Public Function New( _
   ByVal methodName As String, _
   ByVal projection As IProjectionSelector, _
   Optional ByVal alias As String _
)

Dim methodName As String
Dim projection As IProjectionSelector
Dim alias As String
 
Dim instance As New ProjectionSelector(methodName, projection, alias)

public ProjectionSelector( 
   string methodName,
   IProjectionSelector projection,
   string alias
)

public:
ProjectionSelector( 
   String^ methodName,
   IProjectionSelector^ projection,
   String^ alias
)

public void DynamicGroupAndSum() {
  var query = EntityQuery.Create(typeof(Order), manager)
    .GroupBy(new ProjectionSelector("ShipCity"))
    .Select(
          new ProjectionSelector("Key", "ShipCity").Combine(
          new ProjectionSelector("Select", new ProjectionSelector("Freight")).Dot("Sum()").WithAlias("Sum")
    ));
  var list = query.Execute();
}