Using string.compare in a linq query where clause

Question

I am having a bit of trouble figuring out the exact syntax to use string.compare in the Where clause of a linq query. Below is what I have so far.

filteredApplications = AllApplications.Where(x => x.Name.Contains(string.Compare(x.Name, txtSearch.Text, StringComparison.OrdinalIgnoreCase))).ToList();

Is this even possible or am I barking up the wrong tree?

Rhonda

What are you trying to do? You are using Contains and Compare... — jrummell
– jrummell, Commented Mar 28, 2012 at 18:58

Justin Rusbatch · Accepted Answer · 2012-03-28 19:03:58Z

12

If you want to check to see if Name contains the search text:

AllApplications.Where(x => x.Name.ToUpperInvariant().Contains(txtSearch.Text.ToUpperInvariant()))).ToList();

If you want to check for equality:

AllApplications.Where(x => string.Equals(x.Name, txtSearch.Text, StringComparison.OrdinalIgnoreCase)).ToList();

In your original query, you were checking to see if x.Name contains the result of string.Compare. I assume you weren't trying to do this, since string.Compare returns an integer. string.Compare is used primarily for determining sort order.

edited Mar 28, 2012 at 19:03

answered Mar 28, 2012 at 18:46

Justin Rusbatch

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Khan · Accepted Answer · 2012-03-28 18:32:52Z

1

I believe you're looking for Equals if you're looking to match by equality:

filteredApplications = AllApplications.Where(x => x.Name.Equals(txtSearch.Text, StringComparison.OrdinalIgnoreCase)).ToList();

answered Mar 28, 2012 at 18:32

Khan

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