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Home/ Questions/Q 6016803
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Editorial Team
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Editorial Team
Asked: May 23, 20262026-05-23T03:02:09+00:00 2026-05-23T03:02:09+00:00

It appears I can use the .Where, .First, etc linq expressions in a Windows

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It appears I can use the .Where, .First, etc linq expressions in a Windows Phone 7 class library, but not Contains or FindIndex. Are they really not available at all, or is there something else I need to include to access them?

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  1. Editorial Team
    Editorial Team
    2026-05-23T03:02:10+00:00Added an answer on May 23, 2026 at 3:02 am

    Contains already exists in WP7

    System.Linq.Enumerable.Contains
    

    For FindIndex, a work arround like this should be sufficient

    var index = YourList.IndexOf(YourList.FirstOrDefault(selector));
    
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