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How to have a LINQ - Query Distinct()

How to have a LINQ - Query Distinct()

(OP)
Hi, After a gap, again I entered to Visual C++ 2010. Now my intention is to prepare a LINQ Query to select a distinct value from a datatable

In C# My Query

CODE --> Language

var ProjLnkQry = (from P in MyClass1.ProjTbl.AsEnumerable() select P["proj_name"]).Distinct().ToList(); 

The above query I try to convert it into VIsual C++

CODE --> Language

auto DistDepQry=(from v1 in MyGlobalData::ProjectTbl::AsEnumaerable() select v1["depart_name"])->Distinct()->ToList(); 

But not succeeded.... I found the error like "from" undeclared Identifier

Thanks for the ideas... .

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