How to check count files inside Res is equal 1 or not ?

[engahmedbarbary]

I work on c# app I face Issue I need to check count of files inside result equal 1 or not ?

when I use count res.count count not display AS Int license .

so by any way I need to check on result variable if returned one file or bigger than 1

so How to do that Please ?

static void Main(string[] args)
{
DataTable dataTable = GetData();

var res = from row in dataTable.AsEnumerable()
group row by row["Files"] into g
select g;

if(res.count ==1 )
{
}
else
{
}


}


public static DataTable GetData()
{
DataTable dataTable = new DataTable();
dataTable.Columns.Add("PartId", typeof(int));
dataTable.Columns.Add("Company", typeof(string));
dataTable.Columns.Add("Files", typeof(string));
dataTable.Columns.Add("Tab", typeof(string));
dataTable.Columns.Add("Module", typeof(int));

dataTable.Rows.Add(1222,"micro","Abc","source",1);
dataTable.Rows.Add(1321, "silicon", "Abc", "Types", 3);
dataTable.Rows.Add(1444, "cd2", "AutoD", "Rev", 10);
dataTable.Rows.Add(1321, "cd3", "AutoD", "source", 11);
dataTable.Rows.Add(1541,"mtvscro", "AutoD", "Rev", 12);
dataTable.Rows.Add(9811, "tvs2", "Mog", "Dal", 6);
dataTable.Rows.Add(1901, "tvs3", "Mog", "Mondo", 6);
dataTable.Rows.Add(2111, "toyo", "Mog", "Pingo", 7);

return dataTable;
}

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