CloudComputingFinalProject/App.code/DAL/link.cs

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

namespace Basic.DAL
{
    /// <summary>
    /// ��������
    /// </summary>
    public partial class link
    {
        /// <summary>
        /// ����һ������
        /// </summary>
        public int Add(Basic.Model.link model)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("insert into tb_link(");
            strSql.Append("paixu,title,class_id,path,url,target,state,remark,add_time)");
            strSql.Append(" values (");
            strSql.Append("@paixu,@title,@class_id,@path,@url,@target,@state,@remark,@add_time)");
            strSql.Append(";select @@IDENTITY");

            SqlParameter[] parameters = { 
                new SqlParameter("@paixu", SqlDbType.Int,10),
                new SqlParameter("@title", SqlDbType.NVarChar,255),
                new SqlParameter("@class_id", SqlDbType.Int,10),
                new SqlParameter("@path", SqlDbType.NVarChar,255),
                new SqlParameter("@url", SqlDbType.NVarChar,255),
                new SqlParameter("@target", SqlDbType.Int,10),
                new SqlParameter("@state", SqlDbType.Int,10),
                new SqlParameter("@remark", SqlDbType.NVarChar,500),
                new SqlParameter("@add_time", SqlDbType.DateTime,23)};
            parameters[0].Value = model.paixu;
            parameters[1].Value = model.title;
            parameters[2].Value = model.class_id;
            parameters[3].Value = model.path;
            parameters[4].Value = model.url;
            parameters[5].Value = model.target;
            parameters[6].Value = model.state;
            parameters[7].Value = model.remark;
            parameters[8].Value = model.add_time;

            object obj = DbHelperSQL.GetSingle(strSql.ToString(), parameters);
            if (obj == null)
            {
                return 0;
            }
            else
            {
                return Convert.ToInt32(obj);
            }
        }

        /// <summary>
        /// ����һ������
        /// </summary>
        public bool Update(Basic.Model.link model)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("update tb_link set ");
            strSql.Append("paixu=@paixu,");
            strSql.Append("title=@title,");
            strSql.Append("class_id=@class_id,");
            strSql.Append("path=@path,");
            strSql.Append("url=@url,");
            strSql.Append("target=@target,");
            strSql.Append("state=@state,");
            strSql.Append("remark=@remark,");
            strSql.Append("add_time=@add_time");
            strSql.Append(" where id=@id");
            SqlParameter[] parameters = { 
                new SqlParameter("@paixu", SqlDbType.Int,10),
                new SqlParameter("@title", SqlDbType.NVarChar,255),
                new SqlParameter("@class_id", SqlDbType.Int,10),
                new SqlParameter("@path", SqlDbType.NVarChar,255),
                new SqlParameter("@url", SqlDbType.NVarChar,255),
                new SqlParameter("@target", SqlDbType.Int,10),
                new SqlParameter("@state", SqlDbType.Int,10),
                new SqlParameter("@remark", SqlDbType.NVarChar,500),
                new SqlParameter("@add_time", SqlDbType.DateTime,23),
                new SqlParameter("@id", SqlDbType.Int,4)};
            parameters[0].Value = model.paixu;
            parameters[1].Value = model.title;
            parameters[2].Value = model.class_id;
            parameters[3].Value = model.path;
            parameters[4].Value = model.url;
            parameters[5].Value = model.target;
            parameters[6].Value = model.state;
            parameters[7].Value = model.remark;
            parameters[8].Value = model.add_time;
            parameters[9].Value = model.id;
            int rows = DbHelperSQL.ExecuteSql(strSql.ToString(), parameters);
            if (rows > 0)
            {
                return true;
            }
            else
            {
                return false;
            }
        }

        /// <summary>
        /// ɾ��һ������
        /// </summary>
        public bool Delete(int id)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("delete from  tb_link");
            strSql.Append(" where id=@id");
            SqlParameter[] parameters = { 
                new SqlParameter("@id", SqlDbType.Int,4)};
            parameters[0].Value = id;
            int rows = DbHelperSQL.ExecuteSql(strSql.ToString(), parameters);
            if (rows > 0)
            {
                return true;
            }
            else
            {
                return false;
            }
        }

        /// <summary>
        /// �õ�һ������ʵ��
        /// </summary>
        public Basic.Model.link GetModel(int id)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select top 1 id,paixu,title,class_id,path,url,target,state,remark,add_time from tb_link");
            strSql.Append(" where id=@id");
            SqlParameter[] parameters = { 
                new SqlParameter("@id", SqlDbType.Int,4)};
            parameters[0].Value = id;
            Basic.Model.link model = new Basic.Model.link();
            DataSet ds = DbHelperSQL.Query(strSql.ToString(), parameters);
            if (ds.Tables[0].Rows.Count > 0)
            {
                if (!string.IsNullOrEmpty(ds.Tables[0].Rows[0]["id"].ToString()))
                {
                    model.id = int.Parse(ds.Tables[0].Rows[0]["id"].ToString());
                }
                if (!string.IsNullOrEmpty(ds.Tables[0].Rows[0]["paixu"].ToString()))
                {
                    model.paixu = int.Parse(ds.Tables[0].Rows[0]["paixu"].ToString());
                }
                if (!string.IsNullOrEmpty(ds.Tables[0].Rows[0]["title"].ToString()))
                {
                    model.title = ds.Tables[0].Rows[0]["title"].ToString();
                }
                if (!string.IsNullOrEmpty(ds.Tables[0].Rows[0]["class_id"].ToString()))
                {
                    model.class_id = int.Parse(ds.Tables[0].Rows[0]["class_id"].ToString());
                }
                if (!string.IsNullOrEmpty(ds.Tables[0].Rows[0]["path"].ToString()))
                {
                    model.path = ds.Tables[0].Rows[0]["path"].ToString();
                }
                if (!string.IsNullOrEmpty(ds.Tables[0].Rows[0]["url"].ToString()))
                {
                    model.url = ds.Tables[0].Rows[0]["url"].ToString();
                }
                if (!string.IsNullOrEmpty(ds.Tables[0].Rows[0]["target"].ToString()))
                {
                    model.target = int.Parse(ds.Tables[0].Rows[0]["target"].ToString());
                }
                if (!string.IsNullOrEmpty(ds.Tables[0].Rows[0]["state"].ToString()))
                {
                    model.state = int.Parse(ds.Tables[0].Rows[0]["state"].ToString());
                }
                if (!string.IsNullOrEmpty(ds.Tables[0].Rows[0]["remark"].ToString()))
                {
                    model.remark = ds.Tables[0].Rows[0]["remark"].ToString();
                }
                if (!string.IsNullOrEmpty(ds.Tables[0].Rows[0]["add_time"].ToString()))
                {
                    model.add_time = DateTime.Parse(ds.Tables[0].Rows[0]["add_time"].ToString());
                }
                return model;
            }
            else
            {
                return null;
            }
        }
        /// <summary>
        /// �޸�һ������
        /// </summary>
        public void UpdateField(int id, string strValue)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("update tb_link set " + strValue);
            strSql.Append(" where id=" + id);
            DbHelperSQL.ExecuteSql(strSql.ToString());
        }
    }
}