Revit二次开发错误提示集锦

根据异常提示，快速准确判断错误原因，找到错误位置，是开发的基本功。

一、事务(待定)
错误提示：
Autodesk.Revit.Exceptions.InvalidOperationException:A sub-transaction can only be active inside an open Transaction.
错误原因：
为了方便使用Add-In-Manager调试，把命令统一写成如下格式：

[Transaction(TransactionMode.Manual)]
[Regeneration(RegenerationOption.Manual)]
public class HelloWorld : IExternalCommand
{
    public Result Execute(ExternalCommandData commandData, ref string messages, ElementSet elements)
    {
        MessageBox.Show("Hello World");
        return Result.Succeeded;
    }
}

但是在创建Revit对象比如Pipe的时候，这样的属性就会提示上面的错误，必须这样限制，使用手写Add-In文件。

[Transaction(TransactionMode.Automatic)]
[Regeneration(RegenerationOption.Manual)]
[Journaling(JournalingMode.NoCommandData)]
public class NewPipeCommand : IExternalCommand
{
    public Result Execute(ExternalCommandData commandData, ref string messages, ElementSet elements)
    {
        UIApplication uiApp = commandData.Application;
        Document doc = uiApp.ActiveUIDocument.Document;
        CreateNewPipe(doc);
        return Result.Succeeded;
    }
    public Pipe CreateNewPipe(Document document)
    {
        FilteredElementCollector collector = new FilteredElementCollector(document);
        collector.OfClass(typeof(PipeType));
        PipeType pipeType = collector.FirstElement() as PipeType;

        Pipe pipe = null;
        if (null != pipeType)
        {
            //create pipe between 2 points
            XYZ p1 = new XYZ(0, 0, 0);
            XYZ p2 = new XYZ(10, 0, 0);
            pipe = document.Create.NewPipe(p1, p2, pipeType);
        }
        return pipe;
    }
}

NewPipe.addin

<?xml version="1.0" encoding="utf-8"?>
<RevitAddIns>
  <AddIn Type="Command">
    <Assembly>F:\RevitCodes\RevitCodes\bin\Debug\RevitCodes.dll</Assembly>
    <ClientId>738dfa84-e739-48c9-892c-4a397f08b49f</ClientId>
    <FullClassName>RevitCodes.NewPipeCommand</FullClassName>
    <Text>NewPipe</Text>
    <Description>""</Description>
    <VisibilityMode>AlwaysVisible</VisibilityMode>
  </AddIn>
</RevitAddIns>

这样便可以正常运行，创建Pipe
Automatic自动
Manual手动