How to filter a List<>

Question

Hi!
How can I filter a List<> by one or two keywords? I would like to filter out all flowers that is yellow. I have tried the code below, but with no success.

this.DefaultViewModel["Groups"] = sampleDataGroups.Where<SampleDataGroup>(Item => Item.Color.Substring(0) == "yellow").ToString();

More info about my code on this page:

https://social.msdn.microsoft.com/Forums/windowsapps/en-US/69cab321-2a67-4dc9-9737-06b272a29c7a/different-sorting-in-listview?forum=winappswithcsharp#fc8b77d1-bf19-4758-a6a0-ee4c0dc5de9a

Thanks, Sigurd F

Answer 1

HI Sigurd

You shouldn't call "ToString()" at the end. Instead call "ToList()"

 sampleDataGroups.Where<SampleDataGroup>(Item => Item.Color.Substring(0) == "yellow").ToList();

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Thomas Claudius Huber

"If you can't make your app run faster, make it at least look & feel extremly fast"

My latest Pluralsight-courses:
XAML Layout in Depth
Windows Store Apps - Data Binding in Depth

twitter: @thomasclaudiush
homepage: www.thomasclaudiushuber.com

Answer 2

Yes, of cource. Thanks. I should have spotted that one :-)

Regards, Sigurd F

Answer 3

One more question: how do I write the code for filtering for more than one thing? I would like to filter on both color and location.

Thanks, Sigurd F

Answer 4

You can just add a and-condition with &&, like for example:

sampleDataGroups.Where<SampleDataGroup>(Item => Item.Color.Substring(0) == "yellow" && Item.Location.Substring(0) == "redmond").ToList();

---

Thomas Claudius Huber

"If you can't make your app run faster, make it at least look & feel extremly fast"

My latest Pluralsight-courses:
XAML Layout in Depth
Windows Store Apps - Data Binding in Depth

twitter: @thomasclaudiush
homepage: www.thomasclaudiushuber.com