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Checking to see if definition exists in Revit API

Running into an issue where I can't figure out how to tell this to check if the definition or shared parameter exists before adding. I've tried combinations of if else statements as well as coalescing. There is still a lot that I am learning so any help would be greatly appreciated. ` public Autodesk.Revit.UI.Result Execute(
ExternalCommandData commandData, ref string message, Autodesk.Revit.DB.ElementSet elements)
{
Transaction transaction = new Transaction(commandData.Application.ActiveUIDocument.Document, "External Tool");
try
{
transaction.Start();
//Create a clear file as parameter file.
String path = Assembly.GetExecutingAssembly().Location;
int index = path.LastIndexOf("\\");
String newPath = path.Substring(0, index);
newPath += "\\TPMechanicalRevitParameters.txt";
if (File.Exists(newPath))
{
File.Delete(newPath);
}
FileStream fs = File.Create(newPath);
fs.Close();
//cache application handle
Application revitApp = commandData.Application.Application;
//prepare shared parameter file
commandData.Application.Application.SharedParametersFilename = newPath;
//Open shared parameter file
DefinitionFile parafile = revitApp.OpenSharedParameterFile();
//get Fabricaation Pipe category
Category TpCat = commandData.Application.ActiveUIDocument.Document.Settings.Categories.get_Item(BuiltInCategory.OST_FabricationPipework);
CategorySet categories = revitApp.Create.NewCategorySet();
categories.Insert(TpCat);
InstanceBinding binding = revitApp.Create.NewInstanceBinding(categories);
//Create a group
DefinitionGroup apiGroup = parafile.Groups.Create("TpFabricationPipe");
//Create a visible "VisibleParam" of text type.
ExternalDefinitionCreationOptions ExternalDefinitionCreationOptions1 = new ExternalDefinitionCreationOptions("FullFabricationServiceName", ParameterType.Text);
Definition visibleParamDef = apiGroup.Definitions.Create
(ExternalDefinitionCreationOptions1);
BindingMap bindingMap = commandData.Application.ActiveUIDocument.Document.ParameterBindings;
bindingMap.Insert(visibleParamDef, binding);
//Create a invisible "InvisibleParam" of text type.
ExternalDefinitionCreationOptions ExternalDefinitionCreationOptions2 = new ExternalDefinitionCreationOptions("InvisibleParam", ParameterType.Text);
Definition invisibleParamDef = apiGroup.Definitions.Create
(ExternalDefinitionCreationOptions2);
bindingMap.Insert(invisibleParamDef, binding);
}
catch (Exception e)
{
transaction.RollBack();
message = e.ToString();
return Autodesk.Revit.UI.Result.Cancelled;
}
finally
{
transaction.Commit();
}
return Autodesk.Revit.UI.Result.Succeeded;
}`

Think I've found a solution. I just changed it to see if the file exists instead of the definition & it worked. If there is a better way to achieve this let me know.

Get "initial Key" value from .mp3 file

I can't find a way to read the "initial key" property from an mp3 file to use the song information in my application.
I've already tried to find libraries which do the job for me. I found TagLib# which is a very cool solution for getting tags/properties of different file formats. (including mp3).
I can use this library to get the title, the artist, the beats per minute and so on.. only the initial key value is missing for my use which isn't featured, unfortunately.
I also tried to find other solutions which support the initial key property but I haven't found one.
I already found a source which seems to address the same issue and solves it with using TagLib#, but I can't figure out how he solved that problem.
Use Ctrl + F and search for "Initial" to find the code block.
You can find the link here
I'll post a short part of my code which can be used to determine different info about one song in a pattern like this: (["bpm"]"title" - "artist")
var file = TagLib.File.Create(filePath);
return $"[{file.Tag.BeatsPerMinute}]{file.Tag.Title} - {file.Tag.FirstPerformer}";
Thanks for any help or recommendations in advance! :)

