sqlholderlib.cs

本系统主要针对物流供应链中的库存管理环节

using System;
using System.Data;
using System.Data.SqlClient;
using sql=System.Data.SqlClient;
using System.Configuration;
namespace SQLHolderLib
{
	/// <summary>
	/// Class1 的摘要说明。
	/// </summary>
	public class SQLHolder
	{
		private sql.SqlConnection con;
//		private readonly string RETURNVALUE="RETURNVALUE";
		string strCon=null;
		private readonly string RETURNVALUE = "RETURNVALUE";
		public SQLHolder()
		{
			strCon=System.Configuration.ConfigurationSettings.AppSettings["SQLCONNECTION"].ToString();
//			strCon=@"server=LICH1983\LICH1983;user id=sa;pwd=leaving;database=mmcedumisjw";
			con=new SqlConnection(strCon);

		}
		public bool Test()
		{
			try
			{
				con.Open();
				con.Close();
				return true;
				
			}
			catch(Exception ex)
			{
				if(con.State==ConnectionState.Open)
					con.Close();
				SystemError.Systemlog(ex.Message);
				return false;
				
			}
		}
		public string TestString()
		{
			try
			{
				con.Open();
				con.Close();
				return "连接成功！";
				
			}
			catch(Exception ex)
			{
				if(con.State==ConnectionState.Open)
					con.Close();
				SystemError.Systemlog(ex.Message);
				return "连接失败！";
				
			}
		}
		public void Open()
		{
			if(con!=null)
			{
				if(con.State==ConnectionState.Closed)
				{
					try
					{
						con.Open();
					}
					catch(Exception ex)
					{
						SystemError.Systemlog(ex.Message);
					}
				}
			}
		}
		public void Close()
		{
			if(con!=null)
			{
				if(con.State==ConnectionState.Open)
				{
					con.Close();
				}
			}
		}
		public void Dispose()
		{
			if(con!=null)
			{
				con.Dispose();
				con=null;
			}
		}
		public string getConnectionString()
		{
			return strCon;
		}
		public DataSet GetDataByProc(string stroeProcName,string tableName)
		{
			DataSet ds=null;
			sql.SqlDataAdapter da=new SqlDataAdapter(stroeProcName,con);
			da.SelectCommand.CommandType=CommandType.StoredProcedure;
			try
			{
				ds=new DataSet();
				Open();
				da.Fill(ds,tableName);
				da.Dispose();
				Close();
			}
			catch(Exception ex)
			{
				SystemError.Systemlog(ex.Message);
				Close();
				da.Dispose();
				ds=null;
			}
			return ds;
		}
		public DataSet GetDataByProc(string storeProcName,string tableName,sql.SqlParameter[] parms)
		{
			DataSet ds=null;
			SqlCommand com=CreatCommand(storeProcName,parms);
			sql.SqlDataAdapter da=new SqlDataAdapter(com);
			try
			{
				ds=new DataSet();
				Open();
				da.Fill(ds,tableName);
				da.Dispose();
				if(con.State==ConnectionState.Open)
					con.Close();
			}
			catch(Exception ex)
			{
				SystemError.Systemlog(ex.Message);
				if(con.State==ConnectionState.Open)
					con.Close();
				da.Dispose();
				ds=null;
			}
			return ds;
		}
		public SqlDataReader GetDataByProc(string storeProcName)
		{
			sql.SqlDataReader dr=null;
			sql.SqlCommand com=new SqlCommand(storeProcName,con);
			com.CommandType=CommandType.StoredProcedure;
			try
			{
				Open();
				dr=com.ExecuteReader(CommandBehavior.CloseConnection);
			}
			catch(Exception ex) 
			{
				SystemError.Systemlog(ex.Message);
				this.Close();
			}
			return dr;
		}
		
		public SqlDataReader GetDataByProc(string storeProcName,sql.SqlParameter[] parms)
		{
			sql.SqlDataReader dr=null;

			SqlCommand cmd = CreateCommand(storeProcName, parms);
			
			try
			{
				Open();
				dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
			}
			catch(Exception ex)
			{
				SystemError.Systemlog(ex.Message);
				this.Close();
			}
			return dr;
		}
		private SqlCommand CreatCommand(string storeProcName,sql.SqlParameter[] parms)
		{
//			Open();
			SqlCommand com=new SqlCommand(storeProcName,con);
			com.CommandType=CommandType.StoredProcedure;
			if(parms!=null)
			{
				foreach(sql.SqlParameter parm in parms)
				{
					com.Parameters.Add(parm);
				}
			}
			com.Parameters.Add(new sql.SqlParameter(RETURNVALUE,SqlDbType.Int,4,ParameterDirection.ReturnValue,
				false,0,0,string.Empty,DataRowVersion.Default,null));
			return com;
		}
		/// <summary>
		/// 执行存储过程
		/// </summary>
		/// <param name="procName">存储过程的名称</param>
		/// <returns>返回存储过程返回值</returns>
		public int RunProc(string procName) 
		{
			int j=0;
			SqlCommand cmd = CreateCommand(procName, null);
			try
			{
				Open();
				j=cmd.ExecuteNonQuery();
			}
			catch(Exception ex)
			{
				///记录错误日志
				SystemError.Systemlog(ex.Message);
			}
			///关闭数据库的连接
			Close();
			
