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c# SQLServer 數據庫連接類

c# SQLServer 數據庫連接

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Data.SqlClient;
using System.Text;
using System.Collections;
namespace BaseProject.Data
{

    public class DbAccess
    {
        private string _EditString = "if exists({0}) begin {1} end else begin {2} end";
        public string EditString
        {
            set { this._EditString = value; }
            get { return this._EditString; }
        }
        SqlConnection conn = null;
        SqlCommand cmd = null;
        public DbAccess()
        {
            //
            // TODO: 在此處添加構造函數邏輯
            //
            conn = new SqlConnection();
            conn.ConnectionString = Convert.ToString(ConfigurationManager.AppSettings["datasource"]); //Convert.ToString(System.Configuration.ConfigurationSettings.AppSettings["datasource"]);
            //conn.ConnectionString = "initial catalog=idyan_new;data source=.;user id=bt;password=btbtbtbt;Connect Timeout=5000";
            cmd = new SqlCommand();
            cmd.Connection = conn;
            cmd.CommandTimeout = 0;

        }
        public DbAccess(string constr)
        {

            //
            // TODO: 在此處添加構造函數邏輯
            //
            conn = new SqlConnection();
            //conn.ConnectionString = "initial catalog=pubs;data source=.;user id=sa;password=";
            //conn.ConnectionString = Convert.ToString(System.Configuration.ConfigurationSettings.AppSettings["datasource"]);
            conn.ConnectionString = constr;// "initial catalog=idyan_new;data source=.;user id=bt;password=btbtbtbt";
            cmd = new SqlCommand();
            cmd.Connection = conn;
            cmd.CommandTimeout = 0;

        }
        /// <summary>
        /// 獲取數據根據sql語句
        /// </summary>
        /// <param name="sql"></param>
        /// <returns></returns>
        public DataTable GetTable(string sql)
        {
            DataSet ds = new DataSet();

            try
            {
                cmd.CommandText = sql;
                cmd.CommandType = CommandType.Text;
                SqlDataAdapter da = new SqlDataAdapter();
                da.SelectCommand = cmd;

                da.Fill(ds);
            }
            catch (Exception ex)
            {

return null;

            }
            return ds.Tables[0] ?? new DataTable();
        }
        /// <summary>
        /// 獲取數據根據sql語句
        /// </summary>
        /// <param name="sql"></param>
        /// <returns></returns>
        public DataSet GetDataSet(string sql)
        {
            DataSet ds = new DataSet();

            try
            {
                cmd.CommandText = sql;
                cmd.CommandType = CommandType.Text;
                SqlDataAdapter da = new SqlDataAdapter();
                da.SelectCommand = cmd;

                da.Fill(ds);
            }
            catch (Exception ex)
            {

return null;

            }
            return ds;
        }
        /// <summary>
        /// 獲取數據根據sql語句
        /// </summary>
        /// <param name="sql"></param>
        /// <returns></returns>
        public DataSet GetDataSet(string sql, SqlParameter[] pas)
        {
            DataSet ds = new DataSet();

            try
            {
                cmd.Parameters.Clear();
                cmd.CommandText = sql;
                foreach (SqlParameter pa in pas)
                {
                    cmd.Parameters.Add(pa);
                }
                cmd.CommandType = CommandType.Text;
                SqlDataAdapter da = new SqlDataAdapter();
                da.SelectCommand = cmd;

                da.Fill(ds);
            }
            catch (Exception ex)
            {

return null;

            }
            return ds;
        }
        /// <summary>
        /// 獲取數據根據sql語句帶參數的
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="pas"></param>
        /// <returns></returns>
        public DataTable GetTable(string sql, params SqlParameter[] pas)
        {
            DataSet ds = new DataSet();
            try
            {
                cmd.CommandText = sql;
                cmd.CommandType = CommandType.Text;
                SqlDataAdapter da = new SqlDataAdapter();
                da.SelectCommand = cmd;
                cmd.Parameters.Clear();

                foreach (SqlParameter temppa in pas)
                {
                    cmd.Parameters.Add(temppa);
                }

