PostCommand

[Anonymous]

Hi,

I am using the following code:

RevitCommandId commandId = RevitCommandId.LookupPostableCommandId(PostableCommand.PlaceAComponent);

bool b = uiapp.CanPostCommand(commandId); // returns true
uiapp.PostCommand(commandId);

but it always places furbiture-desk. Can please anybody help me out in placing a group.

Thanks & Regards

Sanjay Pandey

[Mustafa.Salaheldin]

What do you want to do in first place?

[RevitArkitek]

The API help says it will place based on a selected element type.  Try putting the GroupType into the UIDocument.Selection then call PostCommand

[Anonymous]

I am trying to mimick group placement. Exactly the same way we place group manually

Thanks & Regards

Sanjay Pandey

[jeremytammik]

You should probably not be trying to use PostCommand. 

Take a look at PromptForFamilyInstancePlacement instead.

There are lots of discussions on it in The Building Coder.

Cheers,

Jeremy

[Anonymous]

Hi,

Thanks for your suggestion.

I tried your suggestion. I first placed the group and selected it and called the code:

ICollection<ElementId> eed = uidoc.Selection.GetElementIds();

uidoc.Selection.SetElementIds(eed);

RevitCommandId commandId = RevitCommandId.LookupPostableCommandId(PostableCommand.PlaceAComponent );
bool b = uiapp.CanPostCommand(commandId); // returns true
uiapp.PostCommand(commandId);

but it always places desk

Thanks & Regards

Sanjay Pandey

[Anonymous]

Hi,

PromptForFamilyInstancePlacement does not work for group placement.

Thanks & Regards

Sanjay Pandey

[Anonymous]

on further exploration I found PostableCommand.PlaceAComponent only works for family instances

Thanks & Regards

Sanjay Pandey

[RevitArkitek]

I said the GroupType not a group instance.  Get the element ID of the GroupType and place that in selection.  This is the same as if you were looking at the properties of a group or family from the Project Browser.  I do not know if it will still work or not though.

[Anonymous]

Hi,

Thanks for the support.But I am loosing hope now. I will depict the out come of the following code via screenshots:

 FilteredElementCollector collector = new FilteredElementCollector(Command.doc).OfClass((typeof(GroupType)));
           var groupTypes = from element in collector
                            where element.Name == "MICRO PAD OE 45"
                            select element;
           Element groupType = groupTypes.First();
           GroupType ty = (GroupType)groupType;
           ICollection<ElementId> eed = new Collection<ElementId>();
           eed.Add(ty.Id);
           uidoc.Selection.SetElementIds(eed);
           RevitCommandId commandId = RevitCommandId.LookupPostableCommandId(PostableCommand.PlaceAComponent);
           bool b = uiapp.CanPostCommand(commandId); // returns true
           uiapp.PostCommand(commandId);

OUTCOME OF THE CODE:

AS I Told you this works only with family Instances only. Also I have no clue why it picked up the desk to place.

Thanks & Regards

Sanjay Pandey

[Mustafa.Salaheldin · Accepted solution]

Oh god don't you ever lose hope

Here is the solution

        public Result Execute(ExternalCommandData cmdData, ref string msg, ElementSet elemSet)
        {
            _cachedCmdData = cmdData;

            try
            {
                //TODO: add your code below.
                FilteredElementCollector collector = new FilteredElementCollector(cmdData.Application.ActiveUIDocument.Document).OfClass((typeof(GroupType)));
                var groupTypes = from element in collector
                                 where element.Name == "MICRO PAD OE 45"
                                 select element;
                Element groupType = groupTypes.First();
                GroupType ty = (GroupType)groupType;

                cmdData.Application.ActiveUIDocument.PostRequestForElementTypePlacement (ty); //for revit 2015 and later

                return Result.Succeeded;
            }
            catch (Exception ex)
            {
                msg = ex.ToString();
                return Result.Failed;
            }
        }

If this statisfies your needs, don't forget to mark this reply as an answer.

[Anonymous]

WOW WOW WOW.

That worked like charm. Thanks a Ton.

Thanks & Regards

Sanjay pandey

[Mustafa.Salaheldin]

Good to hear that.

[Anonymous]

I have already accepted your solution(marked as answer) along with a Kudo.
Thanks once again.

[jacsmithstrongtie]

@Mustafa.Salaheldin Do you have any experience working with the PostableCommand.MirrorProject Post Command?  Also does what you shared with @Anonymous work from clicking a button in the ribbon or does the command you wrote for him generated automatically?  Sorry I am a new developer, and I am trying see if I can automate the Mirror Project feature in Revit 2024.