c# - Problems by inserting values from textboxes -

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i'm trying insert current date database , allways message(when press button on form save access database), data type incorect in conditional expression. code:

string constring = "provider=microsoft.jet.oledb.4.0;"          + "data source=c:\\users\\simon\\desktop\\save.mdb";              oledbconnection empconnection = new oledbconnection(constring);               string insertstatement = "insert obroki_save "                                  + "([id_uporabnika],[id_zivila],[skupaj_kalorij]) "                                  + "values (@id_uporabnika,@id_zivila,@skupaj_kalorij)";              oledbcommand insertcommand = new oledbcommand(insertstatement, empconnection);              insertcommand.parameters.add("@id_uporabnika", oledbtype.char).value = users.idtextbox.text;                             insertcommand.parameters.add("@id_zivila", oledbtype.char).value = idtextbox.text;             insertcommand.parameters.add("@skupaj_kalorij", oledbtype.char).value = textbox1.text;             empconnection.open();              try             {                int count = insertcommand.executenonquery();             }             catch (oledbexception ex)             {                 messagebox.show(ex.message);             }                         {                 empconnection.close();                 textbox1.clear();                 textbox2.clear();                 textbox3.clear();                 textbox4.clear();                 textbox5.clear();             }

i have cut out date,( made access paste date ), still there same problem. first line ok? users.idtextbox.text? please !

try changing

insertcommand.parameters.add("@datum", oledbtype.char).value = datetime.now;

to

 `insertcommand.parameters.add("@datum", oledbtype.char).value        = datetime.now.tostring("dd mmm yyyy hh:mm");`

( or other acceptable date format)


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