C#异常处理表、类、SQL

/****** Object:  Table [dbo].[IError]    Script Date: 09/05/2012 17:00:41 ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

SET ANSI_PADDING OFF
GO

CREATE TABLE [dbo].[IError](
	[ErrorModuleID] [varchar](500) NOT NULL,
	[ErrorClassName] [varchar](50) NULL,
	[ErrorMethodName] [varchar](50) NULL,
	[ErrorMessage] [varchar](1000) NOT NULL,
	[ErrorSource] [varchar](1000) NULL,
	[ErrorStackTrace] [varchar](1000) NULL,
	[ErrorTargetSite] [varchar](1000) NULL,
	[ErrorSQL] [varchar](8000) NULL,
	[subCode] [varchar](20) NULL,
	[subName] [varchar](20) NULL,
	[subMachine] [varchar](20) NULL,
	[subTime] [datetime] NULL
) ON [PRIMARY]

GO

SET ANSI_PADDING OFF
GO

/*
功                 能 ：保存异常信息到IError
涉       及        表 ：IError
*/
ALTER PROCEDURE [dbo].[pt_ErrorSaveError]
@ErrorModuleID varchar(500),
@ErrorClassName varchar(50),
@ErrorMethodName varchar(50),
@ErrorMessage varchar(1000),
@ErrorSource varchar(1000),
@ErrorStackTrace varchar(1000),
@ErrorTargetsite varchar(1000),
@subCode  varchar(50),
@subName  varchar(50),
@subMachine  varchar(50),
@ErrorSQL varchar(4000)
AS
declare @subTime datetime
set @subTime = getdate()
insert into IError (ErrorModuleID,ErrorClassName,ErrorMethodName,ErrorMessage,ErrorSource,ErrorStackTrace,ErrorTargetsite,ErrorSQL,subCode,subName,subMachine,subTime)
values (@ErrorModuleID,@ErrorClassName,@ErrorMethodName,@ErrorMessage,@ErrorSource,@ErrorStackTrace,@ErrorTargetsite,@ErrorSQL,@subCode,@subName,@subMachine,@subTime)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Text;
using System.Data.SqlClient;
using System.Data;
using System.IO;

namespace Common
{
    public partial class SaveError
    {
        private string strConnection = "Data Source=127.0.0.1;Initial Catalog=SysAdmin;Persist Security Info=True;User ID=sa;Password=123";		//连接字符串					
        private SqlConnection conn;										//数据库连接 
        private SqlCommand comm;										//SqlCommand


        //打开连接
        public bool OpenConn()
        {
            bool bResult = false;

            if (this.conn == null)
            {
                StringBuilder strBd = new StringBuilder();
                strBd.Append("时间： " + System.DateTime.Now.ToString() + System.Environment.NewLine);
                strBd.Append("Message: 数据库连接失败，SqlConnection为空" + System.Environment.NewLine);
                this.SaveErrorMessageToFile(strBd.ToString());
                bResult = false;
            }
            else
            {
                if (this.conn.State != System.Data.ConnectionState.Open)
                {
                    if (this.conn.ConnectionString.Length == 0)
                    {
                        this.conn.ConnectionString = this.strConnection;
                    }
                    try
                    {
                        this.conn.Open();
                        bResult = true;
                    }
                    catch (Exception)
                    {
                        bResult = false;
                    }
                }
                else
                {
                    bResult = true;
                }
            }

            return bResult;
        }

        //释放关闭连接
        public void DisposeConn()
        {
            if (this.conn != null && this.conn.State == System.Data.ConnectionState.Open)
            {
                this.conn.Close();
                this.conn = null;
            }
        }

        /// <summary>
        /// 获取登陆用户信息，保存到错误日志中
        /// </summary>
        /// <param name="UserCode"></param>
        /// <param name="UserName"></param>
        /// <returns></returns>
        public bool GetUserInfo(out string UserCode, out string UserName)
        {
            UserCode = "01211231";
            UserName = "测试";
            return true;
        }

        #region 保存异常专业存储过程,使用专用方法，防止第归错误，此方法中如果出现错误记录文本文件

        public bool SaveErrorMessageToDB(System.Exception e, string ErrorSQL)
        {
            bool bRelult = false;
            using (this.conn = new SqlConnection(this.strConnection))
            {
                string UserCode;
                string UserName;
                this.GetUserInfo(out UserCode, out UserName);

                System.Diagnostics.StackTrace st = new System.Diagnostics.StackTrace(true);
               // int deep = st.FrameCount;
                string CallClassName = st.GetFrame(2).GetMethod().ReflectedType.FullName;
                string CallMethodName = st.GetFrame(3).GetMethod().Name;

                string ProcedureName = "SP_SaveError";
                this.comm = new SqlCommand(ProcedureName, this.conn);
                this.comm.CommandType = CommandType.StoredProcedure;
                this.comm.Parameters.Add("@ErrorModuleID", "IDAL");
                this.comm.Parameters.Add("@ErrorClassName", CallClassName);
                this.comm.Parameters.Add("@ErrorMethodName", CallMethodName);
                this.comm.Parameters.Add("@ErrorMessage", e.Message);
                this.comm.Parameters.Add("@ErrorSource", e.Source);
                this.comm.Parameters.Add("@ErrorStackTrace", "");//e.StackTrace
                this.comm.Parameters.Add("@ErrorSQL", ErrorSQL);
                this.comm.Parameters.Add("@ErrorTargetsite", e.TargetSite.ReflectedType.FullName);
                this.comm.Parameters.Add("@subCode", UserCode);
                this.comm.Parameters.Add("@subName", UserName);
                this.comm.Parameters.Add("@subMachine", System.Environment.MachineName);

