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"  
 var person =  new person () 
 {
     id    =  "365" , 
     name =      age  = 32 , 
}; 
 
 //           Insert
Collection. insertone(person);
//Enquiry
Collection. Find(i-=-I-Name = = "Jack");
//Update
Collection. Replaceone(i + = Id = = "365", person);
//Delete
collection. Deleteone(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.

//Enquiry
result = collection. Find(Builders<person);.  Filter.  Eq(i=>i.Name, "Jack").  ToList();

//Update
Collection. replaceone(Builders<person).  Filter.  Eq(i + =Id, "365"), person);

//Update Partial fields
Collection.Updateone(builders<person>. filter. Eq ,  ), 
     builders<person>. update. Setage , 30)); 
 
 //           Delete
collection. deleteone(Builders<person).  Filter.  Eq(i + =Id, "365"));            

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

//Enquiry
result = collection. Find("{Name: ' Jack '}").  ToList();

//Update
Collection. updateone("{Name: ' Jack '}", "{$set: {' age ': ' PNs '}}");

//Delete
collection. deleteone("{Name: ' Jack '}");     

This approach is similar to SQL, very concise, but the loss of type checking, as to how to use, you need to see the specific situation.

Reference Documentation:

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

MongoDB simple to use-basic operation