codestrprovider = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=E:\lastdb.mdb";
OleDbConnection con = new OleDbConnection(strprovider);
strcommand = "select * from lasttable";
da = new OleDbDataAdapter(strcommand, con);
DataRow mydr;
DataSet mydataset = new DataSet();
DataSet ds = new DataSet();
da.Fill(mydataset);
mydr = mydataset.Tables[0].NewRow();
mydr["username"] = a;
mydr["password"] = b;
mydataset.Tables[0].Rows.Add(mydr);
OleDbCommandBuilder ocb = new OleDbCommandBuilder(da);
da.Update(mydataset);
<----(ERROR LINE 65) da.Fill(ds);
ERRORSystem.Data.OleDb.OleDbException: Syntax error in INSERT INTO statement.
at System.Data.Common.DbDataAdapter.UpdatedRowStatusErrors(RowUpdatedEventArgs rowUpdatedEvent, BatchCommandInfo[] batchCommands, Int32 commandCount)
at System.Data.Common.DbDataAdapter.UpdatedRowStatus(RowUpdatedEventArgs rowUpdatedEvent, BatchCommandInfo[] batchCommands, Int32 commandCount)
at System.Data.Common.DbDataAdapter.Update(DataRow[] dataRows, DataTableMapping tableMapping)
at System.Data.Common.DbDataAdapter.UpdateFromDataTable(DataTable dataTable, DataTableMapping tableMapping)
at System.Data.Common.DbDataAdapter.Update(DataSet dataSet, String srcTable)
at System.Data.Common.DbDataAdapter.Update(DataSet dataSet)
at Service.dbinsert(String a, String b) in e:\WebSite1\App_Code\Service.cs:line 65