CustomDataSetAdapter.CustomDataSetAdapter Constructor
Initializes a new instance of the CustomDataSetAdapter class.
CustomDataSetAdapter(Crs crs, System.Boolean readOnlyFeatures)
Initializes a new instance of the CustomDataSetAdapter class.Syntax
public CustomDataSetAdapter (
Crs crs,
System.Boolean readOnlyFeatures
)Parameters
The coordinate reference system of the custom dataset.
Specifies whether the custom dataset returns read-only features.
Remarks
The semantics for the possible values of the readOnlyFeatures parameter are as follows:
True - The CustomDataSetProxy will assume that the features returned by the custom dataset implementation will not be modified. The proxy can therefore safely mark them as read-only (which means any attempt to modify them afterwards will raise an exception) and pass them into an operator chain without cloning them first. A common use case for this scenario is a custom dataset that reads static data stored in an otherwise unsupported data format and maintains its own internal cache of features.
False - The CustomDataSetProxy will always clone the features returned by the custom dataset implementation.
The value of the readOnlyFeatures parameter also interacts with how the proxy decides whether features returned by the custom dataset should be disposed automatically or not. Specifically, a custom dataset that implements IMinimizeGarbageCollection will only dispose features when readOnlyFeatures is False.
Platforms
Windows, Linux, Android