Unable to use extension methods in .NET Jupyter Kernel

[jwood803]

Describe the bug

Testing out ML.NET with the .NET Jupyter Kernel and when trying to use the context.Data.LoadFromTextFile it gives the below error:

Unhandled Exception: (1,12): error CS1929: 'DataOperationsCatalog' does not contain a definition for 'LoadFromTextFile' and the best extension method overload 'TextLoaderSaverCatalog.LoadFromTextFile<HousingData>(DataOperationsCatalog, string, char, bool, bool, bool, bool)' requires a receiver of type 'DataOperationsCatalog'

I tried to add the context.Data as the first parameter to see if that works, but that results in a different error, which I'm thinking is because the LoadFromTextFile is an extension method.

Unhandled Exception: (1,25): error CS1501: No overload for method 'LoadFromTextFile' takes 7 arguments

Is there any way to use methods like these in the .NET Kernel?

Full notebook can be found here, if needed.

Did this error occur while using dotnet try or online?

• dotnet-try
• online

What kind of error was it?

• User Interface (UI): For example the output never displayed
• Service Error: For example "The service is temporarily unavailable. We are working on it"
• Other:

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[jonsequitur]

You can fix it by changing the last line from

var data = context.Data.LoadFromTextFile<HousingData>( context.Data, "./housing.csv", ',', true, false, false, false);

to

var data = context.Data.LoadFromTextFile<HousingData>( "./housing.csv", ',', true, false, false, false);