//添加老师信息
public static bool add_teacher(model.Teacher teacher)
{
MySqlConnection conn = Util.getConn();
MySqlCommand command;
try
{
command = conn.CreateCommand();
command.CommandText = "INSERT INTO teacher(teacher_num,teacher_name,teacher_academy,password,sex,profession,id_number) VALUES('"
+ teacher.Teacher_num + "','" + teacher.Teacher_name + "','" +
teacher.Teacher_academy + "','" +
teacher.Password + "','" + teacher.Sex + "','" +
teacher.Profession + "','" + teacher.Id_number + "')";
Console.WriteLine("sql:" + command.CommandText);
command.ExecuteNonQuery();
}
catch (Exception)
{
return(false);
}
finally
{
if (conn.State == ConnectionState.Open)
{
conn.Close();
}
}
return(true);
}
public static void update(model.Teacher s)//修改学生信息
{
MySqlConnection conn = Util.getConn();
MySqlCommand command = null;
try
{
command = conn.CreateCommand();
string sql = "update teacher set teacher_name='" + s.Teacher_name + "',teacher_academy='" +
s.Teacher_academy + "',password='******',profession='" +
s.Profession + "',id_number='" + s.Id_number + "' where teacher_num='" +
s.Teacher_num + "'";
Console.Write("sql:" + sql);
command.CommandText = sql;
command.ExecuteNonQuery();
Console.WriteLine();
}
catch (Exception)
{
}
finally
{
if (conn.State == ConnectionState.Open)
{
conn.Close();
}
}
}
public static List <model.Teacher> find_teachers()//查询所有老师
{
MySqlConnection conn = Util.getConn();
MySqlDataReader dataReader = null;
MySqlCommand command = null;
List <model.Teacher> tea = new List <model.Teacher>();
string num = null;
try
{
command = conn.CreateCommand();
command.CommandText = "SELECT * FROM teacher";
dataReader = command.ExecuteReader();
Console.WriteLine("sql:" + command.CommandText);
while (dataReader.Read())
{
model.Teacher teacher = new model.Teacher();
teacher.Teacher_num = dataReader.GetString("teacher_num");
teacher.Teacher_name = dataReader.GetString("teacher_name");
teacher.Teacher_academy = dataReader.GetString("teacher_academy");
teacher.Profession = dataReader.GetString("profession");
teacher.Id_number = dataReader.GetString("id_number");
teacher.Password = dataReader.GetString("password");
teacher.Sex = dataReader.GetString("sex");
tea.Add(teacher);
}
}
catch (Exception)
{
}
finally
{
if (!dataReader.IsClosed)
{
dataReader.Close();
}
if (conn.State == ConnectionState.Open)
{
conn.Close();
}
}
return(tea);
}
//姚雅丽
public model.Teacher selectNum(string number)
{
MySqlConnection conn = util.Util.getConn();
MySqlDataReader dataReader = null;
MySqlCommand command = null;
model.Teacher r = new model.Teacher();
try
{
command = conn.CreateCommand();
command.CommandText = "SELECT * FROM teacher where teacher_num ='" + number + "'";
dataReader = command.ExecuteReader();
Console.WriteLine(command.CommandText);
while (dataReader.Read())
{
r.Teacher_num = dataReader.GetString(0);
r.Teacher_name = dataReader.GetString(1);
r.Teacher_academy = dataReader.GetString(2);
//r.Question = dataReader.GetString(3);
//r.Answer = dataReader.GetString(4);
r.Password = dataReader.GetString(3);
r.Sex = dataReader.GetString(4);
r.Profession = dataReader.GetString(5);
r.Id_number = dataReader.GetString(6);
return(r);
}
}
catch (Exception)
{
}
finally
{
if (!dataReader.IsClosed)
{
dataReader.Close();
}
if (conn.State == ConnectionState.Open)
{
conn.Close();
}
}
return(null);
}
public static model.Teacher find_teacher(string teacher_num)//根据学号查询学生信息
{
MySqlConnection conn = Util.getConn();
MySqlDataReader dataReader = null;
MySqlCommand command = null;
model.Teacher teacher = new model.Teacher();
try
{
command = conn.CreateCommand();
command.CommandText = "SELECT * FROM teacher where teacher_num='" + teacher_num + "'";
dataReader = command.ExecuteReader();
Console.WriteLine();
while (dataReader.Read())
{
teacher.Teacher_num = dataReader.GetString("teacher_num");
teacher.Teacher_name = dataReader.GetString("teacher_name");
teacher.Teacher_academy = dataReader.GetString("teacher_academy");
teacher.Profession = dataReader.GetString("profession");
teacher.Id_number = dataReader.GetString("id_number");
teacher.Password = dataReader.GetString("password");
teacher.Sex = dataReader.GetString("sex");
}
}
catch (Exception)
{
}
finally
{
if (!dataReader.IsClosed)
{
dataReader.Close();
}
if (conn.State == ConnectionState.Open)
{
conn.Close();
}
}
return(teacher);
}
public static List <model.Teacher> find_teachers2(model.Teacher s)//根据条件老师
{
MySqlConnection conn = Util.getConn();
MySqlDataReader dataReader = null;
MySqlCommand command = null;
List <model.Teacher> studs = new List <model.Teacher>();
string num = null;
try
{
command = conn.CreateCommand();
string sql = "SELECT * FROM teacher where";
bool shuru = false;//sql语句中是否已添加条件
if (s.Teacher_num != "")
{
sql = sql + " teacher_num='" + s.Teacher_num + "' ";
shuru = true;
}
if (s.Teacher_name != "")
{
if (shuru == true)
{
sql = sql + " and ";
}
sql = sql + " teacher_name='" + s.Teacher_name + "' ";
}
if (s.Teacher_academy != "")
{
if (shuru == true)
{
sql = sql + " and ";
}
sql = sql + " teacher_academy like '%" + s.Teacher_academy + "%' ";
}
if (s.Profession != "")
{
if (shuru == true)
{
sql = sql + " and ";
}
sql = sql + " profession='" + s.Profession + "' ";
}
Console.Write("sql:" + sql);
command.CommandText = sql;
dataReader = command.ExecuteReader();
Console.WriteLine();
while (dataReader.Read())
{
model.Teacher teacher = new model.Teacher();
teacher.Teacher_num = dataReader.GetString("teacher_num");
teacher.Teacher_name = dataReader.GetString("teacher_name");
teacher.Teacher_academy = dataReader.GetString("teacher_academy");
teacher.Profession = dataReader.GetString("profession");
teacher.Id_number = dataReader.GetString("id_number");
teacher.Password = dataReader.GetString("password");
teacher.Sex = dataReader.GetString("sex");
studs.Add(teacher);
}
}
catch (Exception)
{
}
finally
{
if (!dataReader.IsClosed)
{
dataReader.Close();
}
if (conn.State == ConnectionState.Open)
{
conn.Close();
}
}
return(studs);
}
