Not able to export chart as image

[abhishekpandya24]

I have a customized chart and i am not able to export that chart as image. I am getting error
"Value cannot be null.\r\n Parameter name: interior".

I am using the following code:.

Workbook workbook = new Workbook();
workbook.LoadFromFile(@"D:\Test Excel\Timeline.xlsx");
Worksheet sheet = workbook.Worksheets[0];
Image[] imgs = workbook.SaveChartAsImage(sheet);
for (int i = 0; i < imgs.Length; i++)
{
imgs[i].Save(string.Format("img-{0}.png", i), ImageFormat.Png);
}

The above code works fine for some graphs but for the attached excel it doesn't.

[Betsy.jiang]

Dear abhishekpandya24,

Thanks for your inquiry.
I have reproduced the issue and posted it to our Dev team. We will let you know when it is fixed.
Sorry for inconvenience caused.

Sincerely,
Betsy
E-iceblue support team

[Betsy.jiang]

Dear abhishekpandya24,

Thanks for your waiting.
Now the exception issue has been resolved, welcome to test Spire.XLS Pack Hotfix Version:7.11.1. Also, we found the result image has issue, and our Dev team will continue to fix it. Once it is fixed, we will inform you again.

Sincerely,
Betsy
E-iceblue support team

[Betsy.jiang]

Dear abhishekpandya24,

Did you test the hotfix ? Could you please give us some feedback at your convenience ?

Sincerely,
Betsy
E-iceblue support team

[abhishekpandya24]

Hi Team,

After applying the hotfix the error which was coming is resolved however the image created of the graph is not proper. No contents in the image.

Thanks,
Abhishek

[Betsy.jiang]

Hi Abhishek,

Thanks for your feedback.
Yes, we already noticed the issue and our Dev team is working on it. We will inform you when it is fixed.
Sorry for inconvenience.

Sincerely,
Betsy
E-iceblue support team

[abhishekpandya24]

Thanks for the update team. Will wait for the update!!!

[Betsy.jiang]

Dear abhishekpandya24,

Thanks for your waiting.
Now the issue you submitted has some updates, welcome to test Spire.XLS Pack Hotfix Version:7.11.34.
But there still are some issues on the result image, our Dev team will continue to working on them. Once there is any news, we will notify you soon.

Sincerely,
Betsy
E-iceblue support team