The ActionFilterQueryString allows to take one or more parameters that are already provided in the URL and transfer them to other webparts.
Simply we have to configure in the webpart properties the parameters names, they must be separated by commas in the event that there is more than one.
In the "Variable Names" field we will introduce the variables names separated by commas, for example to take the CustomerID parameter as an http://<url>?CustomerID=100 URL we must introduce CustomerID
Once the parameter’s name is introduced we will be able to connect the ActionFilterQueryString to another WebPart, This web part can be an ActionEditor, ActionGrid or any other in SharePoint
Later we have to match the Consumer with the server ( they don’t need to have the same name)
Once the connection is completed we can transfer a parameter in the URL, which will be collected by the ActionFilterQueryString and delivered to the corresponding webpart. In the picture below it has been used to filter the orders belonging to a client.
