topic Re: Unable to select Object from the form in Revit API Forum

Unable to select Object from the form

Arciviz — Thu, 10 Aug 2023 08:54:31 GMT

Unable to select Object from "Click Button" in the form.

private void DrawBySelect_Click(object sender, EventArgs e) { IsolatedFootingDGVData = IsolatedFootingDGV; var sel = uiDoc.Selection; this.Hide(); var selectionFilter = new KJF.FamilySelectionFilter( doc, BuiltInCategory.OST_StructuralFoundation, "Isolated RCC Footing 2022_BT"); var elem = doc.GetElement( sel.PickObject(ObjectType.Element, selectionFilter)) as FamilyInstance; var design_ID = elem.get_Parameter(BuiltInParameter.ELEM_TYPE_PARAM).AsValueString(); var row = IsolatedFootingDGV.Rows.Cast<DataGridViewRow>() .Where(r => r.Cells["DesignID"].Value.ToString().Equals(design_ID)).First(); this.Show(); }

Re: Unable to select Object from the form

Arciviz — Thu, 10 Aug 2023 10:37:25 GMT

Resolved

https://forums.autodesk.com/t5/revit-api-forum/call-revit-s-api-from-external-thread/td-p/5941308

Re: Unable to select Object from the form

RPTHOMAS108 — Thu, 10 Aug 2023 11:42:59 GMT

The alternative depending on the complexity of your form would be to close the form after saving it's state carry out the selection operation and then reshow the form with values reinstated.

Save values from form
Call Form.Close
Carry out Revit selection operation
Create new Form adding values back from (1)
ShowDialog

For a simple modal dialogue this is often more straightforward than external event.

If your form is modeless then external event is the way to do.