JCK.DAL/DAL_OnlineMessage.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SqlClient;
using System.Data;
using JCK.DBUtility;

namespace JCK.DAL
{
    /// <summary>
    /// 数据访问类:OnlineMessage
    /// </summary>
    public partial class DAL_OnlineMessage
    {
        public DAL_OnlineMessage()
        { }
        #region  BasicMethod
        /// <summary>
        /// 是否存在该记录
        /// </summary>
        public bool Exists(long Id)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select count(1) from OnlineMessage");
            strSql.Append(" where Id=@Id");
            SqlParameter[] parameters = {
					new SqlParameter("@Id", SqlDbType.BigInt)
			};
            parameters[0].Value = Id;

            return DbHelperSQL.Exists(strSql.ToString(), parameters);
        }


        /// <summary>
        /// 增加一条数据
        /// </summary>
        public long Add(JCK.Model.OnlineMessage model)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("insert into OnlineMessage(");
            strSql.Append("FromUserId,FromUserName,ToUserId,ToUserName,Content,SendTime,ReadTime,isdel,ToMobile)");
            strSql.Append(" values (");
            strSql.Append("@FromUserId,@FromUserName,@ToUserId,@ToUserName,@Content,@SendTime,@ReadTime,@isdel,@ToMobile)");
            strSql.Append(";select @@IDENTITY");
            SqlParameter[] parameters = {
					new SqlParameter("@FromUserId", SqlDbType.VarChar,50),
					new SqlParameter("@FromUserName", SqlDbType.VarChar,50),
					new SqlParameter("@ToUserId", SqlDbType.VarChar,50),
					new SqlParameter("@ToUserName", SqlDbType.VarChar,50),
					new SqlParameter("@Content", SqlDbType.VarChar,2000),
					new SqlParameter("@SendTime", SqlDbType.DateTime),
					new SqlParameter("@ReadTime", SqlDbType.DateTime),
					new SqlParameter("@isdel", SqlDbType.VarChar,1),
					new SqlParameter("@ToMobile", SqlDbType.VarChar,13)};
            parameters[0].Value = model.FromUserId;
            parameters[1].Value = model.FromUserName;
            parameters[2].Value = model.ToUserId;
            parameters[3].Value = model.ToUserName;