Try this:
public static void Main(string[] args)
{
var path = …
var file = TagLib.File.Create (path);
var id3tag = (TagLib.Id3v2.Tag)file.GetTag (TagTypes.Id3v2);
var key = ReadInitialKey (id3tag);
Console.WriteLine ("Key = " + key);
}
static string ReadInitialKey(TagLib.Id3v2.Tag id3tag)
{
var frame = id3tag.GetFrames<TextInformationFrame>().Where (f => f.FrameId == "TKEY").FirstOrDefault();
return frame.Text.FirstOrDefault() ;
}
On Windows 10 you can also use:
async Task<string> ReadInitialKey(string path)
{
StorageFile file = await StorageFile.GetFileFromPathAsync(path);
Windows.Storage.FileProperties.MusicProperties musicProperties = await file.Properties.GetMusicPropertiesAsync();
var props = await musicProperties.RetrievePropertiesAsync(null);
var inkp = props["System.Music.InitialKey"];
return (string)inkp;
}
See here for documentation on MusicProperties object and here for the valid music properties.

You can use the Shell to read all MP3 properties.
Test on Windows 10, VS 2015 =>
// Add Reference Shell32.DLL
string sFolder = "e:\\";
string sFile= "01. IMANY - Don't Be so Shy (Filatov & Karas Remix).mp3";
List<string> arrProperties = new List<string>();
Shell objShell = new Shell();
Folder objFolder;
objFolder = objShell.NameSpace(sFolder);
int nMaxProperties = 332;
for (int i = 0; i < nMaxProperties; i++)
{
string sHeader = objFolder.GetDetailsOf(null, i);
arrProperties.Add(sHeader);
}
FolderItem objFolderItem = objFolder.ParseName(sFile);
if (objFolderItem != null)
{
for (int i = 0; i < arrProperties.Count; i++)
{
Console.WriteLine((i + ('\t' + (arrProperties[i] + (": " + objFolder.GetDetailsOf(objFolderItem, i))))));
}
}

Just borrowing code from nuget: mono TaglibSharp:
var tfile = TagLib.File.Create(#"..");
string initialKey = null;
if (tfile.GetTag(TagTypes.Id3v2) is TagLib.Id3v2.Tag id3v2)
{
/*
// test: add custom Initial Key tag
var frame = TextInformationFrame.Get(id3v2, "TKEY", true);
frame.Text = new[] {"qMMM"};
frame.TextEncoding = StringType.UTF8;
tfile.Save();
*/
var frame = TextInformationFrame.Get(id3v2, "TKEY", false);
initialKey = frame?.ToString();
}

Winform Cefsharp: Can't clear cache directory

I'm using CefSharp in my WinForm project.
I wan't to clear the cache directory in real time:
if (browser != null)
{
BrowserPanel.Controls.Remove(browser);
browser = null;
}
String cachePath = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) + #"\TelegramParser\Users\" + userName;
if (Directory.Exists(cachePath))
{
Directory.Delete(cachePath, true);
}
But I always get an error that it is not possible to delete this directory.
This is how I declare the browser:
String cachePath = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) + #"\TelegramParser\Users\" + userName;
if (!System.IO.Directory.Exists(cachePath))
{
System.IO.Directory.CreateDirectory(cachePath);
}
var requestContextSettings = new RequestContextSettings { CachePath = cachePath };
if (browser != null && BrowserPanel.Controls.Contains(browser))
BrowserPanel.Controls.Remove(browser);
browser = new ChromiumWebBrowser();
browser.RequestContext = new RequestContext(requestContextSettings, new CustomRequestContextHandler());
browser.Dock = DockStyle.Fill;
JsDialogHandler js1 = new JsDialogHandler();
browser.JsDialogHandler = js1;
BrowserPanel.Controls.Add(browser);
browser.Load("https://google.com/");
What can I do to fix this?

As of 85.4 it is possible to delete cache of a running CefSharp browser using DevToolsClient and Network.ClearBrowserChache. As mentioned on General Usage wiki of CefSharp.
private async Task ClearCache(object sender)
{
using (var devToolsClient = Browser.GetDevToolsClient())
{
var response = await devToolsClient.Network.ClearBrowserCacheAsync();
}
}
Note: this will not deleted the entire folder, it will however clear cached objects.