                da.Fill(ds);
            }
            catch (Exception ex)
            {

                return null;
            }
            return ds.Tables[0] ?? new DataTable();
        }
        /// <summary>
        /// 獲取數據根據sql語句帶參數的
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="pas"></param>
        /// <returns></returns>
        public DataTable GetProcTable(string procname, params SqlParameter[] pas)
        {
            DataSet ds = new DataSet();
            try
            {
                cmd.CommandType = CommandType.StoredProcedure;
                cmd.CommandText = procname;
                //cmd.CommandText = sql;
                SqlDataAdapter da = new SqlDataAdapter();
                da.SelectCommand = cmd;
                cmd.Parameters.Clear();

                foreach (SqlParameter temppa in pas)
                {
                    cmd.Parameters.Add(temppa);
                }

                da.Fill(ds);
            }
            catch (Exception ex)
            {

                return null;
            }
            return ds.Tables[0] ?? new DataTable();
        }
        /// <summary>
        /// 獲取數據根據sql語句帶參數的
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="pas"></param>
        /// <returns></returns>
        public DataTable GetProcCursorTable(string procname, params SqlParameter[] pas)
        {
            DataSet ds = new DataSet();
            try
            {
                cmd.CommandType = CommandType.StoredProcedure;
                cmd.CommandText = procname;
                //cmd.CommandText = sql;
                SqlDataAdapter da = new SqlDataAdapter();
                da.SelectCommand = cmd;
                cmd.Parameters.Clear();

                foreach (SqlParameter temppa in pas)
                {
                    cmd.Parameters.Add(temppa);
                }

                da.Fill(ds);
            }
            catch (Exception ex)
            {

                return null;
            }
            return ds.Tables[1] ?? new DataTable();
        }
        /// <summary>
        /// 獲取數據根據sql語句帶參數的
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="pas"></param>
        /// <returns></returns>
        public int GetProcState(string procname, params SqlParameter[] pas)
        {
            int state = 0;
            try
            {
                OpenConn();
                cmd.CommandType = CommandType.StoredProcedure;
                cmd.CommandText = procname;
                cmd.Parameters.Clear();
                foreach (SqlParameter temppa in pas)
                {
                    cmd.Parameters.Add(temppa);
                }
                cmd.ExecuteNonQuery();
                CloseConn();
                state = Convert.ToInt32(pas[pas.Length - 1].Value);

            }
            catch
            {
                return 0;
            }
            return state;
        }
        /// <summary>
        /// 獲取數據根據sql語句帶參數的
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="pas"></param>
        /// <returns></returns>
        public int GetProcStateNo(string procname, params SqlParameter[] pas)
        {
            int state = 0;
            try
            {
                OpenConn();
                cmd.CommandType = CommandType.StoredProcedure;
                cmd.CommandText = procname;
                cmd.Parameters.Clear();
                foreach (SqlParameter temppa in pas)
                {
                    cmd.Parameters.Add(temppa);
                }
                cmd.ExecuteNonQuery();
                CloseConn();
                state = 1;

// state = Convert.ToInt32(pas[pas.Length - 1].Value);

            }
            catch
            {

                return 0;
            }
            return state;
        }
        /// <summary>
        /// 存儲過程返回值的
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="pas"></param>
        /// <returns></returns>
        public string GetProcStateReturnValue(string procname, params SqlParameter[] pas)
        {
            string state = "";
            try
            {
                OpenConn();
                cmd.CommandType = CommandType.StoredProcedure;
                cmd.CommandText = procname;
                cmd.Parameters.Clear();
                foreach (SqlParameter temppa in pas)
                {
                    cmd.Parameters.Add(temppa);
                }
                cmd.Parameters.AddWithValue("@Return_Value", "").Direction = ParameterDirection.ReturnValue;
                cmd.ExecuteNonQuery();
                state = Convert.ToString(cmd.Parameters["@Return_Value"].Value);
                state = state == null ? ("") : (state);
                CloseConn();

// state = Convert.ToInt32(pas[pas.Length - 1].Value);

