/// <summary>
/// 增加一条数据
/// </summary>
public int Add(Lythen.Model.subject model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("insert into subject(");
strSql.Append("Subject_title,Subject_info,Subject_parent)");
strSql.Append(" values (");
strSql.Append("@Subject_title,@Subject_info,@Subject_parent)");
strSql.Append(";select @@IDENTITY");
SqlParameter[] parameters =
{
new SqlParameter("@Subject_title", SqlDbType.VarChar, 20),
new SqlParameter("@Subject_info", SqlDbType.VarChar, 500),
new SqlParameter("@Subject_parent", SqlDbType.Int, 4)
};
parameters[0].Value = model.Subject_title;
parameters[1].Value = model.Subject_info;
parameters[2].Value = model.Subject_parent;
object obj = DbHelperSQL.GetSingle(strSql.ToString(), parameters);
if (obj == null)
{
return(0);
}
else
{
return(Convert.ToInt32(obj));
}
}
/// <summary>
/// 更新一条数据
/// </summary>
public bool Update(Lythen.Model.subject model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("update subject set ");
strSql.Append("Subject_title=@Subject_title,");
strSql.Append("Subject_info=@Subject_info,");
strSql.Append("Subject_parent=@Subject_parent");
strSql.Append(" where Subject_id=@Subject_id");
SqlParameter[] parameters =
{
new SqlParameter("@Subject_title", SqlDbType.VarChar, 20),
new SqlParameter("@Subject_info", SqlDbType.VarChar, 500),
new SqlParameter("@Subject_parent", SqlDbType.Int, 4),
new SqlParameter("@Subject_id", SqlDbType.Int, 4)
};
parameters[0].Value = model.Subject_title;
parameters[1].Value = model.Subject_info;
parameters[2].Value = model.Subject_parent;
parameters[3].Value = model.Subject_id;
int rows = DbHelperSQL.ExecuteSql(strSql.ToString(), parameters);
if (rows > 0)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public Lythen.Model.subject DataRowToModel(DataRow row)
{
Lythen.Model.subject model = new Lythen.Model.subject();
if (row != null)
{
if (row["Subject_id"] != null && row["Subject_id"].ToString() != "")
{
model.Subject_id = int.Parse(row["Subject_id"].ToString());
}
if (row["Subject_title"] != null)
{
model.Subject_title = row["Subject_title"].ToString();
}
if (row["Subject_info"] != null)
{
model.Subject_info = row["Subject_info"].ToString();
}
if (row["Subject_parent"] != null && row["Subject_parent"].ToString() != "")
{
model.Subject_parent = int.Parse(row["Subject_parent"].ToString());
}
}
return(model);
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public Lythen.Model.subject GetModel(int Subject_id)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select top 1 Subject_id,Subject_title,Subject_info,Subject_parent from subject ");
strSql.Append(" where Subject_id=@Subject_id");
SqlParameter[] parameters =
{
new SqlParameter("@Subject_id", SqlDbType.Int, 4)
};
parameters[0].Value = Subject_id;
Lythen.Model.subject model = new Lythen.Model.subject();
DataSet ds = DbHelperSQL.Query(strSql.ToString(), parameters);
if (ds.Tables[0].Rows.Count > 0)
{
return(DataRowToModel(ds.Tables[0].Rows[0]));
}
else
{
return(null);
}
}