Get image download url from firebase storage Xamarin

Im trying to get the image url from a photo I uploaded to firebase storage so I can store the reference to the image in another table which will allow me to be able to display the image elsewhere throughout the app.
I currently have
private void UploadPhoto()
{
if (filePAth != null)
{
progressDialog = new ProgressDialog(this);
progressDialog.SetTitle("Uploading...");
progressDialog.Window.SetType(Android.Views.WindowManagerTypes.SystemAlert);
progressDialog.Show();
var images = storageRef.Child("images/" + Guid.NewGuid().ToString());
images.PutFile(filePAth)
.AddOnProgressListener(this)
.AddOnSuccessListener(this)
.AddOnFailureListener(this);
}
}
public async void OnSuccess(Java.Lang.Object result)
{
try
{
var newImageDetails = storageRef.Child("images" + "/" + filePAth);
Photo photos = new Photo();
photos.categoryName = spinner.SelectedItem.ToString();
photos.photoId = newImageDetails.Name;
photos.ImageUrl = storageRef.DownloadUrl.ToString();
photos.tagName = addTag.Text;
if (user != null)
{
var uid = user.Uid;
//set the users id to the category
photos.uid = uid;
}
var firebase = new FirebaseClient(FirebaseURL);
var item = await firebase.Child("photos").PostAsync(photos);
}
}
The storageref.DownloadUrl does not give me the correct url
This is what I am looking for

I think that the trouble is Guid.NewGuid().
It generates a new code each time you insert a new image and your storageref points to it (image/GUID code).
In your OnSuccess you get image info from "images/" + filePath, that's different from upload path.
Why you use a new GUID? You can't determinate it, it will create a different path each time.
Consider then that your download url contains the media token too, it's not simply the clean path as you expect

I got a solution in debugging mode
i saw the downloadurl's properties and found the Scheme and SchemeSpecificPart
Scheme = "https"
SchemeSpecificPart = "//firebasestorage.googleapis.com/v0/b/maplog-e4ba5.appspot.com/o/-L0AMbihF23YKxsL1uss?alt=media&token=5c7ccef1-c857-4982-a288-fded2f0ff1aa"
so here is my code:
void IOnSuccessListener.OnSuccess(Java.Lang.Object result)
{
var snapShot = (UploadTask.TaskSnapshot)result;
string imgUrl = snapShot.DownloadUrl.Scheme
+ ":"
+ snapShot.DownloadUrl.SchemeSpecificPart;
}
and it works! i was looking for the solution :(( but i finally found it myself XD

Encoder SDK 4 - Push to Publishing Point

I'm coding an application in c# using EC4 SP2 SDK.
I want to publish my file to a media server publishing point. I've searched and found 2 examples regarding seting up and auth on publishing points, but either are from older sdk's or do not work (and are for console). basicly my application doesn't encode nothing, as if it had nothing to encode.
When in degub mode checkpont i can see the correct properties for the source file and for the server.
The encoding process takes 0secs to process. I checked the logs on the server events and i get a warning "the security system has received and auth request that could not be decoded". I just havo no knowledge to break up further than this. Any help would be appreciated.
this is the piece of code:
private void broadcastSourceFileToMediaServer2()
{
using (LiveJob job = new LiveJob())
{
String filetoencode = #"c:\temp\niceday.wmv";
LiveFileSource filesource = job.AddFileSource(filetoencode);
filesource.PlaybackMode = FileSourcePlaybackMode.Loop;
job.ActivateSource(filesource);
job.ApplyPreset(LivePresets.VC1Broadband4x3);
//don't know which one is good to use
job.AcquireCredentials += new EventHandler<AcquireCredentialsEventArgs>(job_AcquireCredentials);
_myUserName = "indes";
_pw = PullPW("indes");
Uri url = new Uri("http://192.168.1.74:8080/live");
PushBroadcastPublishFormat pubpoint = new PushBroadcastPublishFormat();
pubpoint.PublishingPoint = url;
pubpoint.UserName = _myUserName;
pubpoint.Password = _pw;
job.PublishFormats.Add(pubpoint);
job.PreConnectPublishingPoint();
job.StartEncoding();
statusBox.Text = job.NumberOfEncodedSamples.ToString();
job.StopEncoding();
job.Dispose();
}
}
public static string _myUserName { get; set; }
public static SecureString _pw { get; set; }
//codificação de Password a enviar
private static SecureString PullPW(string pw)
{
SecureString s = new SecureString();
foreach (char c in pw) s.AppendChar(c);
return s;
}
static void job_AcquireCredentials(object sender, AcquireCredentialsEventArgs e)
{
e.UserName = _myUserName;
e.Password = _pw;
e.Modes = AcquireCredentialModes.None;
}