            }
            catch
            {

                return "";
            }
            return state;
        }
        /// <summary>
        /// 根據sql語句返回跟新狀態
        /// </summary>
        /// <param name="sql"></param>
        /// <returns></returns>
        public bool GetState(string sql)
        {
            bool succ = false;
            try
            {
                cmd.CommandType = CommandType.Text;
                cmd.CommandText = sql;
                OpenConn();
                succ = cmd.ExecuteNonQuery() > 0 ? (true) : (false);
                CloseConn();
            }
            catch (Exception ex)
            {

                return false;
            }
            return succ;

        }
        /// <summary>
        /// 根據sql語句返回跟新狀態帶參數的
        /// </summary>
        /// <param name="sql">sql語句</param>
        /// <param name="pas">參數的集合</param>
        /// <returns></returns>
        public bool GetState(string sql, params SqlParameter[] pas)
        {
            bool succ = false;
            try
            {
                cmd.CommandType = CommandType.Text;
                cmd.CommandText = sql;
                cmd.Parameters.Clear();

                foreach (SqlParameter temppa in pas)
                {
                    cmd.Parameters.Add(temppa);
                }
                OpenConn();
                succ = cmd.ExecuteNonQuery() > 0 ? (true) : (false);
                CloseConn();
            }
            catch
            {

                // this.ShowError(ex.Message);
                //using (System.IO.StreamWriter sw = new System.IO.StreamWriter("D:\\error2008.txt"))
                //{
                //    sw.Write(ex.Message);
                //    sw.Flush();
                //}
                return false;
            }
            return succ;

        }
        /// <summary>
        /// 根據sql語句返回第一個單元格的數據
        /// </summary>
        /// <param name="sql"></param>
        /// <returns></returns>
        public string GetOne(string sql)
        {
            string res = "";
            try
            {
                cmd.CommandType = CommandType.Text;
                cmd.CommandText = sql;
                OpenConn();
                res = cmd.ExecuteScalar() == null ? ("") : (Convert.ToString(cmd.ExecuteScalar()));
                CloseConn();
            }
            catch (Exception ex)
            {

                return null;
            }
            return res;
        }
        /// <summary>
        /// 根據sql語句返回第一個單元格的數據帶參數的
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="pas"></param>
        /// <returns></returns>
        public string GetOne(string sql, params SqlParameter[] pas)
        {
            string res = "";
            try
            {
                cmd.CommandType = CommandType.Text;
                cmd.CommandText = sql;
                cmd.Parameters.Clear();

                foreach (SqlParameter temppa in pas)
                {
                    cmd.Parameters.Add(temppa);
                }
                OpenConn();
                res = cmd.ExecuteScalar() == null ? ("") : (Convert.ToString(cmd.ExecuteScalar()));
                CloseConn();
            }
            catch (Exception ex)
            {
                CloseConn();

                return null;
            }
            return res;
        }
        /// <summary>
        /// 返回數據的DataReader
        /// </summary>
        /// <param name="sql"></param>
        /// <returns></returns>
        public SqlDataReader GetDataReader(string sql)
        {
            SqlDataReader dr = null;
            try
            {
                cmd.CommandType = CommandType.Text;
                conn.Open();
                cmd.CommandText = sql;
                dr = cmd.ExecuteReader();
            }
            catch (Exception ex)
            {

                return null;
            }
            return dr;
        }
        /// <summary>
        /// 返回數據的DataReader帶參數的
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="pas"></param>
        /// <returns></returns>
        public SqlDataReader GetDataReader(string sql, params SqlParameter[] pas)
        {
            SqlDataReader dr = null;
            try
            {
                cmd.CommandType = CommandType.Text;
                conn.Open();
                cmd.Parameters.Clear();

                foreach (SqlParameter temppa in pas)
                {
                    cmd.Parameters.Add(temppa);
                }

                cmd.CommandText = sql;
                dr = cmd.ExecuteReader();
            }
            catch (Exception ex)
            {

                return null;
            }
            return dr;
        }
        /// <summary>
        /// 事務處理函數
        /// </summary>
        /// <param name="al"></param>
        /// <returns></returns>
        public bool GetTranState(ArrayList al)
        {
            cmd.CommandType = CommandType.Text;
            OpenConn();
            SqlTransaction tran = conn.BeginTransaction();
            cmd.Transaction = tran;
            try
            {
                for (int i = 0; i < al.Count; i++)
                {
                    cmd.CommandText = Convert.ToString(al[i]);
                    cmd.ExecuteNonQuery();
                }

                tran.Commit();
                CloseConn();
            }
            catch
            {

                tran.Rollback();
                CloseConn();
                return false;
            }
            return true;

