Backup/Discuz.Data/DataProvider/PrivateMessages.cs

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using System;
using System.Text;
using System.Data;

using Discuz.Entity;
using Discuz.Common;
using Discuz.Common.Generic;

namespace Discuz.Data
{
    public class PrivateMessages
    {
        /// <summary>
        /// 获得指定ID的短消息的内容
        /// </summary>
        /// <param name="pmid">短消息pmid</param>
        /// <returns>短消息内容</returns>
        public static PrivateMessageInfo GetPrivateMessageInfo(int pmid)
        {
            PrivateMessageInfo privatemessageinfo = null;
            IDataReader reader = DatabaseProvider.GetInstance().GetPrivateMessageInfo(pmid);

            if (reader.Read())
                privatemessageinfo = LoadSinglePrivateMessage(reader);

            reader.Close();
            return privatemessageinfo;
        }

        /// <summary>
        /// 得到当用户的短消息数量
        /// </summary>
        /// <param name="userId">用户ID</param>
        /// <param name="folder">所属文件夹(0:收件箱,1:发件箱,2:草稿箱)</param>
        /// <param name="state">短消息状态(0:已读短消息、1:未读短消息、2:最近消息（7天内）、-1:全部短消息)</param>
        /// <returns>短消息数量</returns>
        public static int GetPrivateMessageCount(int userId, int folder, int state)
        {
            return DatabaseProvider.GetInstance().GetPrivateMessageCount(userId, folder, state);
        }

        /// <summary>
        /// 得到公共消息数量
        /// </summary>
        /// <returns>公共消息数量</returns>
        public static int GetAnnouncePrivateMessageCount()
        {
            return DatabaseProvider.GetInstance().GetAnnouncePrivateMessageCount();
        }

    
        /// <summary>
        /// 创建短消息
        /// </summary>
        /// <param name="privatemessageinfo">短消息内容</param>
        /// <param name="savetosentbox">设置短消息是否在发件箱保留(0为不保留, 1为保留)</param>
        /// <returns>短消息在数据库中的pmid</returns>
        public static int CreatePrivateMessage(PrivateMessageInfo privatemessageinfo, int savetosentbox)
        {
            int pmid = DatabaseProvider.GetInstance().CreatePrivateMessage(privatemessageinfo, savetosentbox);