Progresses:
I managed to authenticate (at least get a positive audit event) on the server.
I changed from this:
//don't know which one is good to use
job.AcquireCredentials += new EventHandler<AcquireCredentialsEventArgs>(job_AcquireCredentials);
_myUserName = "indes";
_pw = PullPW("indes");
Uri url = new Uri("http://192.168.1.74:8080/live");
PushBroadcastPublishFormat pubpoint = new PushBroadcastPublishFormat();
pubpoint.PublishingPoint = url;
pubpoint.UserName = _myUserName;
pubpoint.Password = _pw;
To this:
job.AcquireCredentials += new EventHandler<AcquireCredentialsEventArgs>(job_AcquireCredentials);
_myUserName = #"mediaservername\user";
_pw = PullPW("user_password");
Uri url = new Uri("http://192.168.1.74:8080/live");
PushBroadcastPublishFormat pubpoint = new PushBroadcastPublishFormat();
pubpoint.PublishingPoint = url;
If you see on one side if had to include the domain (either domain or computername) before username. this changed the failed audit events on the server, so i could eliminate the manual credentials pubpoint.username and pubpoint.Password.
Now I'm just dealing with a lack of output format exception. On to it.

How about using SMOOTH Streaming, I managed to get my project going but I didn't get much more beyond Look below, to the part that has the PUBLISH switch type. ignore the file portion
internal bool StartStream()
{
Busy = true;
// Instantiates a new job for encoding
//
//***************************************Live Stream Archive******************************
if (blnRecordFromFile)
{
// Sets up publishing format for file archival type
FileArchivePublishFormat fileOut = new FileArchivePublishFormat();
// job.ApplyPreset(LivePresets.VC1512kDSL16x9);
// Gets timestamp and edits it for filename
string timeStamp = DateTime.Now.ToString();
timeStamp = timeStamp.Replace("/", "-");
timeStamp = timeStamp.Replace(":", ".");
// Sets file path and name
string path = "C:\\output\\";
string filename = "Capture" + timeStamp + ".ismv";
if (!Directory.Exists(path))
Directory.CreateDirectory(path);
fileOut.OutputFileName = Path.Combine(path, filename);
// Adds the format to the job. You can add additional formats as well such as
// Publishing streams or broadcasting from a port
job.PublishFormats.Add(fileOut);
}
//******************************END OF Stream PORTION****************************************
////////////////////////////////////////////////////////////////////////////////////////////////////
//*************************************** Process Files or Live Stream******************************
if (blnRecordFromFile)
{
job.ApplyPreset(LivePresets.VC1IISSmoothStreaming720pWidescreen);
job = new LiveJob();
// Verifies all information is entered
if (string.IsNullOrWhiteSpace(sourcePath) || string.IsNullOrWhiteSpace(destinationPath))
return false;
job.Status += new EventHandler<EncodeStatusEventArgs>(StreamStatus);
LiveFileSource fileSource;
try
{
// Sets file to active source and checks if it is valid
fileSource = job.AddFileSource(sourcePath);
}
catch (InvalidMediaFileException)
{
return false;
}
// Sets to loop media for streaming
// fileSource.PlaybackMode = FileSourcePlaybackMode.Loop;
// Makes this file the active source. Multiple files can be added
// and cued to move to each other at their ends
job.ActivateSource(fileSource);
}
//******************************END OF FILE PORTION****************************************
// Sets up variable for fomat data
switch (publishType)
{
case Output.Archive:
// Verifies destination path exists and if not creates it
try
{
if (!Directory.Exists(destinationPath))
Directory.CreateDirectory(destinationPath);
}
catch (IOException)
{
return false;
}
FileArchivePublishFormat archiveFormat = new FileArchivePublishFormat();
// Gets the location of the old extention and removes it
string filename = Path.GetFileNameWithoutExtension(sourcePath);
// Sets the archive path and file name
archiveFormat.OutputFileName = Path.Combine(destinationPath, filename + ".ismv");
job.PublishFormats.Add(archiveFormat);
break;
case Output.Publish:
// Setups streaming of media to publishing point
job = new LiveJob();
// Aquires audio and video devices
Collection<EncoderDevice> devices = EncoderDevices.FindDevices(EncoderDeviceType.Video);
EncoderDevice video = devices.Count > 0 ? devices[0] : null;
for (int i = 0; i < devices.Count; ++i)
// devices[i].Dispose();
devices.Clear();
devices = EncoderDevices.FindDevices(EncoderDeviceType.Audio);
EncoderDevice audio = devices.Count > 0 ? devices[0] : null;
for (int i = 1; i < devices.Count; ++i)
devices[i].Dispose();
devices.Clear();
// Checks for a/v devices
if (video != null && audio != null)
{
//job.ApplyPreset(Preset.FromFile(#"C:\Tempura\LivePreset3.xml"));
job.ApplyPreset(LivePresets.H264IISSmoothStreamingLowBandwidthStandard);
job.OutputFormat.VideoProfile.SmoothStreaming = true;
deviceSource = job.AddDeviceSource(video, audio);
// Make this source the active one
job.ActivateSource(deviceSource);
}
else
{
error = true;
}
PushBroadcastPublishFormat publishFormat = new PushBroadcastPublishFormat();
try
{
// checks the path for a valid publishing point
publishFormat.PublishingPoint = new Uri(destinationPath);
}
catch (UriFormatException)
{
return false;
}
// Adds the publishing format to the job
try
{
// job.ApplyPreset(LivePresets.VC1IISSmoothStreaming480pWidescreen);
job.PublishFormats.Add(publishFormat);
job.PreConnectPublishingPoint();
}
catch (Exception e)
{
MessageBox.Show(e.StackTrace.ToString());
}
break;
default:
return false;
}
job.StartEncoding();
return true;
}

