<p>本文主要介绍C#连接示例。</p> <p>&nbsp; &nbsp;&nbsp;<img src="https://pcp-portal-sca.obs-cn-shenzhen.pinganyun.com/pcp-portal-sca/20202805103006-1147fb21938d.png" style="height:26px; margin:0px; width:65px" />：官方资料可参考<a href="https://docs.mongodb.com/drivers/csharp" target="_blank">MongoDB C# Driver</a>。</p> <p><span style="font-size:18px"><strong>操作步骤</strong></span></p> <p>1.&nbsp;&nbsp;获取 DDS 实例的连接信息。</p> <p>2.&nbsp; 执行以下命令，安装驱动包。</p> <table border="0" cellpadding="0" cellspacing="0"> <tbody> <tr> <td style="background-color:#f7f8fa"> <p><span style="font-family:Consolas">mongocsharpdriver.dll</span></p> </td> </tr> </tbody> </table> <p>3.&nbsp; &nbsp;C#安装代码：</p> <table border="0" cellpadding="0" cellspacing="0"> <tbody> <tr> <td style="background-color:#f7f8fa"> <p><span style="font-family:Consolas">using MongoDB.Driver;</span></p> <p><span style="font-family:Consolas">using System;</span></p> <p><span style="font-family:Consolas">using System.Collections.Generic;</span></p> <p>&nbsp;</p> <p><span style="font-family:Consolas">namespace Aliyun</span></p> <p><span style="font-family:Consolas">{</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp; <strong>class</strong> Program</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp; {</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; static void Main(string[] args)</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //Mongo 实例信息</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; const <strong>string</strong> host1 = &quot;demotest.mongodb.db.cloud.papub&quot;;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; const <strong>int</strong> port1 = 15923;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;const <strong>string</strong> replicaSetName = &quot;demotest&quot;;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; const <strong>string</strong> admin = &quot;test&quot;;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; const <strong>string</strong> userName = &quot;demouser&quot;;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; const <strong>string</strong> passwd = &quot;123456&quot;;</span></p> <p>&nbsp;</p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <strong>try</strong></span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Console.WriteLine(&quot;开始连接.......&quot;);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MongoClientSettings settings = <strong>new</strong> MongoClientSettings();</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; List&lt;MongoServerAddress&gt; servers = <strong>new</strong> List&lt;MongoServerAddress&gt;();</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; servers.Add(new MongoServerAddress(host1, port1));</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; settings.Servers = servers;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //设置副本集名称</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; settings.ReplicaSetName = replicaSetName;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //设置超时时间为3秒</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; settings.ConnectTimeout = <strong>new</strong> TimeSpan(0, 0, 0, 3, 0);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MongoCredential credentials = MongoCredential.CreateCredential(admin, userName, passwd);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; settings.Credential = credentials;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MongoClient client = <strong>new</strong> MongoClient(settings);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; var server = client.GetServer();</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MongoDatabase database = server.GetDatabase(&quot;test&quot;);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; var collection = database.GetCollection&lt;User&gt;(&quot;test_collection&quot;);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; User user = <strong>new</strong> User();</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; user.id = &quot;1&quot;;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; user.name = &quot;mongo_test&quot;;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; user.sex = &quot;女&quot;;</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //插入数据user</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; collection.Insert(user);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //获取一条数据</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; User result = collection.FindOne();</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Console.WriteLine(&quot;id:&quot; + result.id + &quot; name:&quot; + result.name + &quot; sex:&quot;+result.sex);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Console.WriteLine(&quot;连接成功.........&quot;);</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; catch (Exception e)</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Console.WriteLine(&quot;连接异常:&quot;+e.Message);</span></p> <p>&nbsp;</p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp; }</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp; <strong>class</strong> User</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp; {</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; public <strong>string</strong> id { set; get; }</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; public <strong>string</strong> name { set; get; }</span></p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; public <strong>string</strong> sex { set; get; }</span></p> <p>&nbsp;</p> <p><span style="font-family:Consolas">&nbsp;&nbsp;&nbsp; }</span></p> <p><span style="font-family:Consolas">}</span></p> </td> </tr> </tbody> </table>