linq to fetch index of string array

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var _Col_Name_lst = (from DataColumn x in _hdr[0].Table.Columns
select x.ColumnName).ToArray();

_Col_Name_lst ----- This has a collection of string array

like

0 - EMl

1 - AZEER

2 - VISTA

--------

Here in above collection, i require array index of EMI or AZEER or VISTA whichever i pass to a linq.

so using linq on above collection --- "_Col_Name_lst "

i require index of any values EMI or AZEER or VISTA whichever i pass

Posted 20-May-13 23:18pm

anbujeremiah

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vijay__p · Answer 1 · 2013-05-20T23:22:00

Solution 1

try below code

C#

var index=0;
var _Col_Name_lst = (from DataColumn x in _hdr[0].Table.Columns
 select new {
      RowIndex = index++, 
      ColumnName = x.ColumnName}).ToArray();

In the new list RowIndex will contain the index of each column name.

Posted 20-May-13 23:22pm

vijay__p

here2learn.net · Answer 2 · 2013-05-28T03:43:00

Solution 2

C#

var result = _Col_Name_lst.Select((s, i) => new { Pos = i, text =s})
.Where(currentItem => currentItem.text.ToUpper()=="AZEER") //select matching item only
.Select(n=> n.Pos);// select only what you want, i.e. just position of item

Note: here result will just store index value of matching item

Posted 28-May-13 3:43am

here2learn.net

Updated 28-May-13 3:48am

v3

Comments

here2learn.net 29-May-13 9:44am

Thanks for formatting Tadit... :-)
I am still learning CP's posting interface...