DataReader方式 获取数据

///

/// 得到一个对象实体 DataReader方式
///

///
/// 成功返回对象模型，失败返回null
public DotNet.Model.Base_Department GetModelUseDR(long Id)
{

		StringBuilder strSql=new StringBuilder();
		strSql.Append("Select  Top 1 Id,DepartmentName,NetCount,Remarks,CreatedOn,IsPublic,IsLock,SavedOn,LockVersion,Operator_Id From Base_Department ");
		strSql.Append(" Where Id=@Id ");
		SqlParameter[] parameters = {
				new SqlParameter("@Id", SqlDbType.BigInt,8)};
		parameters[0].Value = Id;
		DotNet.Model.Base_Department model=new DotNet.Model.Base_Department();
		SqlDataReader reader = DbHelperSQL.ExecuteReader(strSql.ToString(),parameters); 
		if(reader.Read())
		{
			model.Id = reader.GetInt64(reader.GetOrdinal("Id"));
			model.DepartmentName = reader.GetString(reader.GetOrdinal("DepartmentName"));
			model.NetCount = reader.GetInt32(reader.GetOrdinal("NetCount"));
			model.Remarks = reader.GetString(reader.GetOrdinal("Remarks"));
			model.CreatedOn = reader.GetDateTime(reader.GetOrdinal("CreatedOn"));
			model.IsPublic = reader.GetBoolean(reader.GetOrdinal("IsPublic"));
			model.IsLock = reader.GetBoolean(reader.GetOrdinal("IsLock"));
			model.SavedOn = reader.GetDateTime(reader.GetOrdinal("SavedOn"));
			model.LockVersion = reader.GetInt32(reader.GetOrdinal("LockVersion"));
			model.Operator_Id = reader.GetInt64(reader.GetOrdinal("Operator_Id"));
			reader.Close();
			return model;
		}
		else
		{
			reader.Close();
			return null;
		}
	}


	/// <summary>
	/// 获得数据列表List<>,DataReader 使用参数的
	/// </summary>
	/// <param name="strWhere">条件</param>
	/// <param name="ht">HashTable,保存参数名及参数对应的值</param>
	/// <returns>List<DotNet.Model.Base_Department></returns>
	/// 使用方法：string str = "id=@id";Hashtable ht = new Hashtable();ht.Add("@id", 10);
	public List<DotNet.Model.Base_Department> GetListUseDataReader(string strWhere, Hashtable ht=null)
	{
		StringBuilder strSql = new StringBuilder();
		strSql.Append("Select Id,DepartmentName,NetCount,Remarks,CreatedOn,IsPublic,IsLock,SavedOn,LockVersion,Operator_Id from Base_Department");
		if(strWhere.Trim().Length!=0)
		{
			strSql.Append(" Where " + strWhere.Trim());
		}
		//获取DataReader 
        SqlDataReader reader; 


		//组织参数
		if (ht != null && ht.Count > 0)
		{
			SqlParameter[] parameters = new SqlParameter[ht.Count];
			int i = 0;
			foreach (DictionaryEntry dc in ht)
			{
				parameters[i] = new SqlParameter() ;
				parameters[i].ParameterName = dc.Key.ToString();
				parameters[i].Value = dc.Value;
				i++;
			}
			 reader = DbHelperSQL.ExecuteReader(strSql.ToString(), parameters);
		}
		else
			reader = DbHelperSQL.ExecuteReader(strSql.ToString());
		if (reader.HasRows)
		{
			List<DotNet.Model.Base_Department> list = new List<DotNet.Model.Base_Department>();
			while (reader.Read())
			{
				DotNet.Model.Base_Department model = new DotNet.Model.Base_Department();
				model.Id = reader.GetInt64(reader.GetOrdinal("Id"));
				model.DepartmentName = reader.GetString(reader.GetOrdinal("DepartmentName"));
				model.NetCount = reader.GetInt32(reader.GetOrdinal("NetCount"));
				model.Remarks = reader.GetString(reader.GetOrdinal("Remarks"));
				model.CreatedOn = reader.GetDateTime(reader.GetOrdinal("CreatedOn"));
				model.IsPublic = reader.GetBoolean(reader.GetOrdinal("IsPublic"));
				model.IsLock = reader.GetBoolean(reader.GetOrdinal("IsLock"));
				model.SavedOn = reader.GetDateTime(reader.GetOrdinal("SavedOn"));
				model.LockVersion = reader.GetInt32(reader.GetOrdinal("LockVersion"));
				model.Operator_Id = reader.GetInt64(reader.GetOrdinal("Operator_Id"));
				list.Add(model);
			}
			reader.Close();
			return list;
		}
		else
		{
			reader.Close();
			return null;
		}
	}