using System;
using System.Collections.Generic;
using System.Text;
using System.Data.SqlClient;
using System.Data;
using System.Collections;
using System.Configuration; 

namespace SQLHelper
{
    public static class SQLHelper222
    {
        public static SqlConnection Conn;
        public static  string strCon ="";

      


        private static SqlCommand BuildIntCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters)
        {
            SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
            command.Parameters.Add(new SqlParameter("ReturnValue", SqlDbType.Int, 4, ParameterDirection.ReturnValue, false, 0, 0, string.Empty, DataRowVersion.Default, null));
            return command;
        }




        private static SqlCommand BuildQueryCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters)
        {
            SqlCommand command = new SqlCommand(storedProcName, connection);
            command.CommandType = CommandType.StoredProcedure;
            if (parameters != null)
            {
                foreach (SqlParameter parameter in parameters)
                {
                    if (parameter != null)
                    {
                        if (((parameter.Direction == ParameterDirection.InputOutput) || (parameter.Direction == ParameterDirection.Input)) && (parameter.Value == null))
                        {
                            parameter.Value = DBNull.Value;
                        }
                        command.Parameters.Add(parameter);
                    }
                }
            }
            return command;
        }



        public static void close()
        {
            if ((Conn != null) && (Conn.State == ConnectionState.Open))
            {
                Conn.Close();
                Conn.Dispose();
            }
        }




        public static int ExecuteNonQuery(string connectionString, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
        {
            SqlCommand cmd = new SqlCommand();
            string strCon = System.Configuration.ConfigurationSettings.AppSettings.Get("ConnectionString");
            using (Conn = new SqlConnection(strCon))
            {
                PrepareCommand(cmd, Conn, null, cmdType, cmdText, commandParameters);
                int num = cmd.ExecuteNonQuery();
                cmd.Parameters.Clear();
                Conn.Close();
                Conn.Dispose();
                return num;
            }
        }




        public static SqlConnection getConn()
        { 
            string sServer = Pub_Class.ClsIni.ReadIni("Erp", "Server", Pub_Class.ClsPub.AppPath + @"\" + "HXErp.ini");
            string sDataBase = Pub_Class.ClsIni.ReadIni("Erp", "DataBase", Pub_Class.ClsPub.AppPath + @"\" + "HXErp.ini");
            string sUser = Pub_Class.ClsIni.ReadIni("Erp", "UserName", Pub_Class.ClsPub.AppPath + @"\" + "HXErp.ini");
            string sPassword = Pub_Class.ClsIni.ReadIni("Erp", "PassWord", Pub_Class.ClsPub.AppPath + @"\" + "HXErp.ini");
            string strCon = "Data Source=" + sServer + ";DataBase="+sDataBase+";User ID=" + sUser + ";PWD=" + sPassword + " ";
            return new SqlConnection(strCon);
        }




        private static void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, CommandType cmdType, string cmdText, SqlParameter[] cmdParms)
        {
            if (conn.State != ConnectionState.Open)
            {
                conn.Open();
            }
            cmd.Connection = conn;
            cmd.CommandText = cmdText;
            if (trans != null)
            {
                cmd.Transaction = trans;
            }
            cmd.CommandType = cmdType;
            if (cmdParms != null)
            {
                foreach (SqlParameter parameter in cmdParms)
                {
                    cmd.Parameters.Add(parameter);
                }
            }
        }

        public static DataSet Query(string SQLString, string tableName)
        {
            string strCon = System.Configuration.ConfigurationSettings.AppSettings.Get("ConnectionString");
            using (SqlConnection connection = new SqlConnection(strCon))
            {
                DataSet dataSet = new DataSet();
                try
                {
                    connection.Open();
                    new SqlDataAdapter(SQLString, connection).Fill(dataSet, tableName);
                    connection.Close();
                }
                catch (SqlException exception)
                {
                    throw new Exception(exception.Message);
                }
                finally
                {
                    connection.Close();
                }
                return dataSet;
            }
        }

        public static DataTable ExecuteDataTable(string sSQL)
        {
            DataTable dt = new DataTable();

            SqlDataAdapter sqldpt = new SqlDataAdapter();
            SqlConnection conn = getConn();
            SqlCommand cmd = new SqlCommand(sSQL, conn);
            try
            {
                //cmd.CommandText = sSQL;
                sqldpt.SelectCommand = cmd;
                conn.Open();
                sqldpt.Fill(dt);
                conn.Close();
                conn.Dispose();
            }
            catch
            {
                conn.Close();
                conn.Dispose();
                throw;
            }
            finally
            {
                conn.Close();
            }

            return dt;
        }
        public static int ExecuteNonQuery(SqlTransaction trans, CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
        {
            SqlCommand cmd = new SqlCommand();
            PrepareCommand(cmd, trans.Connection, trans, cmdType, cmdText, commandParameters);
            int val = cmd.ExecuteNonQuery();
            cmd.Parameters.Clear();
            return val;
        }
        public static SqlDataReader RunProcedure(string storedProcName, IDataParameter[] parameters)
        {
            SqlConnection connection = getConn();
            try
            {
                connection.Open();
                SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
                command.CommandType = CommandType.StoredProcedure;
                return command.ExecuteReader(CommandBehavior.CloseConnection);
            }
            catch (Exception e)
            {
                throw new Exception(e.Message);
                return null;

