c#获得目标服务器中所有数据库名、表名、列名的实现代码

　　　　　　/// <summary>
        /// 获得目标服务器所有数据库名
        /// </summary>
        /// <param name="servername"></param>
        /// <param name="username"></param>
        /// <param name="password"></param>
        public void getdatabasenamelist(string servername, string username, string password)
        {
            sqldmo.application sqlapplication = new sqldmo.applicationclass();
            sqldmo.sqlserver sqlserver = new sqldmo.sqlserverclass();

            sqlserver.connect(servername, username, password);          // 连接服务器

            foreach (sqldmo.database databbase in sqlserver.databases)
            {
                if (databbase.name != null)
                {
                    this.databasetreeview.nodes.add(databbase.name);

                    getdatabasetablelist(servername, username, password, databbase.name);
                }
            }
        }

        /// <summary>
        /// 加载数据库中表
        /// </summary>
        /// <param name="servername">服务器名</param>
        /// <param name="username">用户名</param>
        /// <param name="password">密码</param>
        /// <param name="databasename">数据库名</param>
        private void getdatabasetablelist(string servername, string username, string password, string databasename)
        {
            sqldmo.sqlserver server = new sqldmo.sqlserverclass();

            //连接到服务器
            server.connect(servername, username, password);

            //对所有的数据库遍历，获得指定数据库
            for (int i = 0; i < server.databases.count; i++)
            {
                //判断当前数据库是否是指定数据库
                if (server.databases.item(i + 1, "dbo").name == databasename)
                {
                    //获得指定数据库
                    sqldmo._database db = server.databases.item(i + 1, "dbo");

                    //获得指定数据库中的所有表
                    for (int j = 0; j < db.tables.count; j++)
                    {
                        this.databasetreeview.nodes[i].nodes.add(db.tables.item(j + 1, "dbo").name);
                    }
                }
            }
        }

    /// <summary>
        /// 获得表中所有列名
        /// </summary>
        /// <param name="servername">服务器名</param>
        /// <param name="username">用户名</param>
        /// <param name="password">密码</param>
        /// <param name="tablename">表名</param>
        /// <param name="databasename">数据库名</param>
        /// <returns></returns>
        public string getrowlistfromtable(string servername, string username, string password, string tablename, string databasename)
        {
            string result = string.empty;

            string connectionstring = string.empty;
            connectionstring += "server=" + servername;
            connectionstring += ";pwd=" + password;
            connectionstring += ";uid=" + username;
            connectionstring += ";database=" + databasename;

            string commandstring = string.empty;
            commandstring += "select   name   from   syscolumns   where   id=object_id('";
            commandstring += tablename;
            commandstring += "')";
           

            sqlconnection sqlconnection = new sqlconnection(connectionstring);
            sqlcommand sqlcommand = new sqlcommand(commandstring, sqlconnection);

            sqldataadapter dataadapter = new sqldataadapter(commandstring, sqlconnection);

            dataset dataset = new dataset();
            dataadapter.fill(dataset);

            datatable datatable = dataset.tables[0];

            // datatable datatable = sqlconnection.getschema("tables");
            foreach (datarow row in datatable.rows)
            {
                result += row[0].tostring() + "-";
            }

            if (result != null)
            {
                return result; 
            }
            else
            {
                return "0";
            }
        }