/// <summary>
/// 更新一条数据
/// </summary>
public bool Update(Lythen.Model.lesson model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("update lesson set ");
strSql.Append("Lesson_subject_id=@Lesson_subject_id,");
strSql.Append("Lesson_title=@Lesson_title,");
strSql.Append("Lesson_info=@Lesson_info");
strSql.Append(" where Lesson_id=@Lesson_id");
SqlParameter[] parameters =
{
new SqlParameter("@Lesson_subject_id", SqlDbType.Int, 4),
new SqlParameter("@Lesson_title", SqlDbType.VarChar, 100),
new SqlParameter("@Lesson_info", SqlDbType.Text),
new SqlParameter("@Lesson_id", SqlDbType.Int, 4)
};
parameters[0].Value = model.Lesson_subject_id;
parameters[1].Value = model.Lesson_title;
parameters[2].Value = model.Lesson_info;
parameters[3].Value = model.Lesson_id;
int rows = DbHelperSQL.ExecuteSql(strSql.ToString(), parameters);
if (rows > 0)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 增加一条数据
/// </summary>
public int Add(Lythen.Model.lesson model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("insert into lesson(");
strSql.Append("Lesson_subject_id,Lesson_title,Lesson_info)");
strSql.Append(" values (");
strSql.Append("@Lesson_subject_id,@Lesson_title,@Lesson_info)");
strSql.Append(";select @@IDENTITY");
SqlParameter[] parameters =
{
new SqlParameter("@Lesson_subject_id", SqlDbType.Int, 4),
new SqlParameter("@Lesson_title", SqlDbType.VarChar, 100),
new SqlParameter("@Lesson_info", SqlDbType.Text)
};
parameters[0].Value = model.Lesson_subject_id;
parameters[1].Value = model.Lesson_title;
parameters[2].Value = model.Lesson_info;
object obj = DbHelperSQL.GetSingle(strSql.ToString(), parameters);
if (obj == null)
{
return(0);
}
else
{
return(Convert.ToInt32(obj));
}
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public Lythen.Model.lesson DataRowToModel(DataRow row)
{
Lythen.Model.lesson model = new Lythen.Model.lesson();
if (row != null)
{
if (row["Lesson_id"] != null && row["Lesson_id"].ToString() != "")
{
model.Lesson_id = int.Parse(row["Lesson_id"].ToString());
}
if (row["Lesson_subject_id"] != null && row["Lesson_subject_id"].ToString() != "")
{
model.Lesson_subject_id = int.Parse(row["Lesson_subject_id"].ToString());
}
if (row["Lesson_title"] != null)
{
model.Lesson_title = row["Lesson_title"].ToString();
}
if (row["Lesson_info"] != null)
{
model.Lesson_info = row["Lesson_info"].ToString();
}
}
return(model);
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public Lythen.Model.lesson GetModel(int Lesson_id)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select top 1 Lesson_id,Lesson_subject_id,Lesson_title,Lesson_info from lesson ");
strSql.Append(" where Lesson_id=@Lesson_id");
SqlParameter[] parameters =
{
new SqlParameter("@Lesson_id", SqlDbType.Int, 4)
};
parameters[0].Value = Lesson_id;
Lythen.Model.lesson model = new Lythen.Model.lesson();
DataSet ds = DbHelperSQL.Query(strSql.ToString(), parameters);
if (ds.Tables[0].Rows.Count > 0)
{
return(DataRowToModel(ds.Tables[0].Rows[0]));
}
else
{
return(null);
}
}
