Nice3point.Revit.Extensions 2025.0.1-preview.1.0

Improve your experience with Revit API

Extensions bring a fresh, intuitive way to interact with the Revit API. By adding extension methods, they make your code more readable, maintainable, and concise.

Forget about complex utility methods — extensions provide a fluent syntax that lets you focus on what matters:

new ElementId(123469)
    .ToElement<Door>()
    .Mirror()
    .FindParameter("Height")
    .AsDouble()
    .ToMillimeters()
    .Round()

Seamless integration with modern .NET features like Nullable and Generics gives you greater flexibility and control over your code.

Installation

You can install Extensions as a nuget package.

Packages are compiled for a specific version of Revit, to support different versions of libraries in one project, use RevitVersion property.

<PackageReference Include="Nice3point.Revit.Extensions" Version="$(RevitVersion).*"/>

Package included by default in Revit Templates.

Table of contents

• Element extensions
  • Element transform extensions
  • Element association extensions
  • Element worksharing extensions
  • Element schema extensions
• ElementId extensions
  • ElementId transform extensions
• Application extensions
  • Ribbon Extensions
  • ContextMenu Extensions
• Document extensions
  • Document managers extensions
• Geometry extensions
  • Element geometry extensions
• Parameters extensions
  • Document global parameters extensions
• FilteredElementCollector extensions
• ForgeTypeId extensions
• Unit Extensions
• Label Extensions
• Color extensions
• Family extensions
• Host class extensions
• Plumbing extensions
• Solid extensions
  • Element solid cut extensions
• View extensions
  • View managers extensions
• Part extensions
  • Element part extensions
  • ElementId parts extensions
• Imperial Extensions
• System Extensions

Element extensions

FindParameter extension finds a parameter in the instance or symbol by identifier. For instances that do not have such a parameter, this method will find and return it at the element type. This method combines all API methods for getting a parameter into one, such as get_Parameter, LookupParameter, GetParameter.

var parameter = element.FindParameter(ParameterTypeId.AllModelUrl);
var parameter = element.FindParameter(BuiltInParameter.ALL_MODEL_URL);
var parameter = element.FindParameter("URL");

Element transform extensions

Copy extension copies an element and places the copy at a location indicated by a given transformation.

element.Copy(1, 1, 0);
element.Copy(new XYZ(1, 1, 0));

Mirror extension creates a mirrored copy of an element about a given plane.

element.Mirror(plane);

Move extension moves the element by the specified vector.

element.Move(1, 1, 0);
element.Move(new XYZ(1, 1, 0));

Rotate extension rotates an element about the given axis and angle.

element.Rotate(axis, angle);

CanBeMirrored extension determines whether element can be mirrored.

var canRotate = element.CanBeMirrored();

CanBeMirrored extension determines whether element can be mirrored.

var canRotate = element.CanBeMirrored();

Element association extensions

IsAnalyticalElement extension returns true if the element is an analytical element.

var isAnalytical = element.IsAnalyticalElement();

IsPhysicalElement extension returns true if the element is a physical element.

var isPhysical = element.IsPhysicalElement();

Element worksharing extensions

GetCheckoutStatus extension gets the ownership status of an element.

var status = element.GetCheckoutStatus();

GetCheckoutStatus extension gets the ownership status and outputs the owner of an element.

var status = element.GetCheckoutStatus(out var owner);

GetCheckoutStatus extension gets worksharing information about an element to display in an in-canvas tooltip.

var info = element.GetWorksharingTooltipInfo();

GetModelUpdatesStatus extension gets the status of a single element in the central model.

var status = element.GetModelUpdatesStatus();

Element schema extensions

SaveEntity extension stores data in the element. Existing data is overwritten.

document.ProjectInformation.SaveEntity(schema, "data", "schemaField");
door.SaveEntity(schema, "white", "doorColorField");

LoadEntity extension retrieves the value stored in the schema from the element.

var data = document.ProjectInformation.LoadEntity<string>(schema, "schemaField");
var color = door.LoadEntity<string>(schema, "doorColorField");

ElementId extensions

ToElement extension gets the element from the ID for a specified document.