        }
        /// <summary>
        /// 事務處理函數
        /// </summary>
        /// <param name="al"></param>
        /// <returns></returns>
        public bool GetTranStateParameter(ArrayList al)
        {
            cmd.CommandType = CommandType.Text;
            OpenConn();
            SqlTransaction tran = conn.BeginTransaction();
            cmd.Transaction = tran;
            try
            {
                for (int i = 0; i < al.Count; i++)
                {
                    SqlTranModel stm = (SqlTranModel)al[i];
                    cmd.CommandText = Convert.ToString(stm.Sql);
                    SqlParameter[] pas = stm.Pas;
                    cmd.Parameters.Clear();
                    foreach (SqlParameter temp in pas)
                    {
                        cmd.Parameters.Add(temp);
                    }
                    cmd.ExecuteNonQuery();
                }

                tran.Commit();
                CloseConn();
            }
            catch
            {

                tran.Rollback();
                CloseConn();
                return false;
            }
            return true;

        }
        /// <summary>
        /// 分頁函數
        /// </summary>
        /// <param name="pagesize"></param>
        /// <param name="columns"></param>
        /// <param name="tablename"></param>
        /// <param name="pid"></param>
        /// <param name="order"></param>
        /// <param name="current"></param>
        /// <returns></returns>
        public DataTable GetPageData(int current, int pagesize, string columns, string tablename, string pid, string where, string order)
        {
            current = current - 1 >= 0 ? (current - 1) : (0);
            string sql = string.Format("select top {0} {1} from {2} where 1=1 and {3} not in(select top {4}{3} from {2} where 1=1{5} order by {6}){5} order by {6}", pagesize, columns, tablename, pid, current * pagesize, where, order);
            return GetTable(sql);
        }
        /// <summary>
        /// 分頁存儲過程的調用
        /// </summary>
        /// <param name="current"></param>
        /// <param name="pagesize"></param>
        /// <param name="columns"></param>
        /// <param name="tablename"></param>
        /// <param name="pid"></param>
        /// <param name="where"></param>
        /// <param name="order"></param>
        /// <returns></returns>
        public DataTable GetProcPageData(int current, int pagesize, string columns, string tablename, string pid, string where, string order, string ordertype)
        {
            SqlParameter[] pas = { new SqlParameter("@PageIndex", current), new SqlParameter("@PageSize", pagesize), new SqlParameter("@Columns", columns), new SqlParameter("@Tablename", tablename), new SqlParameter("@Where", where), new SqlParameter("@Order", order), new SqlParameter("@OrderType", ordertype), new SqlParameter("@Pid", pid) };
            return GetProcTable("Pages", pas);
            //current = current - 1 >= 0 ? (current - 1) : (0);
            //string sql = string.Format("select top {0} {1} from {2} where 1=1 and {3} not in(select top {4}{3} from {2} where 1=1{5} order by {6}){5} order by {6}", pagesize, columns, tablename, pid, current * pagesize, where, order);
            //return GetTable(sql);
        }
        /// <summary>
        /// 分頁存儲過程的調用
        /// </summary>
        /// <param name="current"></param>
        /// <param name="pagesize"></param>
        /// <param name="columns"></param>
        /// <param name="tablename"></param>
        /// <param name="pid"></param>
        /// <param name="where"></param>
        /// <param name="order"></param>
        /// <returns></returns>
        public DataTable GetProcData(int current, int pagesize, string columns, string tablename, string pid, string where, string order, string resultCount, string distinct)
        {
            SqlParameter[] pas = { new SqlParameter("@TableNames", SqlDbType.NVarChar, 200), new SqlParameter("@PrimaryKey", SqlDbType.NVarChar, 100), new SqlParameter("@Order", SqlDbType.NVarChar, 200), new SqlParameter("@CurrentPage", SqlDbType.Int), new SqlParameter("@PageSize", SqlDbType.Int), new SqlParameter("@Fields", SqlDbType.NVarChar, 800), new SqlParameter("@Filter", SqlDbType.NVarChar, 1000), new SqlParameter("@ResultCount", SqlDbType.NVarChar, 12), new SqlParameter("@distinct", SqlDbType.NVarChar, 12) };
            pas[0].Value = tablename;
            pas[1].Value = pid;
            pas[2].Value = order;
            pas[3].Value = current;
            pas[4].Value = pagesize;
            pas[5].Value = columns;
            pas[6].Value = where;
            pas[7].Value = resultCount;
            pas[8].Value = distinct;
            return this.GetProcTable("Pages", pas);
            //SqlParameter[] parameters = {
            //                                new SqlParameter("@TableNames",SqlDbType.VarChar,8000),
            //                                new SqlParameter("@PrimaryKey", SqlDbType.VarChar,8000),
            //                                new SqlParameter("@Order", SqlDbType.VarChar,8000),
            //                                new SqlParameter("@CurrentPage",SqlDbType.Int),
            //                                new SqlParameter("@PageSize", SqlDbType.Int),
            //                                new SqlParameter("@Fields",SqlDbType.VarChar,8000),
            //                                new SqlParameter("@Filter", SqlDbType.VarChar,8000),
            //                                new SqlParameter("@Group", SqlDbType.VarChar,8000)
            //                            };
            //parameters[0].Value = tablename;
            //parameters[1].Value = pid;
            //parameters[2].Value = order;
            //parameters[3].Value = current;
            //parameters[4].Value = pagesize;
            //parameters[5].Value = columns;
            //parameters[6].Value = where;
            //parameters[7].Value = "";
            //DataSet ds = DbHelperSQL.RunProcedure("Pages", parameters, "data");

