c# - Embed object in Excel programmatically -


i've tried several libraries, including epplus, npoi , can insert images, couldn't find how insert objects(pdf's, text files, images) as files. there way or library in .net? thanks!

using code able embed pdf file, txt file , , png file excel using c#. 

    public static class excelreaderfunctions {          public static void excelinsertole(string path) {              microsoft.office.interop.excel.application excel = new application();             excel.workbooks.add();                         microsoft.office.interop.excel.workbook workbook = excel.activeworkbook;             microsoft.office.interop.excel.worksheet sheet = workbook.activesheet;              oleobjects oleobjects =    (microsoft.office.interop.excel.oleobjects)                 sheet.oleobjects(type.missing);                          oleobjects.add(                 type.missing,   // classtype                 path,           // filename                 true,           // link                 false,          // displayasicon                 type.missing,   // iconfilename                 type.missing,   // iconindex                 type.missing,   // iconlabel                 type.missing,   // left                 type.missing,   // top                 type.missing,   // width                 type.missing    // height             );              excel.visible = true;             workbook.close(true);             excel.quit();         }     }

then call function path of object want embed:

    excelreaderfunctions.excelinsertole(@"c:\my.pdf");     excelreaderfunctions.excelinsertole(@"c:\my.txt");     excelreaderfunctions.excelinsertole(@"c:\my.png");

resource:

msdn oledbobjects.add method


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