Element element = wallId.ToElement(document);
Wall wall = wallId.ToElement<Wall>(document);

AreEquals extension checks if an ID matches BuiltInСategory or BuiltInParameter.

categoryId.AreEquals(BuiltInCategory.OST_Walls);
parameterId.AreEquals(BuiltInParameter.WALL_BOTTOM_IS_ATTACHED);

ElementId transform extensions

CanMirrorElements extension determines whether elements can be mirrored.

var canMirror = elementIds.CanMirrorElements(document);

MirrorElements extension mirrors a set of elements about a given plane.

var elements = elementIds.MirrorElements(document, plane, mirrorCopies: true);

MoveElements extension moves a set of elements by a given transformation.

elementIds.MoveElements(document, new XYZ(1, 1, 1));

RotateElements extension rotates a set of elements about the given axis and angle.

elementIds.RotateElements(document, axis, angle: 3.14);

CopyElements extension copies a set of elements from source view to destination view.

var copy = elementIds.CopyElements(source, destination);
var copy = elementIds.CopyElements(source, destination, transform, options);

CopyElements extension copies a set of elements and places the copies at a location indicated by a given translation.

var copy = elementIds.CopyElements(document, new XYZ(1, 1, 1));

Application extensions

SetMacroSecurityOptions extension sets the application macro security options.

application.SetMacroSecurityOptions(ApplicationMacroOptions.EnableMacros);

GetMacroSecurityOptions extension gets the application macro security options.

var options = application.GetMacroSecurityOptions();

GetMacroManager extension gets the Macro manager from the application.

var manager = application.GetMacroManager();

Ribbon Extensions

CreatePanel extension creates a new panel in the default AddIn tab or the specified tab. If the panel exists on the ribbon, the method will return it.

application.CreatePanel("Panel name");
application.CreatePanel("Panel name", "Tab name");

AddPushButton extension adds a PushButton to the ribbon.

panel.AddPushButton<Command>("Button text");
pullDownButton.AddPushButton<Command>("Button text");

AddPullDownButton extension adds a PullDownButton to the ribbon.

panel.AddPullDownButton("Button name", "Button text");

AddSplitButton extension adds a SplitButton to the ribbon.

panel.AddSplitButton("Button name", "Button text");

AddRadioButtonGroup extension adds a RadioButtonGroup to the ribbon.

panel.AddRadioButtonGroup("Button name");

AddComboBox extension adds a ComboBox to the ribbon.

panel.AddComboBox("Button name");

AddTextBox extension adds a TextBox to the ribbon.

panel.AddTextBox("Button name");

SetImage extension adds an image to the RibbonButton.

button.SetImage("/RevitAddIn;component/Resources/Icons/RibbonIcon16.png");
button.SetImage("https://example.com/RibbonIcon16.png");
button.SetImage("C:/Pictures/RibbonIcon16.png");

SetLargeImage extension adds a large image to the RibbonButton.

button.SetLargeImage("/RevitAddIn;component/Resources/Icons/RibbonIcon32.png");
button.SetLargeImage("https://example.com/RibbonIcon32.png");
button.SetLargeImage("C:/Pictures/RibbonIcon32.png");

SetAvailabilityController extension specifies the class that decides the availability of PushButton

pushButton.SetAvailabilityController<CommandController>();

ContextMenu Extensions

ConfigureContextMenu extension registers an action used to configure a Context menu.

application.ConfigureContextMenu(menu =>
{
    menu.AddMenuItem<Command>("Menu title");
    menu.AddMenuItem<Command>("Menu title")
        .SetAvailabilityController<Controller>()
        .SetToolTip("Description");
});

You can also specify your own context menu title. By default, Revit uses the Application name

application.ConfigureContextMenu("Title", menu =>
{
    menu.AddMenuItem<Command>("Menu title");
});

AddMenuItem extension adds a menu item to the Context Menu.

menu.AddMenuItem<Command>("Menu title");

AddSeparator extension adds a separator to the Context Menu.

menu.AddSeparator();

AddSubMenu extension adds a sub menu to the Context Menu.

var subMenu = new ContextMenu();
subMenu.AddMenuItem<Command>("Menu title");
subMenu.AddMenuItem<Command>("Menu title");

menu.AddSubMenu("Sub menu title", subMenu);

SetAvailabilityController extension specifies the class type that decides the availability of menu item.

menuItem.SetAvailabilityController<Controller>()

Document extensions

GetProfileSymbols extension gets the profile Family Symbols of the document.

var symbols = document.GetProfileSymbols(ProfileFamilyUsage.Any, oneCurveLoopOnly: true);

RelinquishOwnership extension gets the profile Family Symbols of the document.

var items = document.RelinquishOwnership(relinquishOptions, transactOptions);

Document managers extensions

GetTemporaryGraphicsManager extension gets a TemporaryGraphicsManager reference of the document.

