isysmsg.cs

某个公司需要维持良好的客户关系

using System;
using CRM.Model;
using System.Data;


namespace CRM.IDAL
{
	/// <summary>
	/// ISysMsg 的摘要说明。
	/// </summary>
	public interface ISysMsg
	{
		/// <summary>
		/// 返回指定信息
		/// </summary>
		/// <param name="msgId">信息ID</param>
		/// <returns></returns>
		SysMsgInfo GetSysMsgById(string msgId);

		/// <summary>
		/// 返回指定发送用户的信息
		/// </summary>
		/// <param name="userId">发送用户ID</param>
		/// <returns></returns>
		DataTable GetSysMsgBySendUserId(string userId);

		/// <summary>
		/// 返回指定接收用户的信息
		/// </summary>
		/// <param name="userId">接收用户ID</param>
		/// <returns></returns>
		DataTable GetSysMsgByReceiveUserId(string userId);

		/// <summary>
		/// 返回所有信息
		/// </summary>
		/// <returns></returns>
		DataTable GetAllSysMsg();

		/// <summary>
		/// 添加一条新的信息
		/// </summary>
		/// <param name="msg">信息</param>
		void Insert(SysMsgInfo msg);

		/// <summary>
		/// 修改指定信息
		/// </summary>
		/// <param name="msg">信息</param>
		void Update(SysMsgInfo msg);

		/// <summary>
		/// 删除指定信息
		/// </summary>
		/// <param name="msgId">信息ID</param>
		void Delete(string msgId);
	}
}