to use parallel methods.

This link has a sample for you to use parallel and it is very Good to use it every where is possible.

At this example you see how much will improve your speed.

Answer 2

You can compare the performance difference between the Datatable.Compute and Foreach.

// Datatable.Compute sample
DataTable table;
table = dataSet.Tables["Orders"];

// Declare an object variable.
object sumObject;
sumObject = table.Compute("Sum(Total)", "EmpID = 5");

Below is a sample of foreach

// Foreach through DataTable
double sum = 0;
dt = ds.Tables["Orders"];
foreach (DataRow dr in dt.Rows)
{
    sum += System.Convert.ToDouble(dr["Total"]);
}