Revit 二次开发之“参数”

最新推荐文章于 2022-08-19 11:26:49 发布

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最新推荐文章于 2022-08-19 11:26:49 发布

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本文介绍如何使用Revit API获取与修改建筑元素参数，包括遍历所有参数及通过特定标识获取参数值，并演示了如何修改参数。

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start

//遍历全部参数
[Transaction(TransactionMode.Manual)]
[Regeneration(RegenerationOption.Manual)]
public class GetAllParameterValues : IExternalCommand
{
    public Result Execute(ExternalCommandData commandData, ref string messages, ElementSet elements)
    {
        UIApplication uiApp = commandData.Application;
        Autodesk.Revit.ApplicationServices.Application app = uiApp.Application;
        Document doc = uiApp.ActiveUIDocument.Document;

        Selection sel = uiApp.ActiveUIDocument.Selection;
        sel.StatusbarTip = "Please select an element";
        sel.PickOne();
        Element elemPick = null;

        foreach (Element elem in sel.Elements)
        {
            elemPick = elem;
            break;
        }

        string strParamInfo = null;
        foreach (Parameter param in elemPick.Parameters)
        {
            if (param.AsValueString() != null)
                strParamInfo += param.Definition.Name + " value is:" + param.AsValueString() + "\n";
            else
                strParamInfo += param.Definition.Name + " value is:" + param.AsString() + "\n";
        }

        MessageBox.Show(strParamInfo);

        return Result.Succeeded;
    }
}

//获得指定参数
[Transaction(TransactionMode.Automatic)]
[Regeneration(RegenerationOption.Automatic)]//修改需要用此模式
public class GetSpecificParameterValue : IExternalCommand
{
    public Result Execute(ExternalCommandData commandData, ref string messages, ElementSet elements)
    {
        UIApplication uiApp = commandData.Application;
        Autodesk.Revit.ApplicationServices.Application app = uiApp.Application;
        Document doc = uiApp.ActiveUIDocument.Document;

        Selection sel = uiApp.ActiveUIDocument.Selection;
        sel.StatusbarTip = "Please select an window";
        sel.PickOne();
        Element elemPick = null;

        foreach (Element elem in sel.Elements)
        {
            if (elem is FamilyInstance)
            {
                elemPick = elem;
                break;
            }
        }

        if (elemPick != null)
        {
            string strParamInfo = null;
            //用BuiltInParameter来访问参数，与国家语言无关
            Parameter param = elemPick.get_Parameter(BuiltInParameter.INSTANCE_SILL_HEIGHT_PARAM);
            strParamInfo += param.Definition.Name + " value is:" + param.AsValueString() + "\n";

            //修改参数的值
            param.Set(3.6);

            //使用名称来访问
            param = elemPick.get_Parameter("底高度");
            strParamInfo += param.Definition.Name + " value is :" + param.AsValueString() + "\n";
            MessageBox.Show(strParamInfo);
        }

        return Result.Succeeded;
    }
}

end