Reading a project text file windows phone 8 - windows-phone-8

I'm having trouble accessing a text file that is packaged with my Windows Phone 8 app.
Here is the code:
var ResrouceStream = Application.GetResourceStream(new Uri("Data-Test.docx", UriKind.Relative));
if (ResrouceStream != null)
{
Stream myFileStream = ResrouceStream.Stream;
if (myFileStream.CanRead)
{
// logiic here
retrun "Hi";
}
}
else
{
return "hello";
}
Seems simple but the app always returns "hello". i have placed the file in root and also in assets, changed it to content - copy and do not copy, resource copy and do not copy but always it returns "hello".
Spent several hours on this and all solutions I can find show the solution or very similar above!
What am I doing wrong?
EDIT: Returns "hello" when I deploy to phone or emulator.
also tried "/Data-Test...", #"\Data-Text..., #/"Data-Test...!
UPDATE 1:
string aReturn = "";
var asm = Assembly.GetExecutingAssembly();
//Use this to verify the namespacing of the "Embedded Resource".
//asm.GetManifestResourceNames()
// .ToList()
// .ForEach(name => Debug.WriteLine(name));
var ResourceStream = asm.GetManifestResourceStream("ContosoSocial.Assets.QuizQuestions.QuizQuestions-Test1.docx");
if (ResourceStream != null) // <--CHECKED AND DOES NOT EQUAL NULL
{
Stream myFileStream = ResourceStream;
if (myFileStream.CanRead) // <-- CHEACKED AND CAN READ
{
StreamReader myStreamReader = new StreamReader(myFileStream);
LOGIC & EXCEPTION HERE...?
string myLine = myStreamReader.ReadLine();
}
else
{
aReturn = "myFileStream.CanRead = true";
}
}
else
{
aReturn = "stream equals null";
}
Debug.WriteLine(aReturn);
}
The assignment of myFileStream to a StreamReader object is throwing the exception null pointer. I thought I would wrap myFileStream to a StreamReader so I can read a line at a time..? This is my first c# project and I'm unfamiliar with it's syntax and classes.
UPDATE 2:
OK I added...
Debug.WriteLine(aReturn);
...following...
string myLine = myStreamReader.ReadLine();
...and noticed it was retrieving only the 2 characters 'PK' !
So saved the .docx file as .txt and reinserted adn changed build copy to embedded - do not copy...Happy days it now pulls off the first line in the file.
Thanks to OmegaMan for your help with this one :-)

Change file type in the project to Embedded Resource
Extract the resource by working the namespace to its location. Here is an example code where I pull in an XSD:
Code:
var asm = Assembly.GetExecutingAssembly();
// Use this to verify the namespacing of the "Embedded Resource".
// asm.GetManifestResourceNames()
// .ToList()
// .ForEach(name => Debug.WriteLine(name));
var f1 = asm.GetManifestResourceStream("UnitTests.Resources.NexusResponse.xsd");
Note this is not tested on WP8, but GetExecutingAssembly is stated to work within .Net. If you get the namespace wrong, uncomment out the code and display or debug to determine the resources and their namespace.

