2024年3月21日发(作者：)

系统的部分源代码

using System;

using c;

using ;

using ;

using ;

using uration;

namespace 课程设计万次火柴ger

{

class dbManager

{

链接数据库

private DataSet ds = new DataSet();

private OleDbConnection conn()

{

OleDbConnection myconn = new OleDbConnection();

string mystr = tionStrings["课

程设计万次火柴tionStrings"].ToString();

tionString = mystr;

();

return myconn;

}

private void close()

{

conn().Close();

}

public void executeSql(string sql,string table)

{

OleDbDataAdapter sda = new

OleDbDataAdapter(sql,conn());

(ds,table);

}

public OleDbDataReader executeReaderSql(string sql)

{

OleDbCommand cmd = new OleDbCommand();

dText = sql;

tion = conn();

return eReader();

}

查找用户信息

public bool findUser(string userName, string pwd)

{

string mySel = "SELECT * FROM admin where userName='" +

userName + "'";

OleDbDataReader Dr;

Dr = executeReaderSql(mySel);

while (())

{

string DrPwd = Dr[2].ToString();

if (DrPwd == pwd)

{

return true;

}

}

();

return false;

}

添加管理员

public void addAdmin(string p)

{