Do you want to import csv or excel (xls, xlsx) file in MongoDB? You can read the file, get the data in C# datatable and save it to MongoDB using InsertBatch method. This article explains how to save C# DataTable to MongoDB for inserting a large amount of data.
To install Official .NET driver for MongoDB, run the following command in the Package Manager Console
Sails.js allows you to build custom, enterprise-grade Node.js apps using the Model-View-Controller pattern to organize your code so it is easier to maintain.
New MEAN Stack = MongoDB+ExpressJS+AngularJS+Node.js+Sails.js = MEANS stack
This article explains how to implement a simple CRUD by integrating AngularJS with Sails REST APIs.