Sample: Retrieve multiple with the QueryExpression class
This sample shows how to retrieve multiple tables using the IOrganizationService.RetrieveMultiple(QueryBase) method with QueryExpression along with their related table columns.
How to run this sample
- Download or clone the Samples repo so that you have a local copy.
- (Optional) Edit the dataverse/App.config file to define a connection string specifying the Microsoft Dataverse instance you want to connect to.
- Open the sample solution in Visual Studio and press F5 to run the sample. After you specify a connection string in dataverse/App.config, any sample you run will use that connection information.
If you do not specify a connection string in dataverse/App.config file, a dialog will open each time you run the sample and you will need to enter information about which Dataverse instance you want to connect to and which credentials you want to use. This dialog will cache previous connections so that you can choose a previously used connection.
Those samples in this repo that require a connection to a Dataverse instance to run will include a linked reference to the dataverse/App.config file.
What this sample does
The QueryExpression class is intended to be used in a scenario where it contains a complex query expressed in a hierarchy of expressions.
How this sample works
In order to simulate the scenario described in What this sample does, the sample will do the following:
Setup
Checks for the current version of the org.
Demonstrate
- Creates multiple accounts with primary contacts.
- The
QueryExpressionclass creates a query expression specifying the link table alias and the columns of the link table that you want to return.
Clean up
No clean up is required.