Error when creating a new foundation wall

[jordanmarr]

I am trying to create a foundation wall to go along with a newly created Wall, but the Create.NewFoundationWall is throwing this exception:

SEHException was caught

External component has thrown an exception.

Here is my code:

        private void CreateFooting(Wall wall)
        {
            var coll = new FilteredElementCollector(Doc);
            ContFootingType type = coll.OfClass(typeof(ContFootingType)).Cast<ContFootingType>().First();
            Doc.Create.NewFoundationWall(type, wall); // Throws SEHException
        }

[ollikat]

Have you ran with the debugger and checked that neither of the parameters are carbage?

Also you could provide little bit more accurate information about the thrown exception.

[jordanmarr]

The exception message:

Message: "External component has thrown an exception."

ErrorCode: -2147467259

Source: RevitAPI

That is all the information provided by the exception, and the inner exception is null. 

I believe my input parameters are not garbage, but here are copies of each from the Watch window:

ContFootingType (in Watch window):

-		type	{Autodesk.Revit.DB.ContFootingType}	Autodesk.Revit.DB.ContFootingType
-		base	{Autodesk.Revit.DB.ContFootingType}	Autodesk.Revit.DB.HostObjAttributes {Autodesk.Revit.DB.ContFootingType}
-		base	{Autodesk.Revit.DB.ContFootingType}	Autodesk.Revit.DB.ElementType {Autodesk.Revit.DB.ContFootingType}
-		base	{Autodesk.Revit.DB.ContFootingType}	Autodesk.Revit.DB.Element {Autodesk.Revit.DB.ContFootingType}
+		AssemblyInstanceId	{-1}	Autodesk.Revit.DB.ElementId
+		Category	{Autodesk.Revit.DB.Category}	Autodesk.Revit.DB.Category
		DesignOption	null	Autodesk.Revit.DB.DesignOption
+		Document	{Autodesk.Revit.DB.Document}	Autodesk.Revit.DB.Document
		Group	null	Autodesk.Revit.DB.Group
+		Id	{74960}	Autodesk.Revit.DB.ElementId
		Level	null	Autodesk.Revit.DB.Level
		Location	null	Autodesk.Revit.DB.Location
+		Materials	{Autodesk.Revit.DB.MaterialSet}	Autodesk.Revit.DB.MaterialSet
		Name	"Bearing Footing - 900 x 300"	string
		ObjectType	null	Autodesk.Revit.DB.ElementType
+		OwnerViewId	{-1}	Autodesk.Revit.DB.ElementId
+		Parameters	{Autodesk.Revit.DB.ParameterSet}	Autodesk.Revit.DB.ParameterSet
+		ParametersMap	{Autodesk.Revit.DB.ParameterMap}	Autodesk.Revit.DB.ParameterMap
		PhaseCreated	null	Autodesk.Revit.DB.Phase
		PhaseDemolished	null	Autodesk.Revit.DB.Phase
		Pinned	false	bool
+		SimilarObjectTypes	{Autodesk.Revit.DB.ElementSet}	Autodesk.Revit.DB.ElementSet
		UniqueId	"5f508b89-6196-4580-8385-8276203b8fd3-000124d0"	string
		ViewSpecific	false	bool
+		WorksetId	{0}	Autodesk.Revit.DB.WorksetId
+		Non-Public members		

Wall instance (in Watch window): 

-		wall	{Autodesk.Revit.DB.Wall}	Autodesk.Revit.DB.Wall
+		base	{Autodesk.Revit.DB.Wall}	Autodesk.Revit.DB.HostObject {Autodesk.Revit.DB.Wall}
		CurtainGrid	null	Autodesk.Revit.DB.CurtainGrid
		Flipped	true	bool
+		Orientation	{(0.000000000, 1.000000000, 0.000000000)}	Autodesk.Revit.DB.XYZ
		StructuralUsage	Bearing	Autodesk.Revit.DB.Structure.StructuralWallUsage
-		WallType	{Autodesk.Revit.DB.WallType}	Autodesk.Revit.DB.WallType
-		base	{Autodesk.Revit.DB.WallType}	Autodesk.Revit.DB.HostObjAttributes {Autodesk.Revit.DB.WallType}
-		base	{Autodesk.Revit.DB.WallType}	Autodesk.Revit.DB.ElementType {Autodesk.Revit.DB.WallType}
-		base	{Autodesk.Revit.DB.WallType}	Autodesk.Revit.DB.Element {Autodesk.Revit.DB.WallType}
+		AssemblyInstanceId	{-1}	Autodesk.Revit.DB.ElementId
+		Category	{Autodesk.Revit.DB.Category}	Autodesk.Revit.DB.Category
		DesignOption	null	Autodesk.Revit.DB.DesignOption
+		Document	{Autodesk.Revit.DB.Document}	Autodesk.Revit.DB.Document
		Group	null	Autodesk.Revit.DB.Group
+		Id	{1060}	Autodesk.Revit.DB.ElementId
		Level	null	Autodesk.Revit.DB.Level
		Location	null	Autodesk.Revit.DB.Location
+		Materials	{Autodesk.Revit.DB.MaterialSet}	Autodesk.Revit.DB.MaterialSet
		Name	"Foundation - 300mm Concrete"	string
		ObjectType	null	Autodesk.Revit.DB.ElementType
+		OwnerViewId	{-1}	Autodesk.Revit.DB.ElementId
+		Parameters	{Autodesk.Revit.DB.ParameterSet}	Autodesk.Revit.DB.ParameterSet
+		ParametersMap	{Autodesk.Revit.DB.ParameterMap}	Autodesk.Revit.DB.ParameterMap
		PhaseCreated	null	Autodesk.Revit.DB.Phase
		PhaseDemolished	null	Autodesk.Revit.DB.Phase
		Pinned	false	bool
+		SimilarObjectTypes	{Autodesk.Revit.DB.ElementSet}	Autodesk.Revit.DB.ElementSet
		UniqueId	"74e46f31-7d48-47ee-9207-931708e57a52-00000424"	string
		ViewSpecific	false	bool
+		WorksetId	{0}	Autodesk.Revit.DB.WorksetId
+		Non-Public members		
		Kind	Basic	Autodesk.Revit.DB.WallKind
		Width	0.98425196850393681	double
		Width	0.98425196850393681	double

[jordanmarr]

I still have not solved this problem.  Does anyone know if there are certain requirements on the wall object that I am passing in as a parameter? 

I really have no clue why I am getting this exception, and the error message gives no clue whatsoever as to the real nature of the problem. 

[jeremytammik · Accepted solution]

Dear Jordanmarr,

I am answering this rather belatedly, since I just saw the same issue raised for the Revit 2013 API in this thread:

http://forums.autodesk.com/t5/Revit-API/Can-t-create-wall-foundation/m-p/4896020

Here is the answer that I provided there:

I am sorry to inform you that there was an issue with the NewFoundationWall method in Revit 2013.

It has been fixed in Revit 2014.

I found this information searching through my old ADN issues and encountering case 07700489 [Error when creating a new foundation wall] and SPR #230113 [NewFoundationWall does not work] that I explored back in October 2012.

Sorry for the bad news for Revit 2013, and happy to let you know it should work fine in Revit 2014.

Best regards,

Jeremy

[jordanmarr]

Thanks Jeremy.