DTcms.Web/plugins/feedback/dal.cs

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using System;
using System.Data;
using System.Text;
using System.Data.SqlClient;
using DTcms.DBUtility;
using DTcms.Common;

namespace DTcms.Web.Plugin.Feedback.DAL
{
	/// <summary>
	/// 数据访问类:在线留言
	/// </summary>
	public partial class feedback
	{
        private string databaseprefix; //数据库表名前缀
        public feedback(string _databaseprefix)
		{
            databaseprefix = _databaseprefix;
        }

		#region  Method
		/// <summary>
		/// 是否存在该记录
		/// </summary>
		public bool Exists(int id)
		{
			StringBuilder strSql=new StringBuilder();
            strSql.Append("select count(1) from " + databaseprefix + "feedback");
			strSql.Append(" where id=@id");
			SqlParameter[] parameters = {
					new SqlParameter("@id", SqlDbType.Int,4)};
			parameters[0].Value = id;

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

		/// <summary>
		/// 增加一条数据
		/// </summary>
		public int Add(Model.feedback model)
		{
			StringBuilder strSql=new StringBuilder();
            strSql.Append("insert into " + databaseprefix + "feedback(");
            strSql.Append("site_path,title,content,user_name,user_tel,user_qq,user_email,add_time,is_lock)");
			strSql.Append(" values (");
            strSql.Append("@site_path,@title,@content,@user_name,@user_tel,@user_qq,@user_email,@add_time,@is_lock)");
			strSql.Append(";select @@IDENTITY");
			SqlParameter[] parameters = {
                    new SqlParameter("@site_path", SqlDbType.NVarChar,100),
					new SqlParameter("@title", SqlDbType.NVarChar,100),
					new SqlParameter("@content", SqlDbType.NText),
					new SqlParameter("@user_name", SqlDbType.NVarChar,50),
					new SqlParameter("@user_tel", SqlDbType.NVarChar,30),
					new SqlParameter("@user_qq", SqlDbType.NVarChar,30),
					new SqlParameter("@user_email", SqlDbType.NVarChar,100),
					new SqlParameter("@add_time", SqlDbType.DateTime),
                    new SqlParameter("@is_lock", SqlDbType.TinyInt,1)};
            parameters[0].Value = model.site_path;
            parameters[1].Value = model.title;
			parameters[2].Value = model.content;