Related

Embedding MS-Office Documents Into AutoCAD Drawings Using Design Automation

I have a need to embed MS-Office documents (Excel, Word) into AutoCAD using Design Automation. Searching around the web, it seems that this is not possible because the MS-Office applications, which would act as an OLE Client, would need to be running on the Forge Server. Could someone confirm that this is the case?
If I am correct in my above statement, my next best alternative would be to embed .EMF files created from each page of the document I want to embed; alternatively using raster images would also be acceptable. Creating the .EMF or raster files is not a problem. I just can't find a solution for embedding the file that does not involve copying them to the clipboard and using the PASTECLIP command. This approach has worked for me in the AutoCAD application using a C# AutoCAD.NET plugin, an OLE2Frame object is created, but it fails in accoreconsole (because PASTECLIP uses a UI class which is not available). This leads me to think that the same would occur while running the bundle in Design Automation.
The best I have been able achieve so far is to write a raster image files to the working directory and linking the raster images to the AutoCAD document using RasterImageDef and RasterImage (code below). Is this the only way I can do this? Can I do something similar using an EMF image, which is vector based, instead of a raster image? Or is there a way to actually embed an EMF (preferred) or raster image instead of just linking the images?
The code below fails if I use .EMF files, because RasterImageDef and RasterImage do not support the the EMF file; the EMF file being a vector format, not a raster format?
[CommandMethod("TEST")]
public void Test()
{
Document doc = Application.DocumentManager.MdiActiveDocument;
Database db = doc.Database;
Editor ed = doc.Editor;
// Get the file name of the image using the editor to prompt for the file name
// Create the prompt
PromptOpenFileOptions options = new PromptOpenFileOptions("Enter Sequence file path");
options.PreferCommandLine = true;
// Get the file name, use no quotes
PromptFileNameResult result = null;
try { result = ed.GetFileNameForOpen(options); }
catch (System.Exception ex)
{
DisplayLogMessage($"Could not get sequence file location. Exception: {ex.Message}.", ed);
return;
}
// Get the rtf filename from the results
string filename = result.StringResult;
DisplayLogMessage($"Got sequence filename: {filename}", ed);
// Load the Sequence.rtf document
Aspose.Words.Document seq;
using (FileStream st = new FileStream(filename, FileMode.Open))
{
seq = new Aspose.Words.Document(st);
st.Close();
}
DisplayLogMessage($"Aspose.Words Loaded: {filename}", ed);
Transaction trans = db.TransactionManager.StartTransaction();
// Get or create the image dictionary
ObjectId imageDictId = RasterImageDef.GetImageDictionary(db);
if (imageDictId != null)
imageDictId = RasterImageDef.CreateImageDictionary(db);
// Open the Image Dictonary
DBDictionary imageDict = (DBDictionary)trans.GetObject(imageDictId, OpenMode.ForRead);
double x = 0.0;
double y = 0.0;
try
{
// For each page in the Sequence.
for (int i = 0; i < seq.PageCount; i++)
{
DisplayLogMessage($"Starting page {i + 1}", ed);
// extract the page.
Aspose.Words.Document newSeq = seq.ExtractPages(i, 1);
Aspose.Words.Saving.ImageSaveOptions imgOptions = new Aspose.Words.Saving.ImageSaveOptions(Aspose.Words.SaveFormat.Emf);
imgOptions.Resolution = 300;
DisplayLogMessage($"Extracted page {i + 1}", ed);
string dictName = Guid.NewGuid().ToString();
filename = Path.Combine(Path.GetDirectoryName(doc.Name), dictName + ".Emf");
// Save the image
SaveOutputParameters sp = newSeq.Save(filename, imgOptions);
DisplayLogMessage($"Saved {dictName}.Emf", ed);
RasterImageDef imageDef = null;
ObjectId imageDefId;
// see if my guid is in there
if (imageDict.Contains(dictName))
imageDefId = (ObjectId)imageDict.GetAt(dictName);
else
{
// Create an image def
imageDef = new RasterImageDef();
imageDef.SourceFileName = $"./{dictName}.Emf";
// load the image
imageDef.Load();
imageDict.UpgradeOpen();
imageDefId = imageDict.SetAt(dictName, imageDef);
trans.AddNewlyCreatedDBObject(imageDef, true);
}
// create raster image to reference the definition
RasterImage image = new RasterImage();
image.ImageDefId = imageDefId;
// Prepare orientation
Vector3d uCorner = new Vector3d(8.5, 0, 0);
Vector3d vOnPlane = new Vector3d(0, 11, 0);
Point3d ptInsert = new Point3d(x, y, 0);
x += 8.5;
CoordinateSystem3d coordinateSystem = new CoordinateSystem3d(ptInsert, uCorner, vOnPlane);
image.Orientation = coordinateSystem;
// some other stuff
image.ImageTransparency = true;
image.ShowImage = true;
// Add the image to ModelSpace
BlockTable bt = (BlockTable)trans.GetObject(db.BlockTableId, OpenMode.ForRead);
BlockTableRecord btr = (BlockTableRecord)trans.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite);
btr.AppendEntity(image);
trans.AddNewlyCreatedDBObject(image, true);
// Create a reactor between the RasterImage
// and the RasterImageDef to avoid the "Unreferenced"
// warning the XRef palette
RasterImage.EnableReactors(true); // in the original was true
image.AssociateRasterDef(imageDef);
}
trans.Commit();
}
catch (System.Exception ex)
{
DisplayLogMessage("ERROR: " + ex.Message,ed);
trans.Abort();
}
}
Raster images are always linked. There's no way to embed them. The only way to embed an image is to use AcDbOle2Frame (C++) or Autodesk.AutoCAD.DatabaseServices.Ole2Frame (C#). In theory, it is possible to create these objects without the "OLE server" being present but I haven't tried so I don't know if enough APIs are exposed to make it happen.
You should try it and see how far you can get.
Albert
There is way to embed raster image, it is not straightforeward, you need to use C++\ObjectARX API, please refer this https://github.com/MadhukarMoogala/EmbedRasterImage/tree/EmbedRasterImageUsingDBX

