Cannot not get the row index by IndexOf after the DataTable was Select and Sort

[ppr (Peter Preuss)]

@opas1216
there could be few options that can be checked:

• in one scenario we marked the SourceDataTable with an additional rowIndex Column, did all the actions on a copyDataTable and when forwarding the date filtered data we just removed the rowIndex Column.

If you are interested on how to add the rowIndex let me know.

Another approach could be: lets assume a row in CopyDataTable was identified (called drCFound)
SequenceEquals via the itemArrays can be checked for the index

SourceDataTable.asEnumerable.toList.FindIndex(function ( r ) r.ItemArray.SequenceEqual(drCFound.ItemArray))

More Info here:

Enumerable.SequenceEqual Method (System.Linq)

[HowTo] - Find Duplicate / NonDuplicate rows - checking all columns - without explicit listing the colnames/index

Introduction In the majority of scenarios duplicated / Non duplicated rows can be identified by a few columns grace to the key column concept. In order to retrieve it, the group by approach helps It can be done e.g. with some nice components from Connect or LINQ In some scenarios all duplicated / non duplicated rows should be detected by checking all columns. Setting up an approach without explicit listing all column names or column index would speed up the implementation. Implementat…

Let us know if you need further help