using System;//引用系统命名空间
using System.Data.OleDb;//引用ADO.net命名空间
using System.Data;//引用数据空间
using System.Runtime.InteropServices;//为了调用GUID
using System.EnterpriseServices;//引用COM+名命空间
using System.Runtime.CompilerServices;//运行时编译服务器
using System.Reflection;//用些全局属性取得强名属性
using System.Data.SqlClient;
[assembly: ApplicationName("COMLibrary")]
//强名文件名和文件属性。用sn.exe生成,用法 sn -k clsStock.snk
//[assembly: AssemblyKeyFileAttribute("clsStock.snk")]
//[assembly: AssemblyKeyName("clsStock.snk")]
[assembly: AssemblyKeyFileAttribute("..\\..\\clsStock.snk")]
[assembly: AssemblyKeyName("..\\..\\clsStock.snk")]
namespace COMLibrary
{
[Transaction(TransactionOption.Required)]
public class DBOperation:ServicedComponent
{
private SqlConnection myConnection;
private SqlCommand myCommand;
///

/// connect database
///

///
database config infomation
/// formatting : datasource=..;user id=..;password=...
///

///
public void Connect()
{
string connection="workstation id=YANLIXIN;packet size=4096;user id=sa;data source=\"yanlixin\\scgl\";p" +
"ersist security info=True;initial catalog=scgl;password=scgl";
//
myConnection = new SqlConnection( connection );
myConnection.Open();
myCommand = new SqlCommand();
myCommand.Connection = myConnection;

return;
}
///

/// Execute one insert statement and insert one record into the table
///

///
database config infomation
/// formatting : datasource=..;user id=..;password=...
///

///
public int CommandExcute(string commandstring)
{
int returnValue = 0;
myCommand.CommandText = commandstring;
returnValue = myCommand.ExecuteNonQuery();

return returnValue;
}
///

/// Commit the com+ transaction
///

public void Commit()
{
ContextUtil.SetComplete();
if(myConnection!=null)
myConnection.Close();
}
///

/// Roolback the com+ transaction
///

public void Abort() { ContextUtil.SetAbort(); if(myConnection!=null) myConnection.Close(); } }}

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