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Mongodb Update or insert in c#

I want to update or insert into to mongo collection "Member". Under this collection i have an array MagazineSubscription. Here magazine Code is unique. Please refer the sample JSON.
So if need to update or insert into mongo using C# mongo driver.
First I need to check this code exist
2, If it exist update one
If it does not exist insert.
Is there any way I can do in one step. Like if it already exist update otherwise insert. Instead of hit twice. Because my collection is very big.
{
"_id" : ObjectId("5c44f7017en0893524d4e9b1"),
"Code" : "WH01",
"Name" : "Lara",
"LastName" : "John",
"DOB" : "12-10-2017",
"Gender" : "Male",
"Dependents" : [
{
"RelationShip" : "Son",
"Name" : "JOHN",
"DOB" : "01-01-1970",
"Gender" : "Male",
"Address" : "Paris",
"ContactNumber" : "+312233445666"
},
{
"RelationShip" : "Wife",
"Name" : "Marry",
"DOB" : "01-01-1980",
"Gender" : "Female",
"Address" : "Paris",
"ContactNumber" : "+312233445666"
}
]
"Matrimony" : [
{
"Fee" : 1000.0,
"FromDate" : "01-01-2015",
"ToDate" : "01-01-2017",
"Status" : false
}
],
"MagazineSubscription" : [
{
"MagazineCode" : "WSS",
"DateFrom" : "01-05-2018",
"DateTo" : "01-01-2020",
"PaidAmount" : 1000.0,
"ActualCost" : 1500.0,
"Status" : false,
"DeliveryStatus" : [
{
"ReturnedDate" : "10-01-2019",
"Comment" : "Returned because of invalid address"
},
{
"ReturnedDate" : "10-02-2019",
"Comment" : "Returned because of invalid address"
}
]
}
]
}

Use mongodb's update operation with upsert:true.
Please refer here: https://docs.mongodb.com/manual/reference/method/db.collection.update/
Here's a sample from the page:
db.collection.update(
<query>,
<update>,
{
upsert: <boolean>, //you need this option
multi: <boolean>,
writeConcern: <document>,
collation: <document>,
arrayFilters: [ <filterdocument1>, ... ]
}
)
And here's a similar question according to what you need:
Upserting in Mongo DB using official C# driver
EDIT 1
Steps:
First you need to write a filter to scan if the document exists. you can check any number of keys (Essentially a document).
Write the update section with the keys you'd like to update (Essentially a document).
Set upsert to true.
Mongodb will use your filter to search the document. If found, it will use the update section to perform the update mentioned by you.
In case the document does not exist, a new document will be created by using the filter keys + keys in the update part.
Hope that makes things clear as I have never used a C# mongo driver. So I won't be able to provide you the exact syntax.
EDIT 2
I'm providing #jeffsaracco's solution here:
MongoCollection collection = db.GetCollection("matches");
var query = new QueryDocument("recordId", recordId); //this is the filter
var update = Update.Set("FirstName", "John").Set("LastName","Doe"); //these are the keys to be updated
matchCollection.Update(query, update, UpdateFlags.Upsert, SafeMode.False);

Sort Specification of Non-Document nested Array during a $push operation

Given a document structure:
[{
_id: ObjectId("someId"),
Property: {
CollectionProperty: [{
ItemKey: 28,
StringArray: [
"ItemA",
"ItemB"
]
}]
}
}]
Performing the following operation in the mongo shell does what I want:
db.getCollection('collection').updateOne(
{
"_id" : ObjectId("someId"),
"Property.CollectionProperty.ItemKey" : 28
},
{ $push :
{
"Property.CollectionProperty.$.StringArray" : {
$each : [ "AItemA" ],
$sort : 1
}
}
});
However, I cannot find in the documentation or anywhere on the net how to reproduce THAT $sort command in C# code. I can reproduce if it had fields by using "field":1, but not a non-document array like that.
The mongodb documentation that describes that sort is here:
MongoDB Sort Elements that are not documents
Here's what I have in C# so far:
Builders<DataType>.Update.PushEach("Property.CollectionProperty.$.StringArray",
new[] { "AItemA" }, null, null, ???)));
The ??? is what I don't know how to do... does anyone have any suggestions?
TIA

