newbie question - chart.toimage looks much different - Aspose.Cells for .NET, Java and Reporting Services

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newbie question - chart.toimage looks much different

Last post 07-02-2008, 1:27 PM by Amjad Sahi. 3 replies.


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07-02-2008, 7:52 AM 133965

mtagliaf
Joined on 07-02-2008
Posts 2

newbie question - chart.toimage looks much different

Attachment: Present (inaccessible)

Hello,

I am brand new to Aspose. We are considering using it as a charting engine in a Winforms VB.NET program. To test it, I took one of our existing spreadsheets, opened it using Aspose, and saved one of the charts in the spreadsheets to a jpg using the .ToImage function. Below is the code I used.

The resultant chart doesn't contain any of the formatting of the original chart in the spreadsheet. Colors are different among other things.

I have attached a side by side showing the chart as it looks in Excel (left), and as it looked after the Aspose.ToImage method. Is there a way to get the two to look identical?

thank you,
matt tagliaferri

Dim wb As Workbook
        Dim ws As Worksheet
        Dim c As Chart

        wb = New Workbook
        Try
            wb.Open("C:\Documents and Settings\mtagliaf\Desktop\Datasheet2.xlsx", FileFormatType.Excel2007Xlsx)
            ws = wb.Worksheets(0)
            c = ws.Charts(1)
            c.ToImage("c:\testimage.jpg")
        Catch ex As Exception
            Debug.WriteLine(ex.Message)
        End Try

07-02-2008, 9:12 AM 134015 in reply to 133965

Amjad Sahi
Joined on 08-30-2006
Posts 5,095

Re: newbie question - chart.toimage looks much different

Hi,

Thanks for considering Aspose.

Could you post your template excel file. We will check the issue soon.

Thank you.

Amjad Sahi
Support Developer,
Aspose Nanjing Team
Contact Us

07-02-2008, 9:45 AM 134034 in reply to 134015

mtagliaf
Joined on 07-02-2008
Posts 2

Re: newbie question - chart.toimage looks much different

Attachment: Present (inaccessible)

File attached. I also modified my test code to export ALL charts on the first page (there are 5 charts in the sample spreadsheet). That test code is below (all work done in folder C:\Temp)

Using this test code, all 5 chart images do get exported, but all have the default Excel colors.

thanks for your prompt attention
matt tagliaferri

   Dim wb As Workbook
   Dim ws As Worksheet
   Dim c As Chart
   Dim cName As String

        wb = New Workbook
        Try
            wb.Open("C:\Temp\DatasheetAspose.xlsx", FileFormatType.Excel2007Xlsx)
            ws = wb.Worksheets(0)
            For i As Integer = 0 To ws.Charts.Count - 1
                c = ws.Charts(i)
                cName = "c:\temp\testimage"
                cName &= i.ToString
                cName &= ".jpg"
                c.ToImage(cName)
            Next
        Catch ex As Exception
            Debug.WriteLine(ex.Message)
        End Try

07-02-2008, 1:27 PM 134078 in reply to 134034

Amjad Sahi
Joined on 08-30-2006
Posts 5,095

Re: newbie question - chart.toimage looks much different

Hi,

Thanks for providing us the template file.

Since you are exporting chart contained in an .xlsx file to images, well, exporting and manipulating charts in .xlsx files are not completely supported so you got formattings lost. We are working on the charts (in .xlsx files) feature, hopefully we will support it in our future versions.

Thank you.

Amjad Sahi
Support Developer,
Aspose Nanjing Team
Contact Us

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