/// <summary>
/// DataTable转换为list
/// </summary>
/// <param name="dt"></param>
/// <returns></returns>
protected static List <BookVolume> DataTableToList(DataTable dt)
{
List <BookVolume> Ms = new List <BookVolume>();
for (int i = 0; i < dt.Rows.Count; i++)
{
BookVolume M = new BookVolume();
M.ID = dt.Rows[i]["ID"].ToInt64();
M.BookID = dt.Rows[i]["BookID"].ToInt32();
M.Booktitle = dt.Rows[i]["booktitle"].ToString();
M.Booknclass = dt.Rows[i]["booknclass"].ToString();
Ms.Add(M);
}
return(Ms);
}
/// <summary>
/// 根据条件语句取得第一个实体
/// </summary>
/// <param name="m_where">条件语句，不包含“where”</param>
/// <returns></returns>
public static BookVolume Find(string m_where)
{
IDbHelper Sql = GetHelper();
BookVolume M = new BookVolume();
DbDataReader Rs = Sql.ExecuteReader(CommandType.Text, "select [ID],[BookID],[booktitle],[booknclass] from [BookVolume] where " + m_where, true);
if (!Rs.Read())
{
M.ID = long.MinValue;
}
else
{
M.ID = Rs["ID"].ToInt64();
M.BookID = Rs["BookID"].ToInt32();
M.Booktitle = Rs["booktitle"].ToString();
M.Booknclass = Rs["booknclass"].ToString();
}
Rs.Close();
Rs = null;
return(M);
}
/// <summary>
/// 将修改过的实体修改到数据库
/// </summary>
/// <param name="M">赋值后的实体</param>
/// <returns></returns>
public static int Update(BookVolume M)
{
IDbHelper Sql = GetHelper();
StringBuilder sb = new StringBuilder();
sb.Append("update [BookVolume] set ");
sb.Append("[BookID]=" + M.BookID.ToS());
sb.Append(",");
sb.Append("[booktitle]=N'" + M.Booktitle + "'");
sb.Append(",");
sb.Append("[booknclass]=N'" + M.Booknclass + "'");
sb.Append(" where ID='" + M.ID + "'");
sb.Append("");
if (DataBase.CmsDbType == DataBase.DbType.SqlServer)
{
sb.Append(";select @@ROWCOUNT");
}
if (DataBase.CmsDbType == DataBase.DbType.SQLite)
{
sb.Append(";select 0");
}
if (DataBase.CmsDbType == DataBase.DbType.MySql)
{
sb.Append(";SELECT ROW_COUNT()");
}
if (DataBase.CmsDbType == DataBase.DbType.Access)
{
sb.Append(";select 0");
}
if (DataBase.CmsDbType == DataBase.DbType.Oracle)
{
sb.Append(";select SQL%ROWCOUNT");
}
return(Sql.ExecuteScalar(CommandType.Text, sb.ToString()).ToInt32());
}
/// <summary>
/// 将数据插入表
/// </summary>
/// <param name="M">赋值后的实体</param>
/// <returns></returns>
public static void Insert(BookVolume M)
{
IDbHelper Sql = GetHelper();
StringBuilder sb = new StringBuilder();
sb.Append("insert into [BookVolume]([ID],[BookID],[booktitle],[booknclass]) values(");
sb.Append(M.BookID.ToS());
sb.Append(",");
sb.Append("N'" + M.Booktitle + "'");
sb.Append(",");
sb.Append("N'" + M.Booknclass + "'");
sb.Append(")");
if (DataBase.CmsDbType == DataBase.DbType.SqlServer)
{
sb.Append(";select @@Identity");
}
if (DataBase.CmsDbType == DataBase.DbType.SQLite)
{
sb.Append(";select last_insert_rowid()");
}
if (DataBase.CmsDbType == DataBase.DbType.MySql)
{
sb.Append(";select LAST_INSERT_ID()");
}
if (DataBase.CmsDbType == DataBase.DbType.Access)
{
sb.Append(";select max(ID) from BookVolume");
}
if (DataBase.CmsDbType == DataBase.DbType.Oracle)
{
sb.Append(";select LAST_INSERT_ID()");
}
M.ID = Sql.ExecuteScalar(CommandType.Text, sb.ToString()).ToInt32();
}
public static BookVolume CreateBookVolume(long id, int bookID)
{
BookVolume bookVolume = new BookVolume();
bookVolume.ID = id;
bookVolume.BookID = bookID;
return bookVolume;
}
public void AddToBookVolume(BookVolume bookVolume)
{
base.AddObject("BookVolume", bookVolume);
}
