excel - OleDb set Data Source to load file window - 


private sub button_import_click(sender object, e eventargs) handles button_import.click     try         dim myconnection oledb.oledbconnection         dim ds system.data.dataset         dim myadapter system.data.oledb.oledbdataadapter          myconnection = new system.data.oledb.oledbconnection(string.format("provider=microsoft.ace.oledb.12.0;data source='c:\users\matil\desktop\kontaktdaten.xlsx';extended properties=excel 8.0"))         myadapter = new system.data.oledb.oledbdataadapter("select * [kontaktdaten$]", myconnection)         ds = new system.data.dataset         myadapter.fill(ds)         me.datagridview_kontakte.datasource = ds.tables(0)     catch ex exception         msgbox(ex.message)     end try end sub

in above code, i’m importing excel data file datagridview, want make possible user choose own data source in load file window. how can achieve that?, tryed modifying code this, error "the microsoft acces database cannot open or write file".

dim path new openfiledialog() myconnection = new system.data.oledb.oledbconnection(string.format("provider=microsoft.ace.oledb.12.0;data source={0};extended properties=excel 8.0", path))

to answer comment, problem easy handle. use code filename:

    dim indlg new openfiledialog     indlg.defaultext = "csv"     indlg.filter = "texte|*.txt|csv-files|*.csv|alle files|*.*"     indlg.title = "textdatei"     indlg.multiselect = false     if indlg.showdialog <> dialogresult.ok         messagebox.show("funktionsabbruch.", "info", messageboxbuttons.ok, messageboxicon.information)         exit sub     end if

in case, there line missing:

myconnection = new system.data.oledb.oledbconnection(string.format("provider=microsoft.ace.oledb.12.0;data source=" & indlg.filename & ";extended properties=excel 8.0"))

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