var manager = document.GetTemporaryGraphicsManager();

GetAnalyticalToPhysicalAssociationManager extension gets a AnalyticalToPhysicalAssociationManager reference of the document.

var manager = document.GetAnalyticalToPhysicalAssociationManager();

GetLightGroupManager extension creates a light group manager object from the given document.

var manager = document.GetLightGroupManager();

Geometry extensions

Distance extension returns distance between two lines. The lines are considered endless.

var line1 = Line.CreateBound(new XYZ(0,0,1), new XYZ(1,1,1));
var line2 = Line.CreateBound(new XYZ(1,2,2), new XYZ(1,2,2));
var distance = line1.Distance(line2);

Contains extension determines whether the specified point is contained within this BoundingBox.

var point = new XYZ(1,1,1);
var isContains = boundingBox.Contains(point);

Contains extension determines whether the specified point is contained within this BoundingBox. Set strict mode if the point needs to be fully on the inside of the source. A point coinciding with the box border will be considered outside.

var point = new XYZ(1,1,1);
var isContains = boundingBox.Contains(point, strict:true);

Contains extension determines whether one BoundingBoxXYZ contains another BoundingBoxXYZ.

var boundingBox2 = new BoundingBoxXYZ();
var isContains = boundingBox1.Contains(boundingBox2);

Contains extension determines whether one BoundingBoxXYZ contains another BoundingBoxXYZ. Set strict mode if the box needs to be fully on the inside of the source. Coincident boxes will be considered outside.

var boundingBox2 = new BoundingBoxXYZ();
var isContains = boundingBox1.Contains(boundingBox2, strict:true);

Overlaps extension determines whether this BoundingBox overlaps with another BoundingBox.

var boundingBox2 = new BoundingBoxXYZ();
var isContains = boundingBox1.Overlaps(boundingBox2);

ComputeCentroid extension computes the geometric center point of the bounding box.

var center = boundingBox.ComputeCentroid();

ComputeVertices extension retrieves the coordinates of the eight vertices that define the bounding box.

var vertices = boundingBox.ComputeVertices();

ComputeVolume extension calculates the volume enclosed by the bounding box.

var volume = boundingBox.ComputeVolume();

ComputeSurfaceArea extension calculates the total surface area of the bounding box.

var area = boundingBox.ComputeSurfaceArea();

SetCoordinateX extension creates an instance of a curve with a new X coordinate.

var newLine = line.SetCoordinateX(1);
var newArc = arc.SetCoordinateX(1);

SetCoordinateY extension creates an instance of a curve with a new Y coordinate.

var newLine = line.SetCoordinateY(1);
var newArc = arc.SetCoordinateY(1);

SetCoordinateZ extension creates an instance of a curve with a new coordinate.

var newLine = line.SetCoordinateZ(1);
var newArc = arc.SetCoordinateZ(1);

Element geometry extensions

JoinGeometry extension creates clean joins between two elements that share a common face.

element1.JoinGeometry(element2);

UnjoinGeometry extension removes a join between two elements.

element1.UnjoinGeometry(element2);

AreElementsJoined extension determines whether two elements are joined.

var areJoined = element1.AreElementsJoined(element2);

GetJoinedElements extension returns all elements joined to given element.

var elements = element1.GetJoinedElements();

SwitchJoinOrder extension reverses the order in which two elements are joined.

element1.SwitchJoinOrder();

IsCuttingElementInJoin extension determines whether the first of two joined elements is cutting the second element.

var isCutting = element1.IsCuttingElementInJoin(element2);

Parameters extensions

AsBool extension provides access to the boolean value within the parameter.

bool value = element.FindParameter("IsClosed").AsBool();

AsColor extension provides access to the Color within the parameter.

Color value = element.FindParameter("Door color").AsColor();

AsElement extension provides access to the Element within the parameter.

