/*根据courseNo获取某条课程信息记录*/
public static ENTITY.Course_ getSomeCourse_(string courseNo)
{
/*构建查询sql*/
string sql = "select * from Course_ where courseNo='" + courseNo + "'";
SqlDataReader DataRead = DBHelp.ExecuteReader(sql, null);
ENTITY.Course_ course_ = new ENTITY.Course_();
/*如果查询存在记录，就包装到对象中返回*/
if (DataRead.Read())
{
course_.courseNo = DataRead["courseNo"].ToString();
course_.courseName = DataRead["courseName"].ToString();
course_.teacherName = DataRead["teacherName"].ToString();
course_.courseCount = Convert.ToInt32(DataRead["courseCount"]);
course_.courseScore = float.Parse(DataRead["courseScore"].ToString());
}
return(course_);
}
/*更新课程信息实现*/
public static bool EditCourse_(ENTITY.Course_ course_)
{
string sql = "update Course_ set courseName=@courseName,teacherName=@teacherName,courseCount=@courseCount,courseScore=@courseScore where courseNo=@courseNo";
/*构建sql参数信息*/
SqlParameter[] parm = new SqlParameter[] {
new SqlParameter("@courseName", SqlDbType.VarChar),
new SqlParameter("@teacherName", SqlDbType.VarChar),
new SqlParameter("@courseCount", SqlDbType.Int),
new SqlParameter("@courseScore", SqlDbType.Float),
new SqlParameter("@courseNo", SqlDbType.VarChar)
};
/*为参数赋值*/
parm[0].Value = course_.courseName;
parm[1].Value = course_.teacherName;
parm[2].Value = course_.courseCount;
parm[3].Value = course_.courseScore;
parm[4].Value = course_.courseNo;
/*执行更新*/
return((DBHelp.ExecuteNonQuery(sql, parm) > 0) ? true : false);
}
/*添加课程信息实现*/
public static bool AddCourse_(ENTITY.Course_ course_)
{
string sql = "insert into Course_(courseNo,courseName,teacherName,courseCount,courseScore) values(@courseNo,@courseName,@teacherName,@courseCount,@courseScore)";
/*构建sql参数*/
SqlParameter[] parm = new SqlParameter[] {
new SqlParameter("@courseNo", SqlDbType.VarChar),
new SqlParameter("@courseName", SqlDbType.VarChar),
new SqlParameter("@teacherName", SqlDbType.VarChar),
new SqlParameter("@courseCount", SqlDbType.Int),
new SqlParameter("@courseScore", SqlDbType.Float)
};
/*给参数赋值*/
parm[0].Value = course_.courseNo; //课程编号
parm[1].Value = course_.courseName; //课程名称
parm[2].Value = course_.teacherName; //任课老师
parm[3].Value = course_.courseCount; //总课时
parm[4].Value = course_.courseScore; //课程学分
/*执行sql进行添加*/
return((DBHelp.ExecuteNonQuery(sql, parm) > 0) ? true : false);
}