Displays a list of categories for all event source types, or, if specified, for a specified source type. You can see a list of the event categories and source types in the Events topic in the Amazon RDS User Guide.
 Declaration Syntax
 Declaration Syntax| C# | 
public DescribeEventCategoriesResponse DescribeEventCategories( DescribeEventCategoriesRequest describeEventCategoriesRequest )
 Parameters
 Parameters- describeEventCategoriesRequest (DescribeEventCategoriesRequest)
- Container for the necessary parameters to execute the DescribeEventCategories service method on AmazonRDS.
 Return Value
 Return ValueThe response from the DescribeEventCategories service method, as returned by AmazonRDS.