Element value = element.FindParameter("Door material").AsElement();
Material value = element.FindParameter("Door material").AsElement<Material>();

Set extension sets the parameter to a new value.

parameter.Set(true);
parameter.Set(new Color(66, 69, 96);

IsBuiltInParameter extension checks whether a Parameter identifies a built-in parameter.

var isBuiltIn = parameter.IsBuiltInParameter();

Document global parameters extensions

FindGlobalParameter extension finds whether a global parameter with the given name exists in the input document.

var parameter = document.FindGlobalParameter(name);

GetAllGlobalParameters extension returns all global parameters available in the given document.

var parameters = document.GetAllGlobalParameters();

GetGlobalParametersOrdered extension returns all global parameters in an ordered array.

var parameters = document.GetGlobalParametersOrdered();

SortGlobalParameters extension sorts global parameters in the desired order.

document.SortGlobalParameters(ParametersOrder.Ascending);

MoveGlobalParameterUpOrder extension moves given global parameter Up in the current order.

var isMoved = document.MoveGlobalParameterUpOrder(parameterId);

MoveGlobalParameterDownOrder extension moves given global parameter Down in the current order.

var isMoved = document.MoveGlobalParameterDownOrder(parameterId);

IsUniqueGlobalParameterName extension tests whether a name is unique among existing global parameters of a given document.

var isUnique = document.IsUniqueGlobalParameterName(name);

IsValidGlobalParameter extension tests whether an ElementId is of a global parameter in the given document.

var isValid = document.IsValidGlobalParameter(parameterId);

AreGlobalParametersAllowed extension tests whether global parameters are allowed in the given document.

var isAllowed = document.AreGlobalParametersAllowed();

FilteredElementCollector extensions

This set of extensions encapsulates all the work of searching for elements in the Revit database.

GetElements a generic method which constructs a new FilteredElementCollector that will search and filter the set of elements in a document. Filter criteria are not applied to the method.

var elements = document.GetElements().WhereElementIsViewIndependent().ToElements();
var elements = document.GetElements(elementIds).WhereElementIsViewIndependent.ToElements();
var elements = document.GetElements(viewId).ToElements();

The remaining methods contain a ready implementation of the collector, with filters applied:

var elements = document.GetInstances();
var elements = document.GetInstances(new ElementParameterFilter());
var elements = document.GetInstances([elementParameterFilter, logicalFilter]);

var elements = document.GetInstances(BuiltInCategory.OST_Walls);
var elements = document.GetInstances(BuiltInCategory.OST_Walls, new ElementParameterFilter());
var elements = document.GetInstances(BuiltInCategory.OST_Walls, [elementParameterFilter, logicalFilter]);    

var elements = document.EnumerateInstances();
var elements = document.EnumerateInstances(new ElementParameterFilter());
var elements = document.EnumerateInstances([elementParameterFilter, logicalFilter]);

var elements = document.EnumerateInstances(BuiltInCategory.OST_Walls);
var elements = document.EnumerateInstances(BuiltInCategory.OST_Walls, new ElementParameterFilter());
var elements = document.EnumerateInstances(BuiltInCategory.OST_Walls, [elementParameterFilter, logicalFilter]);   

var elements = document.EnumerateInstances<Wall>();
var elements = document.EnumerateInstances<Wall>(new ElementParameterFilter());
var elements = document.EnumerateInstances<Wall>(new [elementParameterFilter, logicalFilter]);

var elements = document.EnumerateInstances<Wall>(BuiltInCategory.OST_Walls);
var elements = document.EnumerateInstances<Wall>(BuiltInCategory.OST_Walls, new ElementParameterFilter());
var elements = document.EnumerateInstances<Wall>(BuiltInCategory.OST_Walls, [elementParameterFilter, logicalFilter]);   

The same overloads exist for InstanceIds, Type, TypeIds:

var types = document.GetTypes();
var types = document.GetTypeIds();
var types = document.GetInstanceIds();
var types = document.EnumerateTypes();
var types = document.EnumerateTypeIds();
var types = document.EnumerateInstanceIds();

Remarks: Get methods are faster than Enumerate due to RevitApi internal optimizations. However, enumeration allows for more flexibility in finding elements.

Don't try to call GetInstances().Select().Tolist() instead of EnumerateInstances().Select().Tolist(), you will degrade performance.

ForgeTypeId extensions

IsSpec extension Checks whether a ForgeTypeId identifies a spec.

var isSpec = forgeId.IsSpec();

IsBuiltInGroup extension checks whether a ForgeTypeId identifies a built-in parameter group.

var isGroup = forgeId.IsBuiltInGroup();

IsBuiltInParameter extension checks whether a ForgeTypeId identifies a built-in parameter.

var isBuiltInParameter = forgeId.IsBuiltInParameter();

IsSymbol extension checks whether a ForgeTypeId identifies a symbol.

var isSymbol = symbolTypeId.IsSymbol();

IsUnit extension checks whether a ForgeTypeId identifies a unit.

var isUnit = unitTypeId.IsUnit();

