html 进度条roll,Revit二次开发——利用Dispatcher类添加进度条

当程序运行时间很长，然后避免程序假死，比较好的办法是增加一个进度条，如果当前只有你的这一个功能在跑，用Dispatcher类是一个简单的好选择。

这里用wpf的窗口来实现。

public partial class ProgressBarView : Window

{

ExternalCommandData m_commandData=null;

StrightRigidFrameBridgeModel m_model =null;

Element m_element = null;

ProgressModel m_ProgressModel;

bool applicationCancle =false;

public ProgressBarView(ExternalCommandData commandData, StrightRigidFrameBridgeModel model,Element elem)

{

InitializeComponent();

m_commandData = commandData;

m_model = model;

m_element = elem;

ProgressModel pModel = new ProgressModel();

m_ProgressModel = pModel;

this.DataContext = pModel;

applicationCancle = false;

}

public void StrightRigidFrameBridgeCreater(ExternalCommandData commandData, StrightRigidFrameBridgeModel model, Element elem)

{

using (TransactionGroup transGroup = new TransactionGroup(commandData.Application.ActiveUIDocument.Document, "Creat Rebar"))

{

transGroup.Start("Creat Stright Rigid Frame Bridge");

ICollection elementIds = new List() { elem.Id };

for (int i = 0; i < (model.ListBoxGriderModel.Count - 1); i++)

{

m_ProgressModel.ProgressInfomation = "剩下" + (model.ListBoxGriderModel.Count - 1 - i-1).ToString() + "个节段";

m_ProgressModel.ProgressValue= double.Parse(i.ToString())/ (model.ListBoxGriderModel.Count - 2) * 100;

System.Windows.Forms.Application.DoEvents();

BoxGriderModel boxGriderModelI = model.ListBoxGriderModel[i];

BoxGriderModel boxGriderModelJ = model.ListBoxGriderModel[i + 1];

#region 将表格的族参数赋予给对应的族参数

#endregion

Transaction transaction1 = new Transaction(commandData.Application.ActiveUIDocument.Document);

transaction1.Start("改变族参数");

elem.LookupParameter("iH").Set(MillimetersToUnits(boxGriderModelI.XLG)); //变截面箱梁i截面的高度

elem.LookupParameter("iHI5").Set(MillimetersToUnits(boxGriderModelI.DBH)); //变截面箱梁i截面底板的高度

elem.LookupParameter("iT").Set(MillimetersToUnits(boxGriderModelI.FBH)); //变截面箱梁i截面腹板的宽度

elem.LookupParameter("iHI1").Set(MillimetersToUnits(boxGriderModelI.TBH)); //变截面箱梁i截面顶板的高度

elem.LookupParameter("jH").Set(MillimetersToUnits(boxGriderModelJ.XLG)); //变截面箱梁i截面的高度

elem.LookupParameter("jHI5").Set(MillimetersToUnits(boxGriderModelJ.DBH)); //变截面箱梁i截面底板的高度

elem.LookupParameter("jT").Set(MillimetersToUnits(boxGriderModelJ.FBH)); //变截面箱梁i截面腹板的宽度

elem.LookupParameter("jHI1").Set(MillimetersToUnits(boxGriderModelJ.TBH)); //变截面箱梁i截面顶板的高度

elem.LookupParameter("BeamLength").Set(MillimetersToUnits(boxGriderModelJ.JDCD)); //变截面箱梁节段长度

elem.LookupParameter("detZ").Set(MillimetersToUnits(boxGriderModelI.SJGC) - MillimetersToUnits(boxGriderModelJ.SJGC)); //变截面箱梁两个z截面的高差

elem.LookupParameter("detY").Set(MillimetersToUnits(boxGriderModelI.Y_Coordinate) - MillimetersToUnits(boxGriderModelJ.Y_Coordinate)); //变截面箱梁两个z截面的高差

transaction1.Commit();

#region 将改变参数后的族放到相应位置

Transaction transaction2 = new Transaction(commandData.Application.ActiveUIDocument.Document);

transaction2.Start("将族复制到相应位置");

XYZ point = new XYZ(MillimetersToUnits(boxGriderModelI.X_Coordinate), MillimetersToUnits(boxGriderModelI.Y_Coordinate), MillimetersToUnits(boxGriderModelI.SJGC));

LocationPoint familyInstancePoint = elem.Location as LocationPoint;

XYZ tanslationVector = point.Subtract(familyInstancePoint.Point);

ElementTransformUtils.CopyElements(commandData.Application.ActiveUIDocument.Document, elementIds, tanslationVector);

transaction2.Commit();

#endregion

if (applicationCancle == true)

{

break;

}

}

if(applicationCancle==true)

{

transGroup.RollBack();

this.Close();

}

else

{

transGroup.Assimilate();

}

}

}

private double MillimetersToUnits(double value)

{

return UnitUtils.ConvertToInternalUnits(value, DisplayUnitType.DUT_MILLIMETERS);

}

private void window_Loaded(object sender, RoutedEventArgs e)

{

Thread thread = new Thread(excute);

thread.Start();

}

private void excute()

{

this.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Normal, (ThreadStart)delegate () { StrightRigidFrameBridgeCreater(m_commandData, m_model, m_element); });

}

private void cancelAsyncButton_Click(object sender, RoutedEventArgs e)

{

this.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Normal, (ThreadStart)delegate () { applicationCancle = true;});

}

}

}

以上代码通过System.Windows.Forms.Application.DoEvents()来不断让程序在线程和主程序中来回切换，程序边计算一部分，然后进度条更新进度。

使用Dispartcher类注意用Try catch，并及时关掉线程。

注意上述代码会产生点问题，你会发现在程序跑的时候，构件是一个个生成的，这样给人感觉很奇怪。你需要将上述代码优化一下，将整个生成过程放在一个transaction里面。特别是有闲置程序在跑的时候，这种做法更安全，因为你在doevent的时候，很可能会让闲置程序也跟着跑，这明显会导致错误。因为老代码不见了，我懒得改，就用几句话代替。

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