            }
        }




        public static int RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected)
        {
            string strCon = System.Configuration.ConfigurationSettings.AppSettings.Get("ConnectionString");
            using (SqlConnection connection = new SqlConnection(strCon))
            {
                connection.Open();
                SqlCommand command = BuildIntCommand(connection, storedProcName, parameters);
                rowsAffected = command.ExecuteNonQuery();
                int num = (int)command.Parameters["ReturnValue"].Value;
                connection.Close();
                return num;
            }
        }




        public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName)
        {
            string strCon = System.Configuration.ConfigurationSettings.AppSettings.Get("ConnectionString");
            using (SqlConnection connection = new SqlConnection(strCon))
            {
                DataSet dataSet = new DataSet();
                connection.Open();
                SqlDataAdapter adapter = new SqlDataAdapter();
                adapter.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
                adapter.Fill(dataSet, tableName);
                connection.Close();
                connection.Dispose();
                return dataSet;
            }
        }




        public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName, int Times)
        {
            string strCon = System.Configuration.ConfigurationSettings.AppSettings.Get("ConnectionString");
            using (SqlConnection connection = new SqlConnection(strCon))
            {
                DataSet dataSet = new DataSet();
                connection.Open();
                SqlDataAdapter adapter = new SqlDataAdapter();
                adapter.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
                adapter.SelectCommand.CommandTimeout = Times;
                adapter.Fill(dataSet, tableName);
                connection.Close();
                connection.Dispose();
                return dataSet;
            }
        }



        public static int ExecuteSql(string SQLString)
        {
            int num2;
            string strCon = System.Configuration.ConfigurationSettings.AppSettings.Get("ConnectionString");
            using (SqlConnection connection = new SqlConnection(strCon))
            {
                SqlCommand command = new SqlCommand(SQLString, connection);
                try
                {
                    connection.Open();
                    num2 = command.ExecuteNonQuery();
                    connection.Close();
                    return num2;
                }
                catch (SqlException exception)
                {
                    connection.Close();
                    throw new Exception(exception.Message);
                }
                finally
                {
                    connection.Close();
                    if (command != null)
                    {
                        command.Dispose();
                    }
                }
            }
            return num2;
        }

        public static SqlTransaction GetSqlTransaction()
        {
            string strCon = System.Configuration.ConfigurationSettings.AppSettings.Get("ConnectionString");
            using (SqlConnection connection = new SqlConnection(strCon))
            {
                connection.Open();
                //SqlCommand command = new SqlCommand();
                //command.Connection = connection;
                SqlTransaction transaction = connection.BeginTransaction();
                return transaction;
            }
        }

        /// <summary>
        /// ÊÂÎï
        /// </summary>
        /// <param name="SQLStringList"></param>
        public static bool ExecuteSqlTran(ArrayList SQLStringList)
        {
            string strCon = System.Configuration.ConfigurationSettings.AppSettings.Get("ConnectionString");
            using (SqlConnection connection = new SqlConnection(strCon))
            {
                connection.Open();
                SqlCommand command = new SqlCommand();
                command.Connection = connection;
                SqlTransaction transaction = connection.BeginTransaction();
                command.Transaction = transaction;
                try
                {
                    for (int i = 0; i < SQLStringList.Count; i++)
                    {
                        string str = SQLStringList[i].ToString();
                        if (str.Trim().Length > 1)
                        {
                            command.CommandText = str;
                            command.ExecuteNonQuery();
                        }
                    }
                    transaction.Commit();
                    return true;
                }
                catch (SqlException exception)
                {                    
                    transaction.Rollback();
                    return false;
                    throw new Exception(exception.Message);
                    
                }
            }
        }


        public static object GetSingle(string SQLString)
        {
            object obj3;
            string strCon = System.Configuration.ConfigurationSettings.AppSettings.Get("ConnectionString");
            using (SqlConnection connection = new SqlConnection(strCon))
            {
                SqlCommand command = new SqlCommand(SQLString, connection);
                try
                {
                    connection.Open();
                    object objA = command.ExecuteScalar();
                    if (object.Equals(objA, null) || object.Equals(objA, DBNull.Value))
                    {
                        return null;
                    }
                    return objA;
                }
                catch (SqlException exception)
                {
                    connection.Close();
                    throw new Exception(exception.Message);
                }
                finally
                {
                    if (command != null)
                    {
                        command.Dispose();
                    }
                }
            }
            return obj3;
        }





    }
}