MongoDB simple to use-basic operation

The Bson document is directly supported by MongoDB itself, and the Bson document corresponds to the Bsondocument class in the official driver of C #:

  var  bsondoc = new  bsondocument () 
 {
     [< Span style= "color: #a31515;" > "_id" " 123 " , 
      [ "Name" ] =       [ "age" ]  = 32, 
};         

Because Bson is very similar to JSON itself, it is as easy as JSON to convert from. NET objects to each other.

PublicClassPerson
{
PublicStringId{Get;Set; } ="123";
PublicStringName{Get;Set; }
Public int     age  {  getset; } 
} 
 
  person = bsonserializer. Deserialize<person > (Bsondoc); 
 var doc = person. Tobsondocument          

The additions and deletions of MongoDB itself are done directly for Bson documents:

var collection = database. Getcollection<bsondocument> ("foo"); collection. Insertone (Bsondoc);

However, for ease of use, you can also use a strongly typed collection.

varCollection = database. Getcollection<person> ("Foo");varperson =NewPerson () {Id="365", Name="Jack", Age= +,}; //Insertcollection.                                        Insertone (person); //EnquiryCollection. Find (i = I.name = ="Jack"); //UpdateCollection. Replaceone (i = i.id = ="365", person); //DeleteCollection. Deleteone (i = i.id = ="365");

Because LINQ is supported, it is very convenient to use. Of course, you can also use the query function of MongoDB itself.

//Enquiryresult = collection. Find (BUILDERS&LT;PERSON&GT;. Filter.eq (I=>i.name,"Jack")). ToList ();//UpdateCollection. Replaceone (BUILDERS&LT;PERSON&GT;. Filter.eq (i = i.id,"365"), person); //Update Partial fieldsCollection. Updateone (BUILDERS&LT;PERSON&GT;. Filter.eq (i = i.id,"365"), Builders<person>. Update.set (i = i.age, -)); //DeleteCollection. Deleteone (BUILDERS&LT;PERSON&GT;. Filter.eq (i = i.id,"365"));

Even if you can use the MONGDB command, you can also use the MONGO command directly, more concise.

//Enquiryresult = collection. Find ("{Name: ' Jack '}").                                                    ToList (); //UpdateCollection. Updateone ("{Name: ' Jack '}","{$set: {' age ': ' PNs '}}"); //DeleteCollection. Deleteone ("{Name: ' Jack '}");

这种方式类似Sql，非常简洁，但是失去了类型检查，至于如何选择，则需要看具体场合了。

Reference Documentation:

• Definitions and Builders
• MongoDB Tutorials
• MongoDB with C #

MongoDB simple to use-basic operation