Selection by polygon/line doesn't work with ArcGIS Servce Map Services.
The multiselect plugin utilizes the corresponding WFS when using selection by polygon/line on a WMS layer. For obvious reasons, this scheme will not work with AGS Map Services.
Looking at the AGS services reference, it seems like the AGS Map Service Identify tool supports requests by multiple geometry types, like point, polygon and "envelope" (a.k.a bounding box). No need for WFS in this case then.
Oh, it might be a good idea to have a look at AGS Feature Service compatibility as well, while at it.
Selection by polygon/line doesn't work with ArcGIS Servce Map Services.
The multiselect plugin utilizes the corresponding WFS when using selection by polygon/line on a WMS layer. For obvious reasons, this scheme will not work with AGS Map Services.
Looking at the AGS services reference, it seems like the AGS Map Service Identify tool supports requests by multiple geometry types, like point, polygon and "envelope" (a.k.a bounding box). No need for WFS in this case then.
Oh, it might be a good idea to have a look at AGS Feature Service compatibility as well, while at it.