Home » Microsoft » 70-487 v.2 » Which CommandBehavior type should you use?
You are developing an ASP.NET MVC application that displays a report. The report includes large images that are stored in a database. Members of the EntityClient namespace are used to access the database through the ADO.NET Entity Framework data model.
You need to prevent memory exceptions while generating a report using the EntityDataReader type.
Which CommandBehavior type should you use?
A. SequentialAccess
B. SingleRow
C. SingleResult
D. FastForwardReadOnly
Correct Answer: A
Explanation/Reference:
Explanation:
SequentialAccess provides a way for the DataReader to handle rows that contain columns with large binary values. Rather than loading the entire row, SequentialAccess enables the DataReader to load data as a stream. You can then use the GetBytes or GetChars method to specify a byte location to start the read operation, and a limited buffer size for the data being returned.
