Extract code snippets from how-to-retrieve-a-list-of-the-hidden-rows-or-columns-in-a-spreadsheet.md

[mikeebowen]

Closes #280

[learn-build-service-prod]

Learn Build status updates of commit f935b8c:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/spreadsheet/how-to-retrieve-a-list-of-the-hidden-rows-or-columns-in-a-spreadsheet.md	✅Succeeded
samples/spreadsheet/retrieve_a_list_of_the_hidden_rows_or_columns/cs/Program.cs	✅Succeeded
samples/spreadsheet/retrieve_a_list_of_the_hidden_rows_or_columns/vb/Program.vb	✅Succeeded

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
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[learn-build-service-prod]

Learn Build status updates of commit aaf4bfe:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/spreadsheet/how-to-retrieve-a-list-of-the-hidden-rows-or-columns-in-a-spreadsheet.md	✅Succeeded
samples/spreadsheet/retrieve_a_list_of_the_hidden_rows_or_columns/cs/Program.cs	✅Succeeded
samples/spreadsheet/retrieve_a_list_of_the_hidden_rows_or_columns/vb/Program.vb	✅Succeeded

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel