C# Chat曲线图,在发布之后出现错误 Invalid temp directory in chart handler configuration c:\TempImageFiles\

First error message: Invalid temp directory in chart handler configuration c:\TempImageFiles\

Solution: Changed dir in ChartImageHandler app settings in web.config

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<appSettings>      <add key="ChartImageHandler" value="storage=file;timeout=20;dir=c:\TempImageFiles\;"/> </appSettings>

Then this error message: The temp directory in chart handler configuration is not accessible c:\xxx\images\

Followed error message suggestion and added access rights to directory (Properties – Security tab) for user NETWORK SERVICE

[Update: Other error message that can appear:
a) “Access to the path ‘C:\xxx\images\charts\chart.png’ is denied.” – this is the same as above, add rights for NETWORK SERVICE
b) “Could not find a part of the path ‘C:\xxx\images\charts\chart.png’.” – make sure directory exists or create it]

ConseQuently,make sure directory exists or create it.