/// <summary>
/// 更新一条数据
/// </summary>
public bool Update(Lythen.Model.stu_result model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("update stu_result set ");
strSql.Append("Stu_lesson_id=@Stu_lesson_id,");
strSql.Append("Stu_ item _id=@Stu_ item _id,");
strSql.Append("Stu_mark=@Stu_mark");
strSql.Append(" where Stu_id=@Stu_id");
SqlParameter[] parameters =
{
new SqlParameter("@Stu_lesson_id", SqlDbType.Int, 4),
new SqlParameter("@Stu_ item _id", SqlDbType.Int, 4),
new SqlParameter("@Stu_mark", SqlDbType.Float, 8),
new SqlParameter("@Stu_id", SqlDbType.Int, 4)
};
parameters[0].Value = model.Stu_lesson_id;
parameters[1].Value = model.Stu_item_id;
parameters[2].Value = model.Stu_mark;
parameters[3].Value = model.Stu_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.stu_result model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("insert into stu_result(");
strSql.Append("Stu_lesson_id,Stu_ item _id,Stu_mark)");
strSql.Append(" values (");
strSql.Append("@Stu_lesson_id,@Stu_ item _id,@Stu_mark)");
strSql.Append(";select @@IDENTITY");
SqlParameter[] parameters =
{
new SqlParameter("@Stu_lesson_id", SqlDbType.Int, 4),
new SqlParameter("@Stu_ item _id", SqlDbType.Int, 4),
new SqlParameter("@Stu_mark", SqlDbType.Float, 8)
};
parameters[0].Value = model.Stu_lesson_id;
parameters[1].Value = model.Stu_item_id;
parameters[2].Value = model.Stu_mark;
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.stu_result DataRowToModel(DataRow row)
{
Lythen.Model.stu_result model = new Lythen.Model.stu_result();
if (row != null)
{
if (row["Stu_id"] != null && row["Stu_id"].ToString() != "")
{
model.Stu_id = int.Parse(row["Stu_id"].ToString());
}
if (row["Stu_lesson_id"] != null && row["Stu_lesson_id"].ToString() != "")
{
model.Stu_lesson_id = int.Parse(row["Stu_lesson_id"].ToString());
}
if (row["Stu_ item _id"] != null && row["Stu_ item _id"].ToString() != "")
{
model.Stu_item_id = int.Parse(row["Stu_ item _id"].ToString());
}
if (row["Stu_mark"] != null && row["Stu_mark"].ToString() != "")
{
model.Stu_mark = decimal.Parse(row["Stu_mark"].ToString());
}
}
return(model);
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public Lythen.Model.stu_result GetModel(int Stu_id)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select top 1 Stu_id,Stu_lesson_id,Stu_ item _id,Stu_mark from stu_result ");
strSql.Append(" where Stu_id=@Stu_id");
SqlParameter[] parameters =
{
new SqlParameter("@Stu_id", SqlDbType.Int, 4)
};
parameters[0].Value = Stu_id;
Lythen.Model.stu_result model = new Lythen.Model.stu_result();
DataSet ds = DbHelperSQL.Query(strSql.ToString(), parameters);
if (ds.Tables[0].Rows.Count > 0)
{
return(DataRowToModel(ds.Tables[0].Rows[0]));
}
else
{
return(null);
}
}