			///返回存储过程的参数值
//			return (int)cmd.Parameters[RETURNVALUE].Value;
			return j;
		}

		/// <summary>
		/// 执行存储过程
		/// </summary>
		/// <param name="procName">存储过程名称</param>
		/// <param name="prams">存储过程所需参数</param>
		/// <returns>返回存储过程返回值</returns>
		public int RunProc(string procName, SqlParameter[] prams) 
		{
			int j=0;
			SqlCommand cmd = CreateCommand(procName, prams);
			try
			{
				Open();
				j=cmd.ExecuteNonQuery();
			}
			catch(Exception ex)
			{
				///记录错误日志
				SystemError.Systemlog(ex.Message);
				
			}
			///关闭数据库的连接
			Close();
			
			///返回存储过程的参数值
//			return (int)cmd.Parameters[RETURNVALUE].Value;
			return j;
		}

		/// <summary>
		/// 执行存储过程
		/// </summary>
		/// <param name="procName">存储过程的名称</param>
		/// <param name="dataReader">返回存储过程返回值</param>
		public void RunProc(string procName, out SqlDataReader dataReader) 
		{
			///创建Command
			SqlCommand cmd = CreateCommand(procName, null);
			
			Open();
			dataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);				
		}

		/// <summary>
		/// 执行存储过程
		/// </summary>
		/// <param name="procName">存储过程的名称</param>
		/// <param name="prams">存储过程所需参数</param>
		/// <param name="dataReader">存储过程所需参数</param>
		public void RunProc(string procName, SqlParameter[] prams, out SqlDataReader dataReader) 
		{
			///创建Command
			SqlCommand cmd = CreateCommand(procName, prams);
			
			Open();
			dataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
		}
		
		/// <summary>
		/// 创建一个SqlCommand对象以此来执行存储过程
		/// </summary>
		/// <param name="procName">存储过程的名称</param>
		/// <param name="prams">存储过程所需参数</param>
		/// <returns>返回SqlCommand对象</returns>
		private SqlCommand CreateCommand(string procName, SqlParameter[] prams) 
		{
			///打开数据库连接
//			Open();
			
			///设置Command
			SqlCommand cmd = new SqlCommand(procName, con);
			cmd.CommandType = CommandType.StoredProcedure;

			///添加把存储过程的参数
			if (prams != null) 
			{
				foreach (SqlParameter parameter in prams)
				{
					cmd.Parameters.Add(parameter);
				}
			}
			
			///添加返回参数ReturnValue
//			cmd.Parameters.Add(
//				new SqlParameter(RETURNVALUE, SqlDbType.Int,4,ParameterDirection.ReturnValue,
//				false,0,0,string.Empty, DataRowVersion.Default,null));

			///返回创建的SqlCommand对象
			return cmd;
		}
		
		/// <summary>
		/// 生成存储过程参数
		/// </summary>
		/// <param name="ParamName">存储过程名称</param>
		/// <param name="DbType">参数类型</param>
		/// <param name="Size">参数大小</param>
		/// <param name="Direction">参数方向</param>
		/// <param name="Value">参数值</param>
		/// <returns>新的 parameter 对象</returns>
		public SqlParameter CreateParam(string ParamName, SqlDbType DbType, Int32 Size, ParameterDirection Direction, object Value) 
		{
			SqlParameter param;

			///当参数大小为0时，不使用该参数大小值
			if(Size > 0)
			{
				param = new SqlParameter(ParamName, DbType, Size);
			}
			else
			{
				///当参数大小为0时，不使用该参数大小值
				param = new SqlParameter(ParamName, DbType);
			}

			///创建输出类型的参数
			param.Direction = Direction;
			if (!(Direction == ParameterDirection.Output && Value == null))
			{
				param.Value = Value;
			}

			///返回创建的参数
			return param;
		}

		/// <summary>
		/// 传入输入参数
		/// </summary>
		/// <param name="ParamName">存储过程名称</param>
		/// <param name="DbType">参数类型</param></param>
		/// <param name="Size">参数大小</param>
		/// <param name="Value">参数值</param>
		/// <returns>新的parameter 对象</returns>
		public SqlParameter CreateInParam(string ParamName, SqlDbType DbType, int Size, object Value) 
		{
			///创建输入类型的参数
			return CreateParam(ParamName, DbType, Size, ParameterDirection.Input, Value);
		}		

		/// <summary>
		/// 传入返回值参数
		/// </summary>
		/// <param name="ParamName">存储过程名称</param>
		/// <param name="DbType">参数类型</param>
		/// <param name="Size">参数大小</param>
		/// <returns>新的 parameter 对象</returns>
		public SqlParameter CreateOutParam(string ParamName, SqlDbType DbType, int Size) 
		{
			///创建输出类型的参数
			return CreateParam(ParamName, DbType, Size, ParameterDirection.Output, null);
		}		

		/// <summary>
		/// 传入返回值参数
		/// </summary>
		/// <param name="ParamName">存储过程名称</param>
		/// <param name="DbType">参数类型</param>
		/// <param name="Size">参数大小</param>
		/// <returns>新的 parameter 对象</returns>
		public SqlParameter CreateReturnParam(string ParamName, SqlDbType DbType, int Size) 
		{
			///创建返回类型的参数
			return CreateParam(ParamName, DbType, Size, ParameterDirection.ReturnValue, null);
		}
		
	}
}