c# - 如何使用 C# 更新 mongodb 集合

Question

我有一个具有集合状态的 mongo 服务器。每当添加新状态时，它都会保存在我的服务器中。但是当我尝试在前端编辑集合时，它会在我的服务器中保存为另一个具有不同 ID 的新集合。如何克服这一点。

     public  static void CreateData(string pass ,string pass1)
      {

          string StateCode = pass;
          string stateName = pass1;
          insertState(StateCode, stateName);

      }



      private static void insertState(string StateCode, string stateName)
      {
        MongoServer server = MongoServer.Create(ConnectionString);
        MongoDatabase myCompany = server.GetDatabase("BackOffice");

        MongoCollection<BsonDocument> tblStates = myCompany.GetCollection<BsonDocument>("tblStates");
        BsonDocument deptartment = new BsonDocument {
                    { "State_strCode", StateCode },
                    { "State_strName", stateName },
                    {"States_strIsActive","Y"},
                    {"State_strFedExStateCode",""},
                    {"State_dtmTimeStamp",DateTime.Now}
                    };
        tblStates.Insert(deptartment);
       }

Answer 1

你最好定义一个结构或设置一个PK：

public class Customer
{
    public string name { get; set; }
    [MongoDB.Bson.Serialization.Attributes.BsonId]
    public string idCol { get; set; }
}

并像这样更新您的对象

 public void Update(Customer cus)
    {
        if (cus != null)
        {
            MongoDB.Driver.MongoClient client = new MongoClient(_connectionString);
            MongoDatabase db = client.GetServer().GetDatabase(_dbName);
            db.GetCollection(_dbName).Save(cus);
        }

    }