Dynamic Linq select statement

Question

I have a statement like this =

var result =
    from c in displayedUsers
    select
    new string[]
    {
        c.GetType().GetProperty(columnList[0]).GetValue(c, null).ToString(),
        c.GetType().GetProperty(columnList[1]).GetValue(c, null).ToString(),
        c.GetType().GetProperty(columnList[2]).GetValue(c, null).ToString(),
        c.GetType().GetProperty(columnList[3]).GetValue(c, null).ToString()
    };

What I want to know is if it's possible to not have to have a static list length (in this case you can see there are only 4 items)

How would I do this if I had N number of columns in the 'columnList' array?

Something along the lines of =

var result =
    from c in displayedUsers
    select
    new string[]
    {
        foreach item in columnList GetValue
        ...
    };

Thanks!

What Type is columnList?

damienc88
– damienc88

2013-12-09 22:43:06 +00:00
Commented Dec 9, 2013 at 22:43 — damienc88
– damienc88, Commented Dec 9, 2013 at 22:43

jessehouwing · Accepted Answer · 2013-12-09 22:50:19Z

2

Something like this should work:

var columnList = new []{"cola", "colb"};
var result = from c in displayUsers
             select
             (
                 (
                     from col in Columnlist
                     select c.GetType().GetProperty(col).GetValue(c, null).ToString()
                 ).ToArray();
             )

answered Dec 9, 2013 at 22:50

jessehouwing

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Comments

David Osborne · Accepted Answer · 2013-12-09 22:51:58Z

0

If columnList can be cast or converted to a List then there's the ForEach method that could be used.

answered Dec 9, 2013 at 22:51

David Osborne

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