•  

Create Method

Load Nature Create Method

Creates a new LoadNature.

Namespace: Autodesk.Revit.DB.Structure
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
Syntax 
public static LoadNature Create(
	Document document,
	string name
)

Parameters

document Document
The Document to which new load nature element will be added.
name String
The name of the load nature.

Return Value

LoadNature
The newly created load nature element if successful, otherwise.
Exceptions
Exception Condition
ArgumentException The given name is not unique
ArgumentNullException A non-optional argument was null
Example 
#region Autodesk.Revit.DB.Structure.LoadCase.Create(Autodesk.Revit.DB.Document,string,Autodesk.Revit.DB.ElementId,Autodesk.Revit.DB.Structure.LoadCaseCategory)
#region Autodesk.Revit.DB.Structure.LoadUsage.Create(Autodesk.Revit.DB.Document,string)
#region Autodesk.Revit.DB.Structure.LoadComponent.#ctor(Autodesk.Revit.DB.ElementId,System.Double)
#region Autodesk.Revit.DB.Structure.LoadCombination.SetComponents(System.Collections.Generic.IList{Autodesk.Revit.DB.Structure.LoadComponent})
#region Autodesk.Revit.DB.Structure.LoadCombination.SetUsageIds(System.Collections.Generic.IList{Autodesk.Revit.DB.ElementId})
LoadCombination CreateLoadCombinationLoadCaseLoadUsageLoadNatureAndLoadComponent(Document document)
{
    // Create a new load combination
    LoadCombination loadCombination = LoadCombination.Create(document, "DL1 + RAIN1", LoadCombinationType.Combination, LoadCombinationState.Ultimate);
    if (loadCombination == null)
       throw new Exception("Create new load combination failed.");

    // Get all existing LoadCase
    FilteredElementCollector collector = new FilteredElementCollector(document);
    ICollection<Element> collection = collector.OfClass(typeof(LoadCase)).ToElements();

    // Find LoadCase "DL1"
    LoadCase case1 = null;
    foreach (Element e in collection)
    {
       LoadCase loadCase = e as LoadCase;
       if (loadCase.Name == "DL1")
       {
          case1 = loadCase;
          break;
       }
    }

    // Get all existing LoadNature
    collector = new FilteredElementCollector(document);
    collection = collector.OfClass(typeof(LoadNature)).ToElements();

    // Find LoadNature "Dead"
    LoadNature nature1 = null;
    foreach (Element e in collection)
    {
       LoadNature loadNature = e as LoadNature;
       if (loadNature.Name == "Dead")
       {
          nature1 = loadNature;
          break;
       }
    }

    // Create LoadNature "Dead" if not exist
    if (nature1 == null)
       nature1 = LoadNature.Create(document, "Dead");

    // Create LoadCase "DL1" if not exist
    if (case1 == null)
       case1 = LoadCase.Create(document, "DL1", nature1.Id, LoadCaseCategory.Dead);

    // Create LoadNature "Rain"
    LoadNature nature2 = LoadNature.Create(document, "Rain");
    if (nature2 == null)
       throw new Exception("Create new load nature failed.");

    // Create LoadCase "RAIN1"
    LoadCase case2 = LoadCase.Create(document, "RAIN1", nature2.Id, LoadCaseCategory.Snow);
    if (case1 == null || case2 == null)
       throw new Exception("Create new load case failed.");

    // Create LoadComponents - they consist of LoadCases or nested LoadCombination and Factors
    List<LoadComponent> components = new List<LoadComponent>();
    components.Add(new LoadComponent(case1.Id, 2.0));
    components.Add(new LoadComponent(case2.Id, 1.5));

    // Add components to combination
    loadCombination.SetComponents(components);

    // Create LoadUsages
    LoadUsage usage1 = LoadUsage.Create(document, "Frequent");
    LoadUsage usage2 = LoadUsage.Create(document, "Rare");

    if (usage1 == null || usage2 == null)
       throw new Exception("Create new load usage failed.");

    // Add load usages to combination
    loadCombination.SetUsageIds(new List<ElementId>() {usage1.Id, usage2.Id});

    // Give the user some information
    TaskDialog.Show("Revit", string.Format("Load Combination ID='{0}' created successfully.", loadCombination.Id.ToString()));

    return loadCombination;
}
#endregion
#endregion
#endregion
#endregion
#endregion
See Also