c# - data type mismatch in criteria expression error -

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con.close();  cmd = new oledbcommand(@"insert tbl_alltransactions values       (@transdate, @transtype, @transdesc, @transamount, @transcategory,        @transfreq, @transpayvia, @transpaid, @transtopay, @transnextpay,        @transstatus, @transmonth, @transweek, @transyear, @c_name ,@transmode)", con);  cmd.parameters.addwithvalue("@transdate", firstpay.toshortdatestring()); cmd.parameters.addwithvalue("@transtype", cbtranstype.text); cmd.parameters.addwithvalue("@transdesc", txtdesc.text); cmd.parameters.addwithvalue("@transamount", txtmoney.text); cmd.parameters.addwithvalue("@transcategory", cbcategory.text); cmd.parameters.addwithvalue("@transfreq", cbfreq.text); cmd.parameters.addwithvalue("@transpayvia", cbpay.text); cmd.parameters.addwithvalue("@transpaid", i); cmd.parameters.addwithvalue("@transtopay", txtpayments.text);  if (i <= (totpayments - 1)) {     cmd.parameters.addwithvalue("@transnextpay", nextpay.toshortdatestring()); }  if (i == totpayments) {     cmd.parameters.addwithvalue("@transnextpay", firstpay.toshortdatestring()); }              if (i <= (totpayments - 1)) {     transstatus = "uncleared";     cmd.parameters.addwithvalue("@transstatus", transstatus); }  if (i == totpayments) {     transstatus = "cleared";     cmd.parameters.addwithvalue("@transstatus", transstatus); }     cmd.parameters.addwithvalue("@transmonth", whichmonth); cmd.parameters.addwithvalue("@transweek", whichweek); cmd.parameters.addwithvalue("@transyear", whichyear); cmd.parameters.addwithvalue("@c_name", cname); transmode = cbduration.text; cmd.parameters.addwithvalue("@transmode", transmode); con.open(); int j = convert.toint32(cmd.executenonquery());  if (j == 1) {     j = 0;     //  nextpay = firstpay = datetime.now; } con.close();

using addwithvalue means datatype parameter value determined value itself. so, example, datatype of parameter @transdate string, not date because use toshortdatestring() conversion. of course requires field updated parameter string not date.

you need check, if every parameter goes update compatible field type, example parameter @transamount. database field string? pass text property of textbox, should string.

there potential problem. should sure parameters @transnextday , @transstatus added collection. current code present possibility these parameters not added (i > totpayments)


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