usingsystem;usingsystem.configuration;usingmysql.data.mysqlclient;///
///testdatebase 的摘要說明///
public classtestdatebase
public static voidmain(string args)
mysqlconnection mysql=getmysqlcon();//查詢sql
string sqlsearch = "select * from student";//插入sql
string sqlinsert = "insert into student values (12,'張三',25,'大專')";//修改sql
string sqlupdate = "update student set name='李四' where id= 3";//刪除sql
string sqldel = "delete from student where id = 12";//列印sql語句
console.writeline(sqldel);//四種語句物件//mysqlcommand mysqlcommand = getsqlcommand(sqlsearch, mysql);//mysqlcommand mysqlcommand = getsqlcommand(sqlinsert, mysql);//mysqlcommand mysqlcommand = getsqlcommand(sqlupdate, mysql);
mysqlcommand mysqlcommand =getsqlcommand(sqldel, mysql);
mysql.open();//getresultset(mysqlcommand);//getinsert(mysqlcommand);//getupdate(mysqlcommand);
getdel(mysqlcommand);//記得關閉
mysql.close();
string readline=console.readline();
public staticmysqlconnection getmysqlcon()
string mysqlstr= "database=test;data source=127.0.0.1;user id=root;password=root;pooling=false;charset=utf8;port=3306";//string mysqlcon = configurationmanager.connectionstrings["mysqlcon"].connectionstring;
mysqlconnection mysql = newmysqlconnection(mysqlstr);returnmysql;
///建立執行命令語句物件///
public staticmysqlcommand getsqlcommand(string sql,mysqlconnection mysql)
mysqlcommand mysqlcommand= newmysqlcommand(sql, mysql);//mysqlcommand mysqlcommand = new mysqlcommand(sql); = mysql;
returnmysqlcommand;
///查詢並獲得結果集並遍歷///
public static voidgetresultset(mysqlcommand mysqlcommand)
mysqldatareader reader=mysqlcommand.executereader();trycatch(exception)
console.writeline("查詢失敗了！");
}finallycatch(exception ex)
string message=ex.message;
console.writeline("插入資料失敗了！" +message);
///修改資料///
public static voidgetupdate(mysqlcommand mysqlcommand)
catch(exception ex)
string message=ex.message;
console.writeline("修改資料失敗了！" +message);
///刪除資料///
public static voidgetdel(mysqlcommand mysqlcommand)
catch(exception ex)
string message=ex.message;
console.writeline("刪除資料失敗了！" +message);
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