/// <summary>
/// 获取实体（异步方式）
/// </summary>
/// <param name="strWhere">参数化查询条件(例如: and Name = @Name )</param>
/// <param name="dict">参数的名/值集合</param>
/// <returns></returns>
public virtual async Task <U_GuestBookEntity> GetEntityAsync(string strWhere, Dictionary <string, object> dict = null)
{
U_GuestBookEntity obj = null;
string strSQL = "select top 1 * from U_GuestBook where 1=1 " + strWhere;
using (NullableDataReader reader = await Task.Run(() => _DB.GetDataReader(strSQL, dict)))
{
if (reader.Read())
{
obj = GetEntityFromrdr(reader);
}
}
return(obj);
}
/// <summary>
/// 把实体类转换成键/值对集合
/// </summary>
/// <param name="entity"></param>
/// <param name="dict"></param>
private static void GetParameters(U_GuestBookEntity entity, Dictionary <string, object> dict)
{
dict.Add("ID", entity.ID);
dict.Add("GuestName", entity.GuestName);
dict.Add("GuestOicq", entity.GuestOicq);
dict.Add("GuestMsn", entity.GuestMsn);
dict.Add("GuestEmail", entity.GuestEmail);
dict.Add("GuestContent", entity.GuestContent);
dict.Add("GuestIsPrivate", entity.GuestIsPrivate);
dict.Add("GuestFace", entity.GuestFace);
dict.Add("GuestHomepage", entity.GuestHomepage);
dict.Add("GuestImages", entity.GuestImages);
dict.Add("AdminReply", entity.AdminReply);
dict.Add("AdminReplyTime", entity.AdminReplyTime);
}
/// <summary>
/// 通过数据读取器生成实体类
/// </summary>
/// <param name="rdr"></param>
/// <returns></returns>
private static U_GuestBookEntity GetEntityFromrdr(NullableDataReader rdr)
{
U_GuestBookEntity info = new U_GuestBookEntity();
info.ID = rdr.GetInt32("ID");
info.GuestName = rdr.GetString("GuestName");
info.GuestOicq = rdr.GetString("GuestOicq");
info.GuestMsn = rdr.GetString("GuestMsn");
info.GuestEmail = rdr.GetString("GuestEmail");
info.GuestContent = rdr.GetString("GuestContent");
info.GuestIsPrivate = rdr.GetBoolean("GuestIsPrivate");
info.GuestFace = rdr.GetString("GuestFace");
info.GuestHomepage = rdr.GetString("GuestHomepage");
info.GuestImages = rdr.GetString("GuestImages");
info.AdminReply = rdr.GetString("AdminReply");
info.AdminReplyTime = rdr.GetNullableDateTime("AdminReplyTime");
return(info);
}
/// <summary>
/// 增加一条记录，返回新的ID号。需要有一个单一主键，并且开启有标识符属性（异步方式）
/// </summary>
/// <param name="entity">实体模型</param>
/// <returns></returns>
public virtual async Task <int> InsertAsync(U_GuestBookEntity entity)
{
if (entity.ID <= 0)
{
entity.ID = GetNewID();
}
Dictionary <string, object> dict = new Dictionary <string, object>();
GetParameters(entity, dict);
string strSQL = "insert into U_GuestBook (" +
"ID," +
"GuestName," +
"GuestOicq," +
"GuestMsn," +
"GuestEmail," +
"GuestContent," +
"GuestIsPrivate," +
"GuestFace," +
"GuestHomepage," +
"GuestImages," +
"AdminReply," +
"AdminReplyTime) " +
"values(" +
"@ID," +
"@GuestName," +
"@GuestOicq," +
"@GuestMsn," +
"@GuestEmail," +
"@GuestContent," +
"@GuestIsPrivate," +
"@GuestFace," +
"@GuestHomepage," +
"@GuestImages," +
"@AdminReply," +
"@AdminReplyTime)";
if (await Task.Run(() => _DB.ExeSQLResult(strSQL, dict)))
{
return(DataConverter.CLng(entity.ID));
}
return(-1);
}
/// <summary>
/// 增加一条记录
/// </summary>
/// <param name="entity">实体模型</param>
/// <returns></returns>
public virtual bool Add(U_GuestBookEntity entity)
{
if (entity.ID <= 0)
{
entity.ID = GetNewID();
}
Dictionary <string, object> dict = new Dictionary <string, object>();
GetParameters(entity, dict);
string strSQL = "insert into U_GuestBook (" +
"ID," +
"GuestName," +
"GuestOicq," +
"GuestMsn," +
"GuestEmail," +
"GuestContent," +
"GuestIsPrivate," +
"GuestFace," +
"GuestHomepage," +
"GuestImages," +
"AdminReply," +
"AdminReplyTime) " +
"values(" +
"@ID," +
"@GuestName," +
"@GuestOicq," +
"@GuestMsn," +
"@GuestEmail," +
"@GuestContent," +
"@GuestIsPrivate," +
"@GuestFace," +
"@GuestHomepage," +
"@GuestImages," +
"@AdminReply," +
"@AdminReplyTime)";
return(_DB.ExeSQLResult(strSQL, dict));
}
/// <summary>
/// 更新一条记录（异步方式）
/// </summary>
/// <param name="entity">实体模型</param>
/// <returns></returns>
public virtual async Task <bool> UpdateAsync(U_GuestBookEntity entity)
{
Dictionary <string, object> dict = new Dictionary <string, object>();
GetParameters(entity, dict);
string strSQL = "Update U_GuestBook SET " +
"GuestName = @GuestName," +
"GuestOicq = @GuestOicq," +
"GuestMsn = @GuestMsn," +
"GuestEmail = @GuestEmail," +
"GuestContent = @GuestContent," +
"GuestIsPrivate = @GuestIsPrivate," +
"GuestFace = @GuestFace," +
"GuestHomepage = @GuestHomepage," +
"GuestImages = @GuestImages," +
"AdminReply = @AdminReply," +
"AdminReplyTime = @AdminReplyTime" +
" WHERE " +
"ID = @ID";
return(await Task.Run(() => _DB.ExeSQLResult(strSQL, dict)));
}
/// <summary>
/// 增加或更新一条记录（异步方式）
/// </summary>
/// <param name="entity">实体模型</param>
/// <param name="IsSave">是否增加</param>
/// <returns></returns>
public virtual async Task <bool> AddOrUpdateAsync(U_GuestBookEntity entity, bool IsSave)
{
return(IsSave ? await AddAsync(entity) : await UpdateAsync(entity));
}
/// <summary>
/// 增加或更新一条记录
/// </summary>
/// <param name="entity">实体模型</param>
/// <param name="IsSave">是否增加</param>
/// <returns></returns>
public virtual bool AddOrUpdate(U_GuestBookEntity entity, bool IsSave)
{
return(IsSave ? Add(entity) : Update(entity));
}