            //return ds.Tables["data"];//
            //return GetProcTable("Pages", pas);
            //current = current - 1 >= 0 ? (current - 1) : (0);
            //string sql = string.Format("select top {0} {1} from {2} where 1=1 and {3} not in(select top {4}{3} from {2} where 1=1{5} order by {6}){5} order by {6}", pagesize, columns, tablename, pid, current * pagesize, where, order);
            //return GetTable(sql);
        }
        /// <summary>
        /// 分頁存儲過程的調用
        /// </summary>
        /// <param name="current"></param>
        /// <param name="pagesize"></param>
        /// <param name="columns"></param>
        /// <param name="tablename"></param>
        /// <param name="pid"></param>
        /// <param name="where"></param>
        /// <param name="order"></param>
        /// <returns></returns>
        public DataTable GetProcAdminData(int current, int pagesize, string columns, string tablename, string pid, string where, string order, string resultCount, string distinct)
        {
            SqlParameter[] pas = { new SqlParameter("@TableNames", SqlDbType.NVarChar, 200), new SqlParameter("@PrimaryKey", SqlDbType.NVarChar, 100), new SqlParameter("@Order", SqlDbType.NVarChar, 200), new SqlParameter("@CurrentPage", SqlDbType.Int), new SqlParameter("@PageSize", SqlDbType.Int), new SqlParameter("@Fields", SqlDbType.NVarChar, 800), new SqlParameter("@Filter", SqlDbType.NVarChar, 200), new SqlParameter("@ResultCount", SqlDbType.NVarChar, 24), new SqlParameter("@Distinct", SqlDbType.NVarChar, 12) };
            pas[0].Value = tablename;
            pas[1].Value = pid;
            pas[2].Value = order;
            pas[3].Value = current;
            pas[4].Value = pagesize;
            pas[5].Value = columns;
            pas[6].Value = where;
            pas[7].Value = resultCount;
            pas[8].Value = distinct;
            return this.GetProcTable("Pages", pas);

        }
        /// <summary>
        /// 打開連接
        /// </summary>
        public void OpenConn()
        {
            if (conn.State != ConnectionState.Open)
            {
                try
                {
                    conn.Open();
                }
                catch (Exception ex)
                {

                    return;
                }
            }
        }
        /// <summary>
        /// 關閉連接
        /// </summary>
        public void CloseConn()
        {
            if (conn.State != ConnectionState.Closed)
            {
                try
                {
                    conn.Close();

