vb.net - Line breaks lost when exporting datagrid to excel in CSV format WPF -


this works fine, assuming there no line breaks in cells.

        dgvresults.selectallcells()         dgvresults.clipboardcopymode = datagridclipboardcopymode.includeheader         applicationcommands.copy.execute(nothing, dgvresults)         dim result [string] = directcast(clipboard.getdata(dataformats.commaseparatedvalue), string)         clipboard.clear()         dgvresults.unselectallcells()          try             dim file new system.io.streamwriter("c:\export.csv")             file.writeline(result)             file.close()             process.start("c:\export.csv")         catch ex exception             messagebox.show(ex.message, "error")         end try

this how add line breaks

        dim x new list(of string)         each item in res.properties("proxyaddresses")             x.add(item)         next         allsmtpaddresses = string.join(controlchars.lf, x)

when export this, doesn't take consideration there line breaks, , ignores them... excel formatting little wonky. i've tried: environment.newline, vbcrlf, , controlchars.lf. think excel doesn't know line breaks, w.e wants, , creates new rows them.

any idea on how attack this?

updated results @jimmy

enter image description here

this it's supposed like...

enter image description here

i don't believe possible without modifying rows prior export. found example code may help,

  public sub writecsv(grid1 object, outputfile string)     ' create csv file grid data exported.     dim sw new streamwriter(outputfile)     ' first write headers.     dim dt datatable = directcast(grid1.datasource, dataset).tables(0)      dim icolcount integer = dt.columns.count     integer = 0 icolcount - 1         sw.write(dt.columns(i))         if < icolcount - 1             sw.write(",")         end if     next     sw.write(sw.newline)     ' write rows.     each dr datarow in dt.rows         integer = 0 icolcount - 1             sw.write("""") 'lets encapsulate fields in quotes, quoted csv file!             if not convert.isdbnull(dr(i))                 sw.write(dr(i).tostring())             end if             sw.write("""")             if < icolcount - 1                 sw.write(system.globalization.cultureinfo.currentculture.textinfo.listseparator)             end if         next         sw.write(sw.newline)     next     sw.close() end sub

modified here


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