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Converting xlsx to html

Aspose.Cells Product Family
#1

Hello, trying to convert some excel files to html (from stream) we obtain a completely blank html: what we can correct?

This is our code (as in your website examples):

Aspose.Cells.HtmlSaveOptions OptionsC = new Aspose.Cells.HtmlSaveOptions();
OptionsC.ExportImagesAsBase64 = true;
((Aspose.Cells.Workbook)m_oDocument).Save(_oOutputStream, OptionsC);
#2

Hi,


Thanks for the code segment and details.

Please provide us your template Excel file and output HTML file to evaluate your issue, we will check it soon.

Thank you.
#3

Here they are.
Example attached… but it happened with different excel files of ours

#4

Hi,

Thanks for the template file.

I have tested your scenario/case a bit using the following sample code with your template file, it works fine and the output file (attached) is ok:
e.g
Sample code:

var wb = new Workbook(“e:\test2\GLOSSARI IQTRANSLATE.xlsx”);

var options = new HtmlSaveOptions(SaveFormat.Html)

{

ExportImagesAsBase64 = true,

};

wb.Save("e:\\test2\\out1GLOSSAR1.html", options);

I think since you are saving the Excel file to HTML memory stream which does not allow saving more than one sheet (in the workbook) at a time. I think you should either save your Excel workbook to MHTML file format or try saving different HTMLs for each sheet separately, you got to update/write your code accordingly.

Thank you.

#5
  • we tried to save as MHTML but the result is not reliable (see attached file)
    - can you suggest a sample code to save one html (stream) per sheet?
    - in our scenario we must use stream as input and output, so how we can handle excel conversion to html format (with embedded images and all others stuff)?

    thanks a lot
#6

Hi,

I have tested by converting your template file to MHtml file format and it works fine. See the following sample code and find attached the output .mhtml file for your reference:
e.g
Sample code:

var wb = new Workbook(“e:\test2\GLOSSARI IQTRANSLATE.xlsx”);

var options = new HtmlSaveOptions(SaveFormat.MHtml)

{

ExportImagesAsBase64 = true,

};

var stream = new MemoryStream();

wb.Save(stream, options);

string filename = "e:\\test2\\out1.mhtml";


FileStream fstream = new System.IO.FileStream(filename, FileMode.OpenOrCreate);

stream.Position = 0;

byte[] data = stream.ToArray();

fstream.Write(data, 0, data.Length);

And, I am afraid, as I told you in my previous reply that you cannot save to stream having a complete workbook (containing all the worksheets in it) to a single HTML file, you got to save only one worksheet to stream, so you may create separate HTML file for each worksheet in the workbook.

Thank you.

#7

Hi,

BooleServer:

- can you suggest a sample code to save one html (stream) per sheet?

See the sample code for your reference:
e.g
Sample code:

Aspose.Cells.License license = new Aspose.Cells.License();

license.SetLicense("Aspose.Cells.lic");


var wb = new Workbook("e:\\test2\\GLOSSARI IQTRANSLATE.xlsx");


var options = new HtmlSaveOptions(SaveFormat.Html)

{

ExportImagesAsBase64 = true,

ExportActiveWorksheetOnly = true


};

for (int i = 0; i < wb.Worksheets.Count; i++)

{

var stream = new MemoryStream();

wb.Worksheets.ActiveSheetIndex = i;

wb.Save(stream, options);

string filename = "e:\\test2\\out1" + i + ".html";


FileStream fstream = new System.IO.FileStream(filename, FileMode.OpenOrCreate);

stream.Position = 0;

byte[] data = stream.ToArray();

fstream.Write(data, 0, data.Length);

fstream.Close();

stream.Close();

Hope, this helps a bit.

Thank you.