一直使用的一个调用SQL Server存储过程的方法

using System;
using System.IO;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Collections;
using System.Web;

namespace DA
{
    /**//// <summary>
    ///内部类:存储过程的返回值记录类
    /// </summary>
    public class SqlResult
    {        
        public bool Succeed;            //存储过程是否执行成功.
        public Hashtable OutputValues;    // 存储过程output值,放在(HashTable)表OutputValues里.            
        public DataTable datatable;        //存储过程返回的结果集,放在(DataTable)表datatable里.
        public string errorMessage;        //访问数据库失败

        public SqlResult()
        {
            Succeed = false;
            OutputValues = new Hashtable();
            datatable=new DataTable();
            errorMessage = "";
        }
    }

    /**//// <summary>
    /// =========***调用存储过程基类***=======
    /// </summary>
    public abstract class SP_Base : IDisposable
    {
        public SP_Base() : this("","")
        {
        }
        //重载
        public SP_Base(string sp_name, string sql_name)
        {
            this.ProcedureName = sp_name;
            this.SQLName = sql_name;
        }
        //私有成员变量
        private string sp_name; //存储过程名
        private string sql_name;
        private SqlConnection myConnection;//连接字符串
        private SqlCommand myCommand;//SqlCommand用于执行存储过程
        private SqlParameter myParameter;//存储过程参数
        
        //公共属性
        public string ProcedureName//获取和设置存储过程名
        {
            get
            { 
                return this.sp_name; 
            }
            set
            { 
                this.sp_name = value; 
            }
        }
        //公共属性
        public string SQLName//获取和设置存储过程名
        {
            get
            { 
                return this.sql_name; 
            }
            set
            { 
                this.sql_name = value; 
            }
        }
        

        /**//// <summary>
        /// 调用存储过程
        /// </summary>
        /// <param name="parameters">参数集合</param>
        /// <returns></returns>
        public  SqlResult Call_SP(params object[] parameters)
        {
            string strconn=ConfigurationSettings.AppSettings["ConnectionString"];
            //存储过程的返回值记录类
            SqlResult result = new SqlResult();
            myConnection  = new SqlConnection(strconn);
            myCommand = new SqlCommand(this.ProcedureName, myConnection);
            myCommand.CommandType = CommandType.StoredProcedure;
            
            SqlDataAdapter myAdapter = new SqlDataAdapter(myCommand);            
            try
            {
                myConnection.Open();
                //将参数添加到存储过程的参数集合
                GetProcedureParameter(result,parameters);
                //填充数据,将结果填充到SqlResult集中
                myAdapter.Fill(result.datatable);
                //将输出参数的值添加到Result的OutputValues
                GetOutputValue(result);
            }
            catch(Exception e)
            {
                result.errorMessage = e.Message;
            }

            finally
            {
                myAdapter.Dispose();
                myCommand.Dispose();
                myConnection.Close();
                myConnection.Dispose();
            }
            return result;
        }

        /**//// <summary>
        /// 将参数添加到存储过程的参数集合
        /// </summary>
        /// <param name="parameters"></param>
        private void GetProcedureParameter(SqlResult result,params object[] parameters)
        {
            SqlCommand myCommand2 = new SqlCommand();
            myCommand2.Connection = this.myConnection;
            myCommand2.CommandText = "select * from INFORMATION_SCHEMA.PARAMETERS where SPECIFIC_NAME='" +this.ProcedureName+ "' order by ORDINAL_POSITION";
            SqlDataReader reader = null;
            try 
            {
                reader = myCommand2.ExecuteReader();
                int i = 0;
                while(reader.Read())
                {
                    myParameter = new SqlParameter();
                    myParameter.ParameterName = reader["PARAMETER_NAME"].ToString();
                    myParameter.Direction = reader["PARAMETER_MODE"].ToString()=="IN"?ParameterDirection.Input:ParameterDirection.Output;
                    
                    switch(reader["DATA_TYPE"].ToString())
                    {
                        case "bit" :
                            if(myParameter.Direction == ParameterDirection.Input)
                                myParameter.Value = Convert.ToBoolean(parameters[i]);
                            myParameter.SqlDbType = SqlDbType.Bit;
                            break;
                        
                        case "bigint":
                            if(myParameter.Direction == ParameterDirection.Input)
                                myParameter.Value = Convert.ToInt32(parameters[i]);
                            myParameter.SqlDbType = SqlDbType.BigInt;
                            break;
                       
                        case "int" :
                            if(myParameter.Direction == ParameterDirection.Input)
                                myParameter.Value = Convert.ToInt32(parameters[i].ToString());
                            myParameter.SqlDbType = SqlDbType.Int;
                            break;

                        case "decimal" :
                            if(myParameter.Direction == ParameterDirection.Input)
                                myParameter.Value = (double)parameters[i];
                            myParameter.SqlDbType = SqlDbType.Decimal;
                            myParameter.Precision = (byte)reader["NUMERIC_PRECISION"];
                            myParameter.Scale = (byte)reader["NUMERIC_SCALE"];
                            break;

