Invalid character exception when adding Metadata to a CloudBlob

Question

Task

Upload a file to Azure Blob Storage with the original filename and also assign the filename as meta-data to the CloudBlob

Answer 1

Just have had confirmation from the azure-sdk-for-net team on GitHub that only ASCII characters are valid as data within blob meta-data.

joeg commented:
The supported characters in the blob metadata must be ASCII characters. To work around this you can either escape the string ( percent encode), base64 encode etc.

Source on GitHub

So as a work-around, either:

• escape the string (percent encode), base64 encode, etc, as suggested by joeg
• use the techniques that I have mentioned in my other answer.