usingsystem;usingsystem.collections.generic;usingsystem.linq;usingsystem.text;usingsystem.data.common;usingsystem.data;usingsystem.reflection;namespacedbhelpers
returndbhelper.dbparafactory;
}set
}privatestaticdbconnection _connection;/publicstaticdbconnection connection
elseif(_connection.state==connectionstate.closed)
_connection.open();
}elseif(_connection.state==connectionstate.broken)
_connection.close();
_connection.open();
}return_connection;
}publicstaticboolexists(stringsafesql)
publicstaticboolexists(stringsql,paramsdbparameter values)
//執行並返回影響行數/publicstaticintexecutecommand(stringsafesql)
dbcommand cmd=cmd=dbparafactory.getdbcommand();
cmd.connection=connection;
cmd.commandtype=commandtype.text;
cmd.commandtext=safesql;intresult=cmd.executenonquery();returnresult;
}//執行並返回影響行數publicstaticintexecutecommand(stringsql,paramsdbparameter values)
dbcommand cmd=dbparafactory.getdbcommand();
cmd.connection=connection;
cmd.commandtype=commandtype.text;
cmd.commandtext=sql;
cmd.parameters.addrange(values);returncmd.executenonquery();
}//執行並返回執行結果中的第一列/publicstaticobjectgetscalar(stringsafesql)
dbcommand cmd=dbparafactory.getdbcommand();
cmd.connection=connection;
cmd.commandtype=commandtype.text;
cmd.commandtext=safesql;objectresult=cmd.executescalar();returnresult;
}//執行並返回執行結果中的第一列publicstaticobjectgetscalar(stringsql,paramsdbparameter values)
dbcommand cmd=dbparafactory.getdbcommand();
cmd.connection=connection;
cmd.commandtype=commandtype.text;
cmd.parameters.addrange(values);
cmd.commandtext=sql;objectresult=cmd.executescalar();returnresult;
}//根據sql語句獲得datareader/publicstaticdbdatareader getreader(stringsafesql)
dbcommand cmd=dbparafactory.getdbcommand();
cmd.connection=connection;
cmd.commandtype=commandtype.text;
cmd.commandtext=safesql;
dbdatareader reader=cmd.executereader();returnreader;
}//根據sql語句獲得datareaderpublicstaticdbdatareader getreader(stringsql,paramsdbparameter values)
dbcommand cmd=dbparafactory.getdbcommand();
cmd.connection=connection;
cmd.commandtype=commandtype.text;
cmd.commandtext=sql;
cmd.parameters.addrange(values);
dbdatareader reader=cmd.executereader();returnreader;
}//根據sql語句獲得datatable/publicstaticdataset getdataset(stringsafesql)
dataset ds=newdataset();
dbcommand cmd=dbparafactory.getdbcommand();
cmd.connection=connection;
cmd.commandtype=commandtype.text;
cmd.commandtext=safesql;
dbdataadapter da=dbparafactory.getdbdataadapter();
da.selectcommand=cmd;
da.fill(ds);returnds;
}//根據sql語句獲得datatablepublicstaticdataset getdataset(stringsql,paramsdbparameter values)
dataset ds=newdataset();
dbcommand cmd=dbparafactory.getdbcommand();
cmd.connection=connection;
cmd.commandtype=commandtype.text;
cmd.commandtext=sql;
cmd.parameters.addrange(values);
dbdataadapter da=dbparafactory.getdbdataadapter();
da.selectcommand=cmd;
da.fill(ds);returnds;
}publicstaticdataadapter getdataadapter(stringsafesql)
dbcommand cmd=dbparafactory.getdbcommand();
cmd.connection=connection;
cmd.commandtype=commandtype.text;
cmd.commandtext=safesql;
dbdataadapter da=dbparafactory.getdbdataadapter();
da.selectcommand=cmd;returnda;
}//根據sql語句獲得datatablepublicstaticdataadapter getdataadapter(stringsql,paramsdbparameter values)
dbcommand cmd=dbparafactory.getdbcommand();
cmd.connection=connection;
cmd.commandtype=commandtype.text;
cmd.commandtext=sql;
cmd.parameters.addrange(values);
dbdataadapter da=dbparafactory.getdbdataadapter();
da.selectcommand=cmd;returnda;
}//dataset裝換為泛型集合/dataset///待轉換資料表索引///publicstaticilistdatasettoilist(dataset ds,inttableindex)
returnresult;
}//dataset裝換為泛型集合/dataset///待轉換資料表名稱//2008-08-01 22:47 hpdv2806publicstaticilistdatasettoilist(dataset ds,stringtablename)
returndatasettoilist(ds, _tableindex);
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