IsValidDataType extension returns true if the given ForgeTypeId identifies a valid parameter data type.

var isValid = forgeId.IsValidDataType();

IsValidUnit extension checks whether a unit is valid for a given measurable spec.

var isValid = specTypeId.IsValidUnit(unitTypeId);

IsMeasurableSpec extension checks whether a ForgeTypeId identifies a spec associated with units of measurement.

var isMeasurable = specTypeId.IsMeasurableSpec(unitTypeId);

GetBuiltInParameter extension gets the BuiltInParameter value corresponding to built-in parameter identified by the given ForgeTypeId.

var builtInParameter = forgeId.GetBuiltInParameter();

GetParameterTypeId extension gets the ForgeTypeId identifying the built-in parameter corresponding to the given BuiltInParameter value.

var forgeId = builtInParameter.GetParameterTypeId();

GetDiscipline extension gets the discipline for a given measurable spec.

var disciplineId = specTypeId.GetDiscipline();

GetValidUnits extension gets the identifiers of all valid units for a given measurable spec.

var unitIds = specTypeId.GetValidUnits();

GetTypeCatalogStringForSpec extension gets the string used in type catalogs to identify a given measurable spec.

var catalog = specTypeId.GetTypeCatalogStringForSpec();

GetTypeCatalogStringForUnit extension gets the string used in type catalogs to identify a given unit.

var catalog = unitTypeId.GetTypeCatalogStringForUnit();

DownloadCompanyName extension downloads the name of the given parameter's owning account and records it in the given document. If the owning account's name is already recorded in the given document, this method returns the name without downloading it again.

var name = forgeId.DownloadCompanyName(document);

DownloadParameterOptions extension retrieves settings associated with the given parameter from the Parameters Service.

var options = forgeId.DownloadParameterOptions(document);

DownloadParameter extension creates a shared parameter element in the given document according to a parameter definition downloaded from the Parameters Service.

var sharedParameter = forgeId.DownloadParameter(document, options);

Unit Extensions

FromMillimeters extension converts millimeters to internal Revit number format (feet).

var value = 69d.FromMillimeters(); // 0.226

ToMillimeters extension converts a Revit internal format value (feet) to millimeters.

var value = 69d.ToMillimeters(); // 21031

FromMeters extension converts meters to internal Revit number format (feet).

var value = 69d.FromMeters(); // 226.377

ToMeters extension converts a Revit internal format value (feet) to meters.

var value = 69d.ToMeters(); // 21.031

FromInches extension converts inches to internal Revit number format (feet).

var value = 69d.FromInches(); // 5.750

ToInches extension converts a Revit internal format value (feet) to inches.

var value = 69d.ToInches(); // 827.999

FromDegrees extension converts degrees to internal Revit number format (radians).

var value = 69d.FromDegrees(); // 1.204

ToDegrees extension converts a Revit internal format value (radians) to degrees.

var value = 69d.ToDegrees(); // 3953

FromUnit(UnitTypeId) extension converts the specified unit type to internal Revit number format.

var value = 69d.FromUnit(UnitTypeId.Celsius); // 342.15

ToUnit(UnitTypeId) extension converts a Revit internal format value to the specified unit type.

var value = 69d.ToUnit(UnitTypeId.Celsius); // -204.15

FormatUnit extension formats a number with units into a string.

var value = document.GetUnits().FormatUnit(SpecTypeId.Length, 69, false); // 21031
var value = document.GetUnits().FormatUnit(SpecTypeId.Length, 69, false, new FormatValueOptions {AppendUnitSymbol = true}); // 21031 mm

Label Extensions

ToLabel extension convert Enum to user-visible name.

var label = BuiltInCategory.OST_Walls.ToLabel(); // "Walls"
var label = BuiltInParameter.WALL_TOP_OFFSET.ToLabel(); // "Top Offset"
var label = BuiltInParameter.WALL_TOP_OFFSET.ToLabel(LanguageType.Russian); // "Смещение сверху"
var label = BuiltInParameterGroup.PG_LENGTH.ToLabel(); // "Length"
var label = DisplayUnitType.DUT_KILOWATTS.ToLabel(); // "Kilowatts"

ToLabel extension convert ForgeTypeId to user-visible name.

var label = ParameterType.Length.ToLabel(); // "Length"
var label = DisciplineTypeId.Hvac.ToLabel(); // "HVAC"
var label = GroupTypeId.Geometry.ToLabel(); // "Dimensions"
var label = ParameterTypeId.DoorCost.ToLabel(); // "Cost"
var label = SpecTypeId.SheetLength.ToLabel(); // "Sheet Length"
var label = SymbolTypeId.Hour.ToLabel(); // "h"
var label = UnitTypeId.Hertz.ToLabel(); // "Hertz"

