How to convert the text to bsondocument and inverse with C#?

[沉渔涧]

I'm trying to offer some functions that allow the user to modify the existing bsondocument through the GUI, currently I'm in this phase:

I show the whole hierarchy of the bsondocument in a treeview.

and my questions is :

1. if I  allow user to only to modify the node and its value that he selects, how should I find the correponding bson element in the bsondocument?

2, if I offer some text edting GUI that allow user to modify any part of the bsondocument, and my software should deal with both how bsondocument converted into a well indented text format, and how read the modified text back so that I can serialize it inversely as a updated bsondocument.

[craiggwilson]

1) So, this is fairly unrelated to the driver itself and really more dependent upon the GUI piece and what technology you are using.  If you are using the built-in Windows Forms TreeView control, then there is a Tag property on each node.  You can assign the BsonElement to this Tag property so that when the user edits it, you know exactly what to apply the changes to.  A deletion would mean you'd need to move to the node's parent and remove the element referenced by the subnode's Tag.  e.g. node.Parent.Tag.Remove(node.Tag).  

There are a gillion ways of doing this, and none really relate to the driver itself.

2) You are going to need a JSON parser to get the object into a form you can use. We have a JsonReader that can read a string of json and convert it into a document.  This may take some work and some looking into as I'm unfamiliar with how to accomplish this yet.  I'll try and follow up later with an example.

[craiggwilson]

As for #2: this is accomplished with this code:

  BsonSerializer.Deserialize<BsonDocument>(json);

[trypsin]

@ craiggwilson
So, the process goes as following : general text -> json ->
bsondocument ?

[craiggwilson]

Yes.  But if "general text" is json, then you don't need to parse it first.  

var json = textbox.Text;

var document = BsonSerializer.Deserialize<BsonDocument>(json);