Sadly I dont have enough rep to comment, so I have to write it as an answer.
Due to you are starting a live job, in order to stream you should not call job.StopEncoding() right after StartEncoding. I think usually you would use an event to stop the encoding. If you start encoding and immediately stop it, it is only logical you have no, or only a very small output.

I changed your code to the following and it seems work well. I guess your problem is that you disposed the instance of LiveJob class. You have to keep the instance alive before it finished encoding the whole stream. So change the using part and remove the StopEncoding and Dispose will be OK.
private void broadcastSourceFileToMediaServer2()
{
LiveJob job = new LiveJob();
String filetoencode = #"c:\temp\niceday.wmv";
LiveFileSource filesource = job.AddFileSource(filetoencode);
filesource.PlaybackMode = FileSourcePlaybackMode.Loop;
job.ActivateSource(filesource);
job.ApplyPreset(LivePresets.VC1Broadband4x3);
//don't know which one is good to use
job.AcquireCredentials += new EventHandler<AcquireCredentialsEventArgs>(job_AcquireCredentials);
_myUserName = "indes";
_pw = PullPW("indes");
Uri url = new Uri("http://192.168.1.74:8080/live");
PushBroadcastPublishFormat pubpoint = new PushBroadcastPublishFormat();
pubpoint.PublishingPoint = url;
pubpoint.UserName = _myUserName;
pubpoint.Password = _pw;
job.PublishFormats.Add(pubpoint);
job.PreConnectPublishingPoint();
job.StartEncoding();
statusBox.Text = job.NumberOfEncodedSamples.ToString();
}
public static string _myUserName { get; set; }
public static SecureString _pw { get; set; }
//codificação de Password a enviar
private static SecureString PullPW(string pw)
{
SecureString s = new SecureString();
foreach (char c in pw) s.AppendChar(c);
return s;
}
static void job_AcquireCredentials(object sender, AcquireCredentialsEventArgs e)
{
e.UserName = _myUserName;
e.Password = _pw;
e.Modes = AcquireCredentialModes.None;
}