.NET Connector for QuickBooks Online

dotConnect for QuickBooks Online is an ADO.NET provider for working with QuickBooks Online data through the standard ADO.NET or Entity Framework interfaces. It allows you to easily integrate QuickBooks data into your .NET applications, and integrate QuickBooks services with widely used data-oriented technologies.

dotConnect for QuickBooks Online has the same standard ADO.NET classes as other standard ADO.NET providers: QuickBooksConnection, QuickBooksCommand, QuickBooksDataAdapter, QuickBooksDataReader, QuickBooksParameter, etc. This allows you quickly get started with it and eliminates the need to study any QuickBooks data access specificities.

Connect QuickBooks Online Data With .NET Application Easily

dotConnect for QuickBooks Online makes it simple to create .NET applications in C#, VB, or other languages, working with QuickBooks Online data. It offers standard ADO.NET interface, and thus it's easy to master it. It's powerful design-time editors together with seamless Visual Studio integration allow you to work with QuickBooks Online data with less efforts and less code writing. See how easy it is with dotConnect for QuickBooks Online.

Connecting to QuickBooks Online from Server Explorer

To create a Server Explorer connection, you just need to:

Click Connect to Database on the Server Explorer toolbar
Change Data Source to QuickBooks Online Data Source
Specify the login url to the data source, your QuickBooks Online user id and password

That's all, now you can work with QuickBooks Online data right in Visual Studio - select data from QuickBooks Online entities and edit it.

QuickBooks Online connection in Server Explorer

QuickBooks Online Data Binding

Build your data access layer without writing code manually
Configure dotConnect for QuickBooks Online components in powerful design-time editors
Bind data grids and other controls to QuickBooks Online data just by configuring the smart tags
Work with QuickBooks Online data just like with a database

Power of SQL

dotConnect for QuickBooks Online allows you to perform SQL queries against your QuickBooks Online data. Use SQL statements to work with QuickBooks Online accounts, contacts, leads, contracts, products, campaigns opportunities, and other objects.

Our provider offers full CRUD (Create, Read, Update, and Delete) support and allows you to get QuickBooks Online data with SELECT statements and manage data with INSERT, UPDATE, and DELETE statements.

No need to study and use complex QuickBooks Online API, just use familiar SQL statements. You may use complex JOINs, WHERE conditions, etc. - all the SQL benefits, not available with QuickBooks Online API.

Entity Framework Support

dotConnect for QuickBooks Online allows you to access QuickBooks Online data via Entity Framework - Microsoft's recommended data access technology. It supports Entity Framework v4, v5, v6, and Entity Framework Core, and enables you to use the following Entity Framework features with QuickBooks Online data:

LINQ to Entities (no need for QuickBooks Online API)
Entity relations with lazy/eager loading
No need to post each edited/created object separately - a single SaveChanges() call to persist all the changed objects

dotConnect for QuickBooks Online provides enhanced Entity Framework support for QuickBooks Online data with a bundled visual designer for ORM models with Visual Studio integration - Entity Developer. Standard Visual Studio Entity Data Model designer is also supported.

How it Works

Advanced Queries

Simple Queries

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More complex queries are split in parts, and parts of query are executed against QuickBooks Online

Simple queries are directly compiled to QuickBooks Online calls

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Our local SQL engine processes the results and applies advanced SQL features, used in the query

These API calls are executed on QuickBooks Online side providing the best performance

Data
Returned data are passed to the application

dotConnect for QuickBooks Online offers powerful local SQL engine for SELECT statement execution. It executes SQL statements in the following way:

Simple SQL statements are translated to QuickBooks Online API calls and executed on the QuickBooks Online side directly. However, dotConnect for QuickBooks Online also supports more advanced SQL features, such as SQL functions or expressions, complex WHERE conditions, joins, etc.

If you use these more advanced SQL features, dotConnect for QuickBooks Online queries all the data from the objects that participate in the query, and executes the statement locally.

How to Start

dotConnect for QuickBooks Online has a detailed documentation that can help you quickly get started with our product. Read our tutorials first:

Connect

Connecting to QuickBooks Online

This tutorial describes how to connect to QuickBooks Online either from Visual Studio Server Explorer or from application code via QuickBooksConnection.

Read Tutorial

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