                try
                {
                    if (OpenConn() == false)										//打开连接
                    {
                        return false;
                    }
                    this.comm.ExecuteNonQuery();
                    this.conn.Close();
                    bRelult = true;
                }
                catch (SqlException ex)
                {
                    StringBuilder strBd = new StringBuilder();
                    strBd.Append("时间： " + System.DateTime.Now.ToString() + System.Environment.NewLine);
                    strBd.Append("UserCode： " + UserCode + System.Environment.NewLine);
                    strBd.Append("UserName： " + UserName + System.Environment.NewLine);
                    strBd.Append("Message: " + ex.Message + System.Environment.NewLine);
                    strBd.Append("ConnectionString: " + this.conn.ConnectionString + System.Environment.NewLine);
                    strBd.Append("Source: " + ex.Source + "ErrorSQL:" + ErrorSQL + System.Environment.NewLine);
                    strBd.Append("Server: " + ex.Server + System.Environment.NewLine);
                    strBd.Append("Procedure: " + ex.Procedure + System.Environment.NewLine);
                    strBd.Append("Number: " + ex.Number + System.Environment.NewLine);
                    strBd.Append("StackTrace: " + ex.StackTrace + System.Environment.NewLine + System.Environment.NewLine);
                    strBd.Append("TargetSite: " + ex.TargetSite + System.Environment.NewLine + System.Environment.NewLine);
                    this.SaveErrorMessageToFile(strBd.ToString());
                }
                catch (SystemException ex)
                {
                    StringBuilder strBd = new StringBuilder();
                    strBd.Append("时间： " + System.DateTime.Now.ToString() + System.Environment.NewLine);
                    strBd.Append("UserCode： " + UserCode + System.Environment.NewLine);
                    strBd.Append("UserName： " + UserName + System.Environment.NewLine);
                    strBd.Append("Message: " + ex.Message + System.Environment.NewLine);
                    strBd.Append("ConnectionString: " + this.conn.ConnectionString + System.Environment.NewLine);
                    strBd.Append("Source: " + ex.Source + "ErrorSQL:" + ErrorSQL + System.Environment.NewLine);
                    strBd.Append("StackTrace: " + ex.StackTrace + System.Environment.NewLine + System.Environment.NewLine);
                    strBd.Append("TargetSite: " + ex.TargetSite + System.Environment.NewLine + System.Environment.NewLine);
                    this.SaveErrorMessageToFile(strBd.ToString());
                }
                catch (Exception ex)
                {
                    StringBuilder strBd = new StringBuilder();
                    strBd.Append("时间： " + System.DateTime.Now.ToString() + System.Environment.NewLine);
                    strBd.Append("UserCode： " + UserCode + System.Environment.NewLine);
                    strBd.Append("UserName： " + UserName + System.Environment.NewLine);
                    strBd.Append("Message: " + ex.Message + System.Environment.NewLine);
                    strBd.Append("ConnectionString: " + this.conn.ConnectionString + System.Environment.NewLine);
                    strBd.Append("Source: " + ex.Source + "ErrorSQL:" + ErrorSQL + System.Environment.NewLine);
                    strBd.Append("StackTrace: " + ex.StackTrace + System.Environment.NewLine);
                    strBd.Append("TargetSite: " + ex.TargetSite + System.Environment.NewLine + System.Environment.NewLine);
                    this.SaveErrorMessageToFile(strBd.ToString());
                }
                finally
                {
                    this.DisposeConn();									//释放连接
                    this.comm.Dispose();
                }
            }
            return bRelult;
        }

        /// <summary>
        /// 如果保存异常时出现了错误，写入错误日志文件
        /// </summary>
        /// <param name="ErrorMessage"></param>
        /// <returns></returns>
        public bool SaveErrorMessageToFile(string ErrorMessage)
        {
            bool bResult = false;

            string path = "";//System.Environment.SystemDirectory;
            string ServerMapPath = System.Windows.Forms.Application.StartupPath;

            if (ServerMapPath != null && ServerMapPath != string.Empty)
            {
                path = ServerMapPath + @"\ErrorDBLog";
            }
            if (Directory.Exists(path) == false)
            {
                Directory.CreateDirectory(path);
            }

            string filePath = path + @"\DBError.log";
            StreamWriter sw = null;
            try
            {
                sw = new StreamWriter(filePath, true);
                sw.WriteLine(ErrorMessage);
                bResult = true;
            }
            catch (Exception ex)
            {
                string Message = ex.Message;
            }
            finally
            {
                if (sw != null)
                {
                    sw.Close();
                }
            }
            return bResult;
        }
        #endregion


    }
}

            try
            {
                DataSet ds = new DataSet();
                string strConn="Data Source=127.0.0.1;Initial Catalog=SysAdmin;Persist Security Info=True;User ID=sa;Password=123";
                string strSQL = "selecl SysID,[SysName] from SubSystem where SysState=‘OK‘ order by sysid asc";
                SqlConnection connection = new SqlConnection(strConn);
                comm = new SqlCommand(strSQL, connection);
                connection.Open();
                object o = comm.ExecuteScalar();
            }
            catch (Exception e)
            {
                string ErrorSQL = "SQL语句：" + this.comm.CommandText;
                err.SaveErrorMessageToDB(e, ErrorSQL);			//保存错误信息	
            }