                }
                catch (Exception ex)
                {

                    return;
                }
            }
        }
        public void DisposeConn()
        {
            try
            {
                if (conn.State != ConnectionState.Closed)
                {
                    try
                    {
                        conn.Close();

                    }
                    catch (Exception ex)
                    {

                        return;
                    }
                }
            }
            catch
            {

}
}

    }
    public class SqlTranModel
    {
        private string _sql;
        public string Sql
        {
            set { this._sql = value; }
            get { return this._sql; }
        }
        private SqlParameter[] _pas;
        public SqlParameter[] Pas
        {
            set { this._pas = value; }
            get { return this._pas; }
        }
    }
}

類謝謝大家的支持，幫我點下需要的廣告謝謝我會更加努力整理我的百科服務大家

posted on 2009-04-02 18:33 sanmao 閱讀(162) 評論(0) 編輯收藏

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123456
--123
16.?re: PowerDesigner使用教程|使用方法
學的很好啊，謝謝樓主
--四海驕陽
17.?re: Ext.grid.GridPanel |屬性|方法|配置|詳細介紹
asdf
--asdf
18.?re: oracle 12c 下載|oracle 12c 官網下載帶用戶名密碼|oracle 12c for windows64下載
登錄不了啊
--Stevies
19.?re: oracle 12c 下載|oracle 12c 官網下載帶用戶名密碼|oracle 12c for windows64下載
謝謝！
--Stevies
20.?re: oracle 12c 下載|oracle 12c 官網下載帶用戶名密碼|oracle 12c for windows64下載
謝謝，有Linux的就更好了
--oracle
21.?re: Oracle 11g 下載|Oracle 11g 官網下載|Oracle 11g 官網下載帶登錄用戶和密碼[未登錄]
現在怎么不能下載了
--1
22.?re: PowerDesigner使用教程|使用方法
學習了~
--RYJ
23.?re: PowerDesigner使用教程|使用方法[未登錄]
@haha
好的，不錯
--test
24.?re: oracle 12c 下載|oracle 12c 官網下載帶用戶名密碼|oracle 12c for windows64下載[未登錄]
謝謝博主，謝謝各位
--java
25.?re: PowerDesigner使用教程|使用方法
謝謝樓主的分享，非常感謝
--kz
26.?re: PowerDesigner使用教程|使用方法
學習了
--rommr
27.?re: jquery ui dialog|popup 彈出窗口層[未登錄]
11
--1
28.?re: 留言框代碼
人發發是否飛灑發放發送法爾范薩芬
--安安
29.?re: PowerDesigner使用教程|使用方法
請問下樓主我用腳本反向生成model 怎么講腳本里面的comment在model里面也有（我用的是DB29.1）。
--anuous
30.?re: ORACLE 10g下載|ORACLE 10g下載地址|ORACLE 10g官網下載地址
樓主真是個好人
--zero_cool
31.?re: 在分析向此請求提供服務所需資源時出錯。請檢查下列特定分析錯誤詳細信息并適當地修改源文件[未登錄]
評論內容較長,點擊標題查看
--周周
32.?re: 清華it證書查詢網
結業證書
--嚴定美
33.?re: 獲取域名的正則表達式
www.baidu.com/music
--yj
34.?re: PowerDesigner使用教程|使用方法[未登錄]
very good
--...
35.?re: ORACLE 10g下載|ORACLE 10g下載地址|ORACLE 10g官網下載地址
太感謝分享個賬戶來下載軟件了。謝謝
--ChurKen
36.?re: oracle 12c 下載|oracle 12c 官網下載帶用戶名密碼|oracle 12c for windows64下載
謝謝博主了，超級感謝
--#r
37.?re: oracle 12c 下載|oracle 12c 官網下載帶用戶名密碼|oracle 12c for windows64下載[未登錄]
謝謝博主，賬號分享超級給力，也謝謝樓上各位沒有改密碼，讓大家都能用、、、
--葉
38.?re: q寵寶貝卸載|怎么卸載
太煩人了
--莜何
39.?re: Oracle 11g 下載|Oracle 11g 官網下載|Oracle 11g 官網下載帶登錄用戶和密碼
THANKS!
--666
40.?re: web打印控件|打印預覽[未登錄]
11111111111111111111111111111111111111
--111

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