Namespace: Autodesk.Revit.DB

IFailuresProcessor

Interface

Description:
To create your own UI or fully automated tool to process Revit Failures, derive a class from this interface.

Remarks:
To override Revit default Failures Processing UI, instantiate your own processor derived from this interface and register it in Revit application.

Syntax

public interface IFailuresProcessor

Public Interface IFailuresProcessor

public interface class IFailuresProcessor

Examples

[Autodesk.Revit.Attributes.Transaction(Autodesk.Revit.Attributes.TransactionMode.Manual)]

public class MyFailuresUI : IExternalApplication
{
    static AddInId m_appId = new AddInId(new Guid("9F179363-B349-4541-823F-A2DDB2B86AF3"));
    public Result OnStartup(UIControlledApplication application)
    {
        IFailuresProcessor myFailUI = new FailUI();
        Autodesk.Revit.ApplicationServices.Application.RegisterFailuresProcessor(myFailUI);
        return Result.Succeeded;
    }

    public Result OnShutdown(UIControlledApplication application)
    {
        return Result.Succeeded;
    }

    public class FailUI : IFailuresProcessor
    {
        public void Dismiss(Document document)
        {
            // This method is being called in case of exception or document destruction to 
            // dismiss any possible pending failure UI that may have left on the screen
        }

        public FailureProcessingResult ProcessFailures(FailuresAccessor failuresAccessor)
        {
            IList<FailureResolutionType> resolutionTypeList = new List<FailureResolutionType>();
            IList<FailureMessageAccessor> failList = new List<FailureMessageAccessor>();
            // Inside event handler, get all warnings
            failList = failuresAccessor.GetFailureMessages(); 
            string errorString = "";
            bool hasFailures = false;
            foreach (FailureMessageAccessor failure in failList)
            {
                // check how many resolutions types were attempted to try to prevent
                // entering infinite loop
                resolutionTypeList = failuresAccessor.GetAttemptedResolutionTypes(failure);
                if (resolutionTypeList.Count >= 3)
                {
                    TaskDialog.Show("Error", "Cannot resolve failures - transaction will be rolled back.");
                    return FailureProcessingResult.ProceedWithRollBack;
                }

                errorString += "IDs ";
                foreach (ElementId id in failure.GetFailingElementIds())
                {
                    errorString += id.ToString() + ", ";
                    hasFailures = true;
                }
                errorString += "\nWill be deleted because: " + failure.GetDescriptionText() + "\n";
                failuresAccessor.DeleteElements(failure.GetFailingElementIds() as IList<ElementId>);
            }
            if (hasFailures)
            {
                TaskDialog.Show("Error", errorString);
                return FailureProcessingResult.ProceedWithCommit;
            }

            return FailureProcessingResult.Continue;
        }
    }
}

<Autodesk.Revit.Attributes.Transaction(Autodesk.Revit.Attributes.TransactionMode.Manual)> _
Public Class MyFailuresUI
    Implements IExternalApplication
    Shared m_appId As New AddInId(New Guid("9F179363-B349-4541-823F-A2DDB2B86AF3"))
    Public Function OnStartup(application As UIControlledApplication) As Autodesk.Revit.UI.Result Implements IExternalApplication.OnStartup
        Dim myFailUI As IFailuresProcessor = New FailUI()
        'Autodesk.Revit.ApplicationServices.Application.RegisterFailuresProcessor(myFailUI);
        Return Result.Succeeded
    End Function

    Public Function OnShutdown(application As UIControlledApplication) As Autodesk.Revit.UI.Result Implements IExternalApplication.OnShutdown
        Return Result.Succeeded
    End Function

    Public Class FailUI
        Implements IFailuresProcessor
        Public Sub Dismiss(document As Document) Implements IFailuresProcessor.Dismiss
            ' This method is being called in case of exception or document destruction to 
            ' dismiss any possible pending failure UI that may have left on the screen
        End Sub

        Public Function ProcessFailures(failuresAccessor As FailuresAccessor) As FailureProcessingResult Implements IFailuresProcessor.ProcessFailures
            Dim resolutionTypeList As IList(Of FailureResolutionType) = New List(Of FailureResolutionType)()
            Dim failList As IList(Of FailureMessageAccessor) = New List(Of FailureMessageAccessor)()
            ' Inside event handler, get all warnings
            failList = failuresAccessor.GetFailureMessages()
            Dim errorString As String = ""
            Dim hasFailures As Boolean = False
            For Each failure As FailureMessageAccessor In failList
                ' check how many resolutions types were attempted to try to prevent
                ' entering infinite loop
                resolutionTypeList = failuresAccessor.GetAttemptedResolutionTypes(failure)
                If resolutionTypeList.Count >= 3 Then
                    TaskDialog.Show("Error", "Cannot resolve failures - transaction will be rolled back.")
                    Return FailureProcessingResult.ProceedWithRollBack
                End If

                errorString += "IDs "
                For Each id As ElementId In failure.GetFailingElementIds()
                    errorString += id.ToString() + ", "
                    hasFailures = True
                Next
                errorString += vbLf & "Will be deleted because: " + failure.GetDescriptionText() + vbLf
                failuresAccessor.DeleteElements(TryCast(failure.GetFailingElementIds(), IList(Of ElementId)))
            Next
            If hasFailures Then
                TaskDialog.Show("Error", errorString)
                Return FailureProcessingResult.ProceedWithCommit
            End If

            Return FailureProcessingResult.[Continue]
        End Function
    End Class
End Class