Cfrgtkky

I'm attempting to access a C# component in UWP, but I get an unhelpful error when doing so: WinRTError: Unknown runtime error. Why does this error occur, and how can I stop it?

I'm using Windows 10, VS 2017, and building my project to meet the minimum version of 10.0.16299.0

Here's a MVCE showing the behavior: https://github.com/re-jim/UWPComponentSample

The C# component is set as a reference in my Javascript component.

Javascript:

The below function triggers the C# component, which should zip a directory

async zip(content) {

    try {

        console.log('ZipComponent is ', ZipComponent)

        console.log('function is ', ZipComponent.ZipWorker.zipDirectory)

        ZipComponent.ZipWorker.zipDirectory(content.dirPath, content.dirPath + '\file.ezdrm')

    } catch (err) {

        console.log('err is ',err)

    }

}

I've console.logged the component and the method I intend to use to show that exists:

C#

using System;

using System.Diagnostics;

using System.IO.Compression;



namespace ZipComponent

{

    public sealed class ZipWorker

    {



        public static void ZipDirectory(string folderPath, string outputFile)

        {

            try

            {

                Debug.WriteLine("zippping " + folderPath + " output " + outputFile);

                ZipFile.CreateFromDirectory(folderPath, outputFile);

            }

            catch (Exception e)

            {

                Debug.Write(e);

            }



        }



        public static void UnzipDirectory(string zipFile, string outputPath)

        {

            try

            {

                Debug.WriteLine("unzippping " + zipFile + " output " + outputPath);

                ZipFile.ExtractToDirectory(zipFile, outputPath);

            }

            catch (Exception e)

            {

                Debug.Write(e);

            }

        }

    }

}

I don't see the output from Debug.WriteLine in my output

The code inside of ZipDirectory() doesn't seem to be causing the error. I replaced the function with:

public static string ZipDirectory(){



    return "hello world"

}

after also editing the javascript function call to match, And that gives me the same error as below.

Stack trace:

"WinRTError: Unknown runtime error

   at ZipService.prototype.zip (ms-appx://9ecba615-ddcd-4c3c-a8f1-a09e9aac3e60/dist/zip.service.js:12:13)

   at Generator.prototype.next (native code)

   at onZipRequest (ms-appx://9ecba615-ddcd-4c3c-a8f1-a09e9aac3e60/dist/wrapperMain.js:69:9)

   at Generator.prototype.next (native code)

   at SafeSubscriber.prototype.__tryOrUnsub (ms-appx://9ecba615-ddcd-4c3c-a8f1-a09e9aac3e60/dist/rxjs/rxjs.umd.js:477:13)

   at SafeSubscriber.prototype.next (ms-appx://9ecba615-ddcd-4c3c-a8f1-a09e9aac3e60/dist/rxjs/rxjs.umd.js:415:17)

   at Subscriber.prototype._next (ms-appx://9ecba615-ddcd-4c3c-a8f1-a09e9aac3e60/dist/rxjs/rxjs.umd.js:359:9)

   at Subscriber.prototype.next (ms-appx://9ecba615-ddcd-4c3c-a8f1-a09e9aac3e60/dist/rxjs/rxjs.umd.js:336:13)

   at Subject.prototype.next (ms-appx://9ecba615-ddcd-4c3c-a8f1-a09e9aac3e60/dist/rxjs/rxjs.umd.js:755:17)

   at AppShellService.prototype.zipContent (ms-appx://9ecba615-ddcd-4c3c-a8f1-a09e9aac3e60/dist/main.js:197:13)"