How to obtain the 2000 instance list and the Database List running on an instance)

In. in the. NET Framework, the COM component can be conveniently called. Sometimes we need to obtain the list of service instances running on a SQL Server and the list of databases on an instance, through Microsoft. sqldmo. the object component can easily complete this task:
First, how to find Microsoft. sqldmo. Object
1. How can I use sqldmo components in your project?
Menu-project-add reference-COM-Microsoft.SQLDMO.Object

2. Write this function as a class:

1 using system;
2 using system. collections;
3 using system. Collections. Specialized;
4
5 namespace jillzhang
6 {
7/*** // <summary>
8 // summary description for sqlinfo.
9 /// </Summary>
10 public class sqlinfo
11 {
12 member variables # Region member variables
13 private string _ uid = "";
14 private string _ Pwd = "";
15 private stringcollection _ serverlist = new stringcollection ();
16 private hashtable _ databaselist = new hashtable ();
17 # endregion
18
19. constructor # region Constructor
20 public sqlinfo ()
21 {
22 This. _ serverlist = getsqlinstances ();
23 if (this. _ serverlist. Count> 0)
24 {
25 foreach (string item in this. _ serverlist)
26 {
27 This. _ databaselist. Add (item, this. getalldatabases (item ));
28}
29}
30}
31 public sqlinfo (string uid, string PWD)
32 {
33 this. _ uid = uid;
34 this. _ Pwd = PWD;
35 This. _ serverlist = getsqlinstances ();
36 IF (this. _ serverlist. Count> 0)
37 {
38 foreach (string item in this. _ serverlist)
39 {
40 this. _ databaselist. Add (item, this. getalldatabases (item ));
41}
42}
43}
44 # endregion
45
46 Public attributes # Region Public attributes
47/*** // <summary>
48 // service list
49 // </Summary>
50 public stringcollection serverlist
51 {
52 get
53 {
54 return _ serverlist;
55}
56}
57/** // <summary>
58 // username used to log on to SQL Server
59 /// </Summary>
60 public string uid
61 {
62 get
63 {
64 return _ uid;
65}
66 set
67 {
68 _ uid = value;
69}
70}
71/*** // <summary>
72 // used for Logon Password
73 /// </Summary>
74 public string pwd
75 {
76 get
77 {
78 return _ PWD;
79}
80 set
81 {
82 _ Pwd = value;
83}
84}
85 # endregion
86
87 event method # region event Method
88/** // <summary>
89 // obtain the service list
90 /// </Summary>
91 /// <returns> </returns>
92 public static system. Collections. Specialized. stringcollection getsqlinstances ()
93 {
94 // declare a string linked list to store list information
95 system. Collections. Specialized. stringcollection instaces = new system. Collections. Specialized. stringcollection ();
96 try
97 {
98 // below Code Obtain the service list by calling the sqldmo component.
99 sqldmo. Application sqlapplication = new sqldmo. applicationclass ();
100 sqldmo. namelist sqlserverintances = sqlapplication. listavailablesqlservers ();
101 For (INT I = 0; I <sqlserverintances. Count; I ++)
102 {
103 object SVR = sqlserverintances. Item (I + 1); // The index starts from 1.
104 If (SVR! = NULL)
105 {
106 instaces. Add (SVR. tostring ());
107}
108}
109 return instaces;
110}
111 catch
112 {
113 throw new exception ("failed to get the server list information. Please check whether your SQL server is running! ");
114}
115}
116
117/*** // <summary>
118 // obtain the Database List on a server instance of sqlserver 2000
119 /// </Summary>
120 /// <Param name = "server"> service name </param>
121 /// <Param name = "uid"> logon user </param>
122 /// <Param name = "PWD"> logon password </param>
123 /// <returns> database list </returns>
124 public static system. Collections. Specialized. stringcollection getalldatabases (string server, string uid, string PWD)
125 {
126 system. Collections. Specialized. stringcollection databases = new system. Collections. Specialized. stringcollection ();
127 try
128 {
129 sqldmo. sqlserver = new sqldmo. sqlserverclass ();
130 sqlserver. Connect (server, uid, PWD );
131 foreach (sqldmo. Database dB in sqlserver. databases)
132 {
133 If (db. Name! = NULL)
134 {
135 databases. Add (db. Name );
136}
137}
138 return databases;
139}
140 catch
141 {
142 throw new exception ("failed to get service" + SERVER + ", the Database List is displayed. You may not have to start the server or your username or password is incorrect ");
143}
144}
145 public system. Collections. Specialized. stringcollection getalldatabases (string server)
146 {
147 return getalldatabases (server, this. _ uid, this. _ PWD );
148}
149 # endregion
150
151}