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Editorial Team
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Editorial Team
Asked: May 13, 20262026-05-13T15:06:26+00:00 2026-05-13T15:06:26+00:00

Is this an idiomatic way to convert a Guid to a Guid? ? new

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Is this an idiomatic way to convert a Guid to a Guid??

new Guid?(new Guid(myString));
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  1. Editorial Team
    Editorial Team
    2026-05-13T15:06:26+00:00Added an answer on May 13, 2026 at 3:06 pm

    No, this is:

    Guid? foo = new Guid(myString);
    

    There’s an implicit conversion from T to Nullable<T> – you don’t need to do anything special. Or if you’re not in a situation where the implicit conversion will work (e.g. you’re trying to call a method which has overloads for both the nullable and non-nullable types), you can cast it:

    (Guid?) new Guid(myString)
    
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