This is apparently currently unsupported, but planned for a future release in the C# driver, as documented here:
https://jira.mongodb.org/browse/CSHARP-1271

Find an specific element in a MongoDB document from C#

I am trying to access MongoDB from C# ASP.NET application.
Let's assume, I've a document like below-
{
"_id" : ObjectId("546c776b3e23f5f2ebdd3b03"),
"Name" : "Test",
"Values" : [
{
"Name" : "One",
"Value" : 1
},
{
"Name" : "Two",
"Value" : 2,
"Parameters": [{"Type": "Type A"}, {"Type": "Type B"}]
}
]
}
Please note that, only the _id and Name elements are fixed; other elements are dynamically created by the user where both the key and value are defined by the user.
Now, I would like to search for the element Type with the value Type A. How can I do this from a MongoDB C# driver?

You can use this code:
var query = Query.EQ("Values.Parameters.Type", "Type A");
var items = collection.Find(query).ToList();
If you data has structure use this:
var items = collection.FindAs<Item>(query).ToList();
Edit:
For dynaically search the only way comes to my mind is full-text-search:
Step1: Define a full text-search on all fields via db.test.ensureIndex({"$**" : "text"});
Step2: Search your query db.test.find( { $text: { $search: "Type A" } } )
If its your answer, the C# code should be easy.

Below aggregation query may solve your problem but I don't know how to write this in C#
db.collectioName.aggregate({"$unwind":"$Values"},
{"$unwind":"$Values.Parameters"},
{"$match":{"Values.Parameters.Type":"Type A"}},
{"$group":{"_id":"$Values"}})

"Extra" nesting in MongoDB C# driver

I have some document stored in MongoDB (2.4.9) with and array if documents field:
{
"_id" : "some id",
"class" : "somevalue",
...
"externalAlarmDefinition" : [
{
"idx" : 1,
"inputId" : 1
},
{
"idx" : 2,
"inputId" : 2
},
...
{
"idx" : 6,
"inputId" : 7
}
]
}
For some reason, when I query this object I get BsonElement who's value is a BsonArray with one element - that element in turn is another BsonArray which contains the actual BsonDocuments. See image for the structure:
Does this make sense? I expected that the value of the BsonElement would be a BsonArray with the 6 BsonDocuments.
Am I missing something - can someone explain this?
I am using Mongo Driver 1.9.1.221 that I got using nuget

Mongodb Array ElemMatch

I have a collection of documents:
"_id" : ObjectId("500d1aa9cf6640c15214fc30"),
"Title" : "Title0",
"Description" : "Description0",
"Keywords" : ["Keyword000", "Keyword001", "Keyword002", "Keyword003", "Keyword004", "Keyword005", "Keyword006", "Keyword007", "Keyword008", "Keyword009"],
"Category" : 0
I would like to query for items that have one keyword:
var query = Query.ElemMatch("Keywords", Query.EQ(XXX, "Keyword003"));
I have no idea on what to query on Query.EQ.
By turning the example into:
"_id" : ObjectId("500d4393cf6640c152152354"),
"Title" : "Title0",
"Description" : "Description0",
"Keywords" : [{
"Value" : "Keyword000"
}, {
"Value" : "Keyword001"
}],
"Category" : 0
And querying by
var query = Query.ElemMatch("Keywords", Query.EQ("Value", "Keyword001"));
I have no problem on getting the results.
Thank you.

The MongoDB query engine treats queries of the form { x : 123 } differently when x is an array. It matches any document where the x array contains 123. See:
http://www.mongodb.org/display/DOCS/Advanced+Queries#AdvancedQueries-ValueinanArray
In your case, the query:
Query.EQ("Keywords", "Keyword003")
will match any document where the Keywords array contains "Keyword003". It might also contain other values, but that doesn't matter.
ElemMatch is only needed when the array is an array of embedded documents and you want to write a complex test against each of the embedded documents.

Have you tried quering keywords like the other keys in your document? The driver will returns the documents that contain the provided keyword
Bye