asp.net - Export Gridview connected to MYSQL data to excel -

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i have simple form created in visual studio (vb) has data gridview connected table in mysql (hosted in remote server).

i have below code export grid view excel takes long time export (around 15 minutes).

the table in mysql small (1000 rows , 60 columns).

is there better way export complete mysql table excel?

please help

code:

 dim xlapp microsoft.office.interop.excel.application         dim xlworkbook microsoft.office.interop.excel.workbook         dim xlworksheet microsoft.office.interop.excel.worksheet         dim misvalue object = system.reflection.missing.value         dim integer         dim j integer           xlapp = new microsoft.office.interop.excel.application         xlworkbook = xlapp.workbooks.add(misvalue)         xlworksheet = xlworkbook.sheets("sheet1")         = 0 datagridview1.rows.count - 1             j = 0 datagridview1.columns.count - 1                 k integer = 1 datagridview1.columns.count                     on error resume next                     xlworksheet.cells(1, k) = datagridview1.columns(k - 1).headertext                     xlworksheet.cells(i + 2, j + 1) = datagridview1(j, i).value.tostring()                 next             next         next         xlworksheet.saveas("c:\users\username\desktop\vbexcel.xlsx")         xlworkbook.close()

is there 2 ways :

  1. using rdlc reports.
  2. using gridview exporting.

first way need created rdlc report, retrieving data datatable, call code:

dim mydatasource reportdatasource = new reportdatasource("reportdataset", mydatatable)         reportviewer1.localreport.reportpath = server.mappath("myrdlcreportpath")         rvsmartcardsissues.localreport.enableexternalimages = true         rvsmartcardsissues.localreport.datasources.clear()         rvsmartcardsissues.localreport.datasources.add(mydatasource )         rvsmartcardsissues.localreport.refresh()          dim warnings warning() = nothing         dim streamids string() = nothing         dim mimetype string = nothing         dim encoding string = nothing         dim extension string = nothing         dim bytes byte()         bytes = rvsmartcardsissues.localreport.render("excel", nothing, mimetype, encoding, extension, streamids, warnings)         httpcontext.current.response.buffer = true         httpcontext.current.response.clear()         httpcontext.current.response.contenttype = mimetype         httpcontext.current.response.addheader("content-disposition", "attachment; filename=exportedfilename.xls")         httpcontext.current.response.binarywrite(bytes)         httpcontext.current.response.flush()         httpcontext.current.response.end()

second way based on function :

public shared sub exportgridviewtoexcelgridview(byval filename string, byref gvr gridview, byref currentpage page)      dim htmlform system.web.ui.htmlcontrols.htmlform = new system.web.ui.htmlcontrols.htmlform()     currentpage.controls.add(htmlform)     htmlform.controls.add(gvr)      currentpage.response.clear()     currentpage.response.buffer = true     currentpage.response.addheader("content-disposition", "attachment; filename=" & filename)     currentpage.response.contenttype = "application/vnd.ms-excel"     currentpage.response.contentencoding = system.text.encoding.utf8     currentpage.response.charset = ""     currentpage.enableviewstate = false     using strwriter new stringwriter         dim htmlwrt htmltextwriter = new htmltextwriter(strwriter)         htmlform.rendercontrol(htmlwrt)         htmlwrt.flush()         currentpage.response.write(strwriter.tostring)         currentpage.response.end()     end using end sub

make sure when use second way set gridview paging property false.


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