                        case "nvarchar" :
                            if(myParameter.Direction == ParameterDirection.Input)
                                myParameter.Value = Convert.ToString(parameters[i]);
                            myParameter.Size = Convert.ToInt32(reader["CHARACTER_MAXIMUM_LENGTH"]);
                            myParameter.SqlDbType = SqlDbType.NVarChar;
                            break;

                        case "varchar" :
                            if(myParameter.Direction == ParameterDirection.Input)
                                myParameter.Value = (string)parameters[i];
                            myParameter.Size = Convert.ToInt32(reader["CHARACTER_MAXIMUM_LENGTH"]);
                            myParameter.SqlDbType = SqlDbType.VarChar;
                            break;

                        case "nchar" :
                            if(myParameter.Direction == ParameterDirection.Input)
                                myParameter.Value = (string)parameters[i];
                            myParameter.Size = Convert.ToInt32(reader["CHARACTER_MAXIMUM_LENGTH"]);
                            myParameter.SqlDbType = SqlDbType.NChar;
                            break;

                        case "char" :
                            if(myParameter.Direction == ParameterDirection.Input)
                                myParameter.Value = (string)parameters[i];
                            myParameter.Size = Convert.ToInt32(reader["CHARACTER_MAXIMUM_LENGTH"]);
                            myParameter.SqlDbType = SqlDbType.Char;
                            break;

                        case "ntext" :
                            if(myParameter.Direction == ParameterDirection.Input)
                                myParameter.Value = (string)parameters[i];
                            myParameter.SqlDbType = SqlDbType.NText;
                            break;
                      
                        case "text" :
                            if(myParameter.Direction == ParameterDirection.Input)
                                myParameter.Value = (string)parameters[i];
                            myParameter.SqlDbType = SqlDbType.Text;
                            break;
                       
                        case "datetime" :
                            if(myParameter.Direction == ParameterDirection.Input)
                                myParameter.Value = Convert.ToDateTime(parameters[i]);
                            myParameter.SqlDbType = SqlDbType.DateTime;
                            break; 
                 
                        case "smalldatetime" :
                            if(myParameter.Direction == ParameterDirection.Input)
                                myParameter.Value = Convert.ToDateTime(parameters[i]);
                            myParameter.SqlDbType = SqlDbType.DateTime;
                            break;      
                 
                        case "image" :
                            if(myParameter.Direction == ParameterDirection.Input)
                            {
                                myParameter.Value=(byte[])parameters[i];                            
                            }
                            myParameter.SqlDbType = SqlDbType.Image;
                            break;

                        case "real":
                            if(myParameter.Direction==ParameterDirection.Input)
                                myParameter.Value=Convert.ToSingle(parameters[i]);
                            myParameter.SqlDbType = SqlDbType.Real;
                            break;    
                        case "varbinary":
                            if(myParameter.Direction==ParameterDirection.Input)
                                myParameter.Value=(byte[])parameters[i];
                            myParameter.SqlDbType = SqlDbType.VarBinary;
                            break;

                        default : 
                            break;
                    }
                    i++;
                    myCommand.Parameters.Add(myParameter);
                }
            }
            catch(Exception e)
            {
                result.errorMessage = e.Message;
            }
            finally
            {
                if(reader!=null)
                {
                    reader.Close();
                }
                myCommand2.Dispose();
            }
        }

        /**//// <summary>
        /// 将输出的值添加到Result的OutputValues
        /// </summary>
        /// <param name="result"></param>
        private void GetOutputValue(SqlResult result)
        {
            if(result.Succeed==false)
            {
                result.Succeed=true;
            }
            foreach(SqlParameter parameter in myCommand.Parameters)
            {
                if(parameter.Direction == ParameterDirection.Output)
                {
                    //Hashtab表是一个键值对
                    result.OutputValues.Add(parameter.ParameterName, parameter.Value);
                }
            }
        }

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(true);
        }

        protected virtual void Dispose(bool disposing)
        {
            if (! disposing)
                return; 
            if(myConnection != null)
            {
                myConnection.Dispose();
            }
        }
        //=======end===============
    }
}

调用方法：
public class bbs_Opera : SP_Base
    {
        public bbs_Opera()
        {

        }

        //添加新的主题
        public bool AddPostInfo(int forumID,int UserID,int postPic,string postTitle,string postText,string postIp)
        {
            base.ProcedureName = "bbs_AddPostInfo";
            SqlResult result = base.Call_SP(UserID,forumID,postPic,postTitle,postText,postIp);
            if(!result.Succeed)
            {
                if(result.errorMessage!="数据源为空")
                {
                    this.errInfo = result.errorMessage;
                    return false;
                }
            }
            return true;
        }
    }
}