How to pass a JSON object inside a QTextEdit

I have a small GUI that I use to load/save json configuration files, the most important parameters are in the gui below:
![conf]
The problem I have been trying to solve is that I am not able to create an object inside a QTextEdit and am not sure why despite I am following official documentation on how to do that.
Below a snippet of code both for the load and save button.
Also for the sake of brevity I only kept how I did the spinbox and, of course, the textedit:
void SettingsForm::on_loadBtn_clicked()
{
// Opening file dialog....
if(listDocksConfig.isEmpty())
{
QMessageBox::information(this, tr("Message"), tr("Please Open Configuration"));
}
else
{
QJsonDocument doc;
QJsonObject obj;
QByteArray data_json;
QFile input(listDocksConfig);
if(input.open(QIODevice::ReadOnly | QIODevice::Text))
{
data_json = input.readAll();
doc = doc.fromJson(data_json);
obj = doc.object();
const double xposValue = obj["X Pos"].toDouble();
QTextEdit textEdit = QTextEdit::setText(obj["comments"]); // <- Error Here
ui->doubleSpinBox_XPos->setValue(xposValue);
ui->textEdit->setText(textEdit); // <- Error Here
}
else
{
// do something
}
}
}
void SettingsForm::on_saveBtn_clicked()
{
// saving configuration with file dialog....
if(listDocksConfig.isEmpty())
{
// do something...
}
else
{
const double xposValue = ui->doubleSpinBox_XPos->value();
QTextEdit textEdit = ui->textEdit->setPlainText(); // <- Error Here
QJsonDocument doc;
QJsonObject obj;
obj["X Pos"] = xposValue;
obj["comments"] = textEdit.toString(); // <- Error Here
doc.setObject(obj);
QByteArray data_json = doc.toJson();
QFile output(listDocksConfig);
}
}
What I have done so far:
I consulted the official documentation on how to solve this problem, but could not figure out why that was not working. I also went ahead and try to use an alternative such as setText but still no luck.
I came across this source which I used as guidance for my example and solved almost all problems but the QTextEdit one.
This additional post was useful but still couldn't solve the problem.
Thanks for pointing to the right direction for solving this problem.
this line is wrong!!
QTextEdit textEdit = ui->textEdit->setPlainText();
setPlainText() needs const QString &text as parameter
you cant do that, read the official doc here
the method is void, ie. it returns nothing so you can not use void to init a QTextEdit object
update:
you already have a textEdit in the layout, so no reason to redefine one...
you can do:
ui->textEdit->setPlainText(obj["comments"].toString());

Windows Phone 8 choose text file C#

i have a question. If there is a possibility at windows phone 8 at visual studio to create button event to read text file? i know about streamReader and if i declare wchich exacly file i want to read, but if i want to choose from list of files wchich i want to display. i did research on the Internet but i didint find an answer. I know i can use isolatedStorage to read music, video, image but not text files, on the app i created few files with text in it and i want users to have posibility to display one from this file, whichever they want to see. So, can you tell me how to do this?
You can use IsolatedStorage to read any file type you wish. You must of been using something like a Launcher that filters out the file type based on the Chooser.
You can open a file like this:
private async Task<string> ReadTextFile(string file_name)
{
// return buffer
string file_content = "";
// Get the local folder
StorageFolder local = Windows.Storage.ApplicationData.Current.LocalFolder;
if (local != null)
{
// Get the file
StorageFile file;
try
{
file = await local.GetFileAsync(file_name);
}
catch (Exception ex)
{
// no file, return empty
return file_content;
}
// Get the stream
System.IO.Stream file_stream = await file.OpenStreamForReadAsync();
// Read the data
using (StreamReader streamReader = new StreamReader(file_stream))
{
file_content = streamReader.ReadToEnd(); // read the full text file
streamReader.Close();
}
// Close the stream
file_stream.Close();
}
// return
return file_content;
}
If you want to get the PackageLocation (files that you added into the project like assets and images) then replace the LocalFolder with
Windows.ApplicationModel.Package package = Windows.ApplicationModel.Package.Current;
Windows.Storage.StorageFolder installedLocation = package.InstalledLocation;
With Windows Phone 8.1, File Pickers are allowed, consisting the same functionality you are expecting, so probably you might want to upgrade your app to WP8.1.
Here's more info on this API : Working with File Pickers

Any replacement for Path.GetFullPath in WinRT?

In the .NET API for Windows Store Apps the Path class does not have the GetFullPath method. I need to normalize a path though, which was easy using GetFullPath. Does anyone know another method or external code that normalizes a path? What I mean with that is for example:
add the application's path if the path does not start with a drive
handle ..\ and .\ correctly
GetFullPath is pretty complex and mimicking the functionality is not easy.
As far as i understand, in WinRT you rather work with the package's installed location or with "known" folders:
Windows.ApplicationModel.Package.Current.InstalledLocation.GetFileAsync(fileName)
KnownFolders.DocumentsLibrary.GetFileAsync(fileName)
I did not find any replacement for GetFullPath, but developed a method that handles parent directory tokens