ToDisciplineLabel extension convert ForgeTypeId to user-visible name a discipline.

var label = DisciplineTypeId.Hvac.ToDisciplineLabel(); // "HVAC"

ToGroupLabel extension converts ForgeTypeId to user-visible name for a built-in parameter group.

var label = GroupTypeId.Geometry.ToGroupLabel(); // "Dimensions"

ToParameterLabel extension converts ForgeTypeId to user-visible name for a built-in parameter.

var label = ParameterTypeId.DoorCost.ToParameterLabel(); // "Cost"

ToSpecLabel extension converts ForgeTypeId to user-visible name for a spec.

var label = SpecTypeId.SheetLength.ToSpecLabel(); // "Sheet Length"

ToSymbolLabel extension convert ForgeTypeId to user-visible name for a symbol.

var label = SymbolTypeId.Hour.ToSymbolLabel(); // "h"

ToUnitLabel extension converts ForgeTypeId to user-visible name for a unit.

var label = UnitTypeId.Hertz.ToUnitLabel(); // "Hertz"

Color extensions

ToHex extension returns a hexadecimal representation of a color.

var hex = color.ToHex();

ToHexInteger extension returns a hexadecimal integer representation of a color.

var hexInteger = color.ToHexInteger();

ToRgb extension returns an RGB representation of a color.

var rgb = color.ToRgb();

ToHsl extension returns a HSL representation of a color.

var hsl = color.ToHsl();

ToHsv extension returns a HSV representation of a color.

var hsv = color.ToHsv();

ToCmyk extension returns a CMYK representation of a color.

var cmyk = color.ToCmyk();

ToHsb extension returns a HSB representation of a color.

var hsb = color.ToHsb();

ToHsi extension returns a HSI representation of a color.

var hsi = color.ToHsi();

ToHwb extension returns a HWB representation of a color.

var hwb = color.ToHwb();

ToNCol extension returns a NCol representation of a color.

var ncol = color.ToNCol();

ToCielab extension returns a Cielab representation of a color.

var cielab = color.ToCielab();

ToCieXyz extension returns a CieXyz representation of a color.

var xyz = color.ToCieXyz();

ToFloat extension returns a Float representation of a color.

var float = color.ToFloat();

ToDecimal extension returns a Decimal representation of a color.

var decimal = color.ToDecimal();

Family extensions

CanConvertToFaceHostBased extension indicates whether the family can be converted to face host based.

var canConvert = family.CanConvertToFaceHostBased();

ConvertToFaceHostBased extension converts a family to be face host based.

family.ConvertToFaceHostBased();

Host class extensions

GetBottomFaces extension returns the bottom faces for the host object.

floor.Cast<HostObject>().GetBottomFaces();

GetTopFaces extension returns the top faces for the host object.

floor.Cast<HostObject>().GetTopFaces();

GetSideFaces extension returns the major side faces for the host object.

wall.Cast<HostObject>().GetSideFaces(ShellLayerType.Interior);

Plumbing extensions

ConnectPipePlaceholdersAtElbow extension connects placeholders that looks like elbow connection.

var isConnected = connector1.ConnectPipePlaceholdersAtElbow(connector2);

ConnectPipePlaceholdersAtTee extension connects three placeholders that looks like Tee connection.

var isConnected = connector1.ConnectPipePlaceholdersAtTee(connector2, connector3);

ConnectPipePlaceholdersAtCross extension connects placeholders that looks like Cross connection.

var isConnected = connector1.ConnectPipePlaceholdersAtCross(connector2, connector3, connector4);

PlaceCapOnOpenEnds extension places caps on the open connectors of the pipe curve.

pipe.PlaceCapOnOpenEnds();
pipe.PlaceCapOnOpenEnds(typeId);

HasOpenConnector extension checks if there is open piping connector for the given pipe curve.

var hasOpenConnector = pipe.HasOpenConnector();

BreakCurve extension breaks the pipe curve into two parts at the given position.

var pipeCurve = pipe.BreakCurve(new XYZ(1, 1, 1));

Solid extensions

Clone extension creates a new Solid, which is a copy of the input Solid.

var clone = solid.Clone();

CreateTransformed extension creates a new Solid which is the transformation of the input Solid.

