Hi Megumi,
Thank you very much for using Syncfusion products.
We have ExcelDownloadType.Open and ExcelDownloadType.PrombtDialog which are store the excel file in local host and we can open it using MSExcel. Currently, we dont have the support to open the file with in browser.
We are having the workaround that sainge the worksheet or workbook as an HTML and open it in the browser.
Please go through the following link for saving the workbook as an HTML.
http://help.syncfusion.com/ug_92/Reporting/XlsIO/ASP.NET/default.htm?turl=Documents%2Fsheetorganization.htmGiven below the code snippet used to save the workbook as an HTML and opening in the browser.
//Saving workbook
workbook.SaveAsHtml(Server.MapPath("Sample.html"), HtmlSaveOptions.Default);
//Opening with the browser
ClientScript.RegisterClientScriptBlock(this.GetType(), "open", "window.open('Sample.html','_blank');", true);
We ae implementing the Excel Viewer and it will be avilable in the next release and we can make use of it to open the workbook in an browser.
Please let us know if you require any further clarifications.
Thanks,
Sridhar.S