| Overload | Description |
|---|---|
| CountFunction Constructor() | Initializes a new instance of the CountFunction class. |
| CountFunction Constructor(String,String) | Initializes a new instance of the CountFunction class specifying the result and source property name. |
| CountFunction Constructor(String,String,Boolean) | Initializes a new instance of the CountFunction class specifying the result and source property name as well as indicating whether null (Nothing in Visual Basic) and DBNull values are to be counted. |