var transformed = solid.CreateTransformed(Transform.CreateRotationAtPoint());
var transformed = solid.CreateTransformed(Transform.CreateReflection());

SplitVolumes extension splits a solid geometry into several solids.

var solids = solid.SplitVolumes();

IsValidForTessellation extension tests if the input solid or shell is valid for tessellation.

var isValid = solid.IsValidForTessellation();

TessellateSolidOrShell extension facets (i.e., triangulates) a solid or an open shell.

var tesselation = solid.TessellateSolidOrShell();

FindAllEdgeEndPointsAtVertex extension finds all EdgeEndPoints at a vertex identified by the input EdgeEndPoint.

var point = edgeEndPoint.FindAllEdgeEndPointsAtVertex();

Element solid cut extensions

GetCuttingSolids extension gets all the solids which cut the input element.

var solids = element.GetCuttingSolids();

GetSolidsBeingCut extension gets all the solids which are cut by the input element.

var solids = element.GetSolidsBeingCut();

IsAllowedForSolidCut extension validates that the element is eligible for a solid-solid cut.

var isAllowed = element.IsAllowedForSolidCut();

IsElementFromAppropriateContext extension validates that the element is from an appropriate document.

var fromContext = element.IsElementFromAppropriateContext();

CanElementCutElement extension verifies if the cutting element can add a solid cut to the target element.

var canCut = element1.CanElementCutElement(element2, out var reason);

CutExistsBetweenElements extension checks that if there is a solid-solid cut between two elements.

var isCutExists = element1.CutExistsBetweenElements(element2, out var isFirstCuts);

AddCutBetweenSolids extension adds a solid-solid cut for the two elements.

element1.AddCutBetweenSolids(element2);

RemoveCutBetweenSolids extension removes the solid-solid cut between the two elements if it exists.

element1.RemoveCutBetweenSolids(element2);

SplitFacesOfCuttingSolid extension removes the solid-solid cut between the two elements if it exists.

element1.SplitFacesOfCuttingSolid(element2);

View extensions

GetTransformFromViewToView extension returns a transformation that is applied to elements when copying from one view to another view.

var transform = view1.GetTransformFromViewToView(view2);

View managers extensions

CreateSpatialFieldManager extension creates SpatialField for the given view.

var manager = view.CreateSpatialFieldManager(numberOfMeasurements: 69);

GetSpatialFieldManager extension retrieves SpatialField manager for the given view.

var manager = view.GetSpatialFieldManager();

Part extensions

GetSplittingElements extension identifies the elements (reference planes, levels, grids) that were used to create the part.

var elements = part.GetSplittingElements();

GetSplittingCurves extension identifies the curves used to create the part.

var curves = part.GetSplittingCurves();

GetSplittingCurves extension identifies the curves used to create the part and the plane in which they reside.

var curves = part.GetSplittingCurves(out var plane);

GetChainLengthToOriginal extension calculates the length of the longest chain of divisions/merges to reach to an original non-Part element that is the source of the tested part.

var length = part.GetChainLengthToOriginal();

GetMergedParts extension retrieves the element ids of the source elements of a merged part.

var parts = part.GetMergedParts();

IsPartDerivedFromLink extension check if the Part derived from link geometry.

var isDerived = part.IsPartDerivedFromLink();

GetPartMakerMethodToDivideVolumeFw extension obtains the object allowing access to the divided volume.

var method = partMaker.GetPartMakerMethodToDivideVolumeFw();

Element part extensions

IsElementValidForCreateParts extension identifies if the given element can be used to create parts.

var isValid = element.IsElementValidForCreateParts();

HasAssociatedParts extension checks if an element has associated parts.

var hasParts = element.HasAssociatedParts();

GetAssociatedParts returns all Parts that are associated with the given element.

var parts = element.GetAssociatedParts(includePartsWithAssociatedParts: true, includeAllChildren: true);

GetAssociatedPartMaker returns all Parts that are associated with the given element.

var partMaker = element.GetAssociatedPartMaker();

ElementId parts extensions

CreateParts extension creates a new set of parts out of the original elements.

elementIds.CreateParts(document);
linkElementIds.CreateParts(document);

DivideParts extension creates divided parts out of parts.

elementIds.DivideParts(intersectingReferenceIds, document, curveArray, sketchPlaneId);

FindMergeableClusters extension segregates a set of elements into subsets which are valid for merge.

var clusters = elementIds.FindMergeableClusters(document);

