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Home/ Questions/Q 840257
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Editorial Team
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Editorial Team
Asked: May 15, 20262026-05-15T05:35:41+00:00 2026-05-15T05:35:41+00:00

I have a msbuild task that outputs to a file. Now I want to

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I have a msbuild task that outputs to a file.

Now I want to search that file for a certain text or regex expression and return true if it is there and false if it isn’t

any idea of a task that could do this for me?

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  1. Editorial Team
    Editorial Team
    2026-05-15T05:35:42+00:00Added an answer on May 15, 2026 at 5:35 am

    If you’re using MSBuild 4 (with Visual Studio 2010), you can use Property Functions and do this without any custom task:

    <IsMyFileMatching>$([System.Text.RegularExpressions.Regex]::IsMatch($([System.File]::ReadAllText("yourfile"), "pattern")))</IsMyFileMatching>
    
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