Sum comma values in datable


I have datable with values, most of them are values with decimals. I`m converting comma to dot and then sum in one variable as below. The problem is that method is incorrect. For example value:

12,1235 will turn in to 12.1235 ( it will read as 12 thousands instead of twelve with decimal ,1235 ) so my total sum is incorrect. :frowning:

For each row in datable:

Thank you from above!

HI @Add_Bddd ,

Do you want 12,000 to be read as twelve or twelve thousand?

If it has to be intepreted as 12, then you can sum all the values either using a For Each Activity like so:
Assign to Sum


Or by using LINQ(which is super fast, and recommended if your DataTable is large)->

Dt.AsEnumerable().Sum(Function(s) Convert.ToDouble(s("values").ToString.Trim.Replace(",",".")))

Kind Regards,
Ashwin A.K

1 Like

We can sum the column values of all rows and its column by a single line statement

Assign Activity:
LHS: mySum | Datatype: Double

dtData.AsEnumerable.Sum(Function (x) Double.Parse(x("values").toString.Trim, new System.Globalization.CultureInfo("de-DE")))

we would recommend to implement it via this Culture approach instead of String manipulations as we do have a controlled fail, when the format is not as expected. Also it avoids side effects as a valid string of 1.234,56 would not be changed to 1.234.56

Last line introduce the rounding, for more nice values

Find starter help here:
ColComputations_Sum_CommaSeperator.xaml (6.6 KB)


@ppr @ashwin.ashok

Both marked as solution, thank you so much guys!

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