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Thread: [RESOLVED] NET 5.0 got DllImport CS0246 error

  1. #1

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    Resolved [RESOLVED] NET 5.0 got DllImport CS0246 error

    First touch NET 5.0, but I got CS0246 error, don't know what is the reason.
    Refer to screenshot.
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  2. #2
    .NUT jmcilhinney's Avatar
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    Re: NET 5.0 got DllImport CS0246 error

    So when you showed potential fixes, as instructed by Intellisense, what did it suggest?

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    Frenzied Member KGComputers's Avatar
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    Re: NET 5.0 got DllImport CS0246 error

    Quote Originally Posted by DaveDavis View Post
    First touch NET 5.0, but I got CS0246 error, don't know what is the reason.
    Refer to screenshot.
    If this is a .NET Core Console App or WPF, the System.Runtime.InteropServices namespace is listed in Dependencies->Frameworks->Microsoft.NETCore.App, so you should be able to use the DllImport attribute class.
    Otherwise, the DllImport could be misspelled.

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    Re: NET 5.0 got DllImport CS0246 error

    Intellisense is nothing when I am keying in DllImport; The NET Core is different from Winform NETFramework...But sure something is wrong with what I am doing...
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  5. #5
    Frenzied Member KGComputers's Avatar
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    Re: NET 5.0 got DllImport CS0246 error

    If System.Runtime.InteropServices is listed under Microsoft.NETCore.App, but errors occur when referencing these classes, then there must be something wrong with the Visual Studio IDE. I tried adding DllImport attribute in .NET Core Winforms project Form1 class without error(s).
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  6. #6
    .NUT jmcilhinney's Avatar
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    Re: NET 5.0 got DllImport CS0246 error

    Quote Originally Posted by DaveDavis View Post
    Intellisense is nothing when I am keying in DllImport
    Ugh. Look at the screenshot you provided in post #1. See the Intellisense popup? See how it provides the option to show potential fixes? Maybe you should use that.

  7. #7

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    Re: NET 5.0 got DllImport CS0246 error

    OK.
    I recreate the project, then I see DllImport is intellisensed.
    First touching NET CORE gives me a lesson, but it is good to learn something. Thank you everyone.

    Edited: I replace the *.csproj with the new one, the problem also goes away.
    Last edited by DaveDavis; Sep 30th, 2021 at 08:47 PM.

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