I found a solution in this forum. I changed the web config as:
From <add key="ChartImageHandler" value="storage=file;timeout=20;dir=c:\TempImageFiles\;" />To <add key="ChartImageHandler" value="storage=file;timeout=20;" />本文共 289 字，大约阅读时间需要 1 分钟。
I found a solution in this forum. I changed the web config as:
From <add key="ChartImageHandler" value="storage=file;timeout=20;dir=c:\TempImageFiles\;" />To <add key="ChartImageHandler" value="storage=file;timeout=20;" />转载于:https://www.cnblogs.com/Kazaf/archive/2011/11/21/2256795.html