Read all data from excel and store into list

[ppr (Peter Preuss)]

@ashukla7836
Welcome to the forum

give a try on following:

Groups | List(of List(of Datarow)) =

(From d in dtData.AsEnumerable
Group d by k=d("Location").toString.Trim into grp=Group
Where grp.Count > 1
Select grp.ToList).ToList

[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…