c# - Error while updating in database using dataset -


while running below code getting error

dynamic sql generation updatecommand not supported against selectcommand not return key column information.

tried doing many things nothing working. below code

 string queryup = "select node_a_objectid,node_z_objectid nddilinks";             string myconnectionstring = @"provider=microsoft.jet.oledb.4.0; data source=d:\tiptondb.mdb";             dataset dtup = new dataset();             using (oledbconnection myconnection = new oledbconnection())             {                 myconnection.connectionstring = myconnectionstring;                 oledbcommand cmd = new oledbcommand();                 cmd.connection = myconnection;                 myconnection.open();                 oledbdataadapter adp = new oledbdataadapter(queryup, myconnection);                 adp.fillschema(dtup, schematype.source, "nddilinks");                 adp.fill(dtup, "nddilinks");                  dtup.tables[0].rows[1][0] = 2350;                 adp.acceptchangesduringupdate = true;                  oledbcommandbuilder objcommandbuilder = new oledbcommandbuilder(adp);                 cmd.parameters.add("@node_a_objectid", oledbtype.integer, sizeof(int), "node_a_objectid");                 int a1 = adp.update(dtup, "nddilinks");                 dtup.acceptchanges();

i not selecting primary key 2 values node_a_objectid,node_z_objectid.do need select primary key ?

based on comment on post. must select primary key update work dataset, or can specify own update or insert query. may see this discussion on msdn


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