参考文章：http://www.cnblogs.com/Abel_cn/archive/2008/12/09/1351425.html

http://blog.csdn.net/friendan/article/details/52182923

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

1. // ...
2. /// <summary>
3. /// 获取数据库连接对象
4. /// </summary>
5. /// <param name="dbName"></param>
6. /// <returns></returns>
7. public SqlConnection getSqlConnection(string dbName)
8. {
9. SqlConnection conn = new SqlConnection();
10. conn.ConnectionString = string.Format("server=127.0.0.1,9527;database={0};uid=sa;pwd=123456;Enlist=true", dbName);
11. conn.Open();
12. //showLog(string.Format("连接数据库成功：{0}", conn.Database));
13. return conn;
14. }
15. /// <summary>
16. /// 取所有数据库名称
17. /// </summary>
18. /// <returns></returns>
19. public ArrayList  getAllDbName()
20. {
21. ArrayList dbNameList = new ArrayList();
22. DataTable dbNameTable = new DataTable();
23. SqlConnection conn = getSqlConnection("master");
24. SqlDataAdapter adapter = new SqlDataAdapter("select name from master..sysdatabases",  conn);
25. lock (adapter)
26. {
27. adapter.Fill(dbNameTable);
28. }
29. foreach (DataRow row in dbNameTable.Rows)
30. {
31. dbNameList.Add(row["name"]);
32. }
33. conn.Close();
34. return dbNameList;
35. }