You will need to add a data source component which connects to your mock object
at design time. This will stop the NeedDataSource event from firing since it fires only when the data source is set to none
To avoid this behavior, you can either set the data source to null programmatically in your application, or leave the report without a data source. In the latter scenario, you will have to write the data fields in expressions manually, since the data schema will not be available.
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