Remove duplicate rows if a column value matches

[ppr (Peter Preuss)]

@niro

hank you. i actually have more columns in the actual datatable and i’d need to group by 3 columns

Better to tell all complete requirements and needs at the begin

@niro

Math.Abs(1),

we didn’t mention such an usage of Math.Abs

@niro

Group d By k1=d(0).toString.Trim, d(1).toString.Trim, d(5).toString.Trim Into grp=Group

we would also use k2=…, k3=…

Also have a look here:

[HowTo] Overview on different options for grouping data and processing the groups

This HowTo introduces on the different options for grouping data from a datatable in order to process the grouped data. Introduction Grouping data and processing the grouped data is a common scenario e.g. when the grouped data is to aggregate like summing up, find maximum, get the average or concatening items. Lets have a look on following data: [grafik] A possible scenario could be: Create a report containing following information: the region code the sum of CaseCount per RegionCode t…

we can also combine LINQ and NON-Linq approaches