CreateMergedPart extension creates a single merged part which represents the Parts specified by partsToMerge.

var parkMaker = elementIds.CreateMergedPart(document);

ArePartsValidForMerge extension identifies whether Part elements may be merged.

var isValid = elementIds.ArePartsValidForMerge(document);

ArePartsValidForDivide extension identifies if provided members are valid for dividing parts.

var isValid = elementIds.ArePartsValidForDivide(document);

AreElementsValidForCreateParts extension identifies if the given elements can be used to create parts.

var isValid = elementIds.AreElementsValidForCreateParts(document);

IsValidForCreateParts extension identifies if the given element can be used to create parts.

var isValid = linkedElementId.IsValidForCreateParts(document);

HasAssociatedParts extension checks if an element has associated parts.

var hasParts = linkedElementId.HasAssociatedParts(document);

GetAssociatedParts extension returns all Parts that are associated with the given element

var parts = linkedElementId.GetAssociatedParts(document, includePartsWithAssociatedParts: true, includeAllChildren: true);

GetAssociatedPartMaker extension returns all Parts that are associated with the given element

var partMaker = linkedElementId.GetAssociatedPartMaker(document);

Imperial Extensions

ToFraction extension converts a number to Imperial fractional format.

var imperial = 1d.ToFraction(); // 1'-0"
var imperial = 0.0123d.ToFraction(); // 0 5/32"
var imperial = 15.125d.ToFraction(); // 15'-1 1/2"
var imperial = -25.222d.ToFraction(); // 25'-2 21/32"
var imperial = -25.222d.ToFraction(4); // 25'-2 3/4"

FromFraction extension converts the textual representation of the Imperial system number to number.

var metric = "".FromFraction(); // 0
var metric = "1 17/64\"".FromFraction(); // 0.105
var metric = "1'1.75".FromFraction(); // 1.145
var metric = "-69'-69\"".FromFraction(); // -74.75

TryFromFraction extension converts the textual representation of the Imperial system number to number.

var result = "-2'-1 15/64\"".TryFromFraction(out var value); // true
var result = "-".TryFromFraction(out var value); // true
var result = ".".TryFromFraction(out var value); // false
var result = "value".TryFromFraction(out var value); // false
var result = null.TryFromFraction(out var value); // false

System Extensions

Cast<T> extension casts an object to the specified type. Method chain is supported

var width = element.Cast<Wall>().Width;
var location = element.Location.Cast<LocationCurve>().Curve;
var faces = element.Cast<HostObject>().GetSideFaces();

Round extension rounds the value to the specified precision or 1e-9 precision specified in Revit Api.

var rounded = 6.56170000000000000000000001.Round(); // 6.5617
var rounded = 6.56170000000000000000000001.Round(0); // 7

IsAlmostEqual extension compares two numbers within specified precision or 1e-9 precision specified in Revit Api.

var isRqual = 6.56170000000000000000000001.IsAlmostEqual(6.5617); // true
var isEqual = 6.56170000000000000000000001.IsAlmostEqual(6.6, 1e-1); // true

IsNullOrEmpty extension indicates whether the specified string is null or an empty string.

var isEmpty = "".IsNullOrEmpty(); // true
var isEmpty = null.IsNullOrEmpty(); // true

IsNullOrWhiteSpace extension indicates whether a specified string is null, empty, or consists only of white-space characters.

var isEmpty = " ".IsNullOrWhiteSpace(); // true
var isEmpty = null.IsNullOrWhiteSpace(); // true

AppendPath extension combines paths.

var path = "C:\Folder".AppendPath("AddIn"); // C:/Folder/AddIn
var path = "C:\Folder".AppendPath("AddIn", "file.txt"); // C:/Folder/AddIn/file.txt

Contains indicating whether a specified substring occurs within this string with StringComparison support.

Available only for .NET Framework builds. .NET Core has a built-in support for this method

var isContains = "Revit extensions".Contains("Revit", StringComparison.OrdinalIgnoreCase); // true
var isContains = "Revit extensions".Contains("revit", StringComparison.OrdinalIgnoreCase); // true
var isContains = "Revit extensions".Contains("REVIT", StringComparison.OrdinalIgnoreCase); // true
var isContains = "Revit extensions".Contains("invalid", StringComparison.OrdinalIgnoreCase); // false

Show extension opens a window and returns without waiting for the newly opened window to close. Sets the owner of a child window. Applicable for modeless windows to be attached to Revit.

new RevitAddinView.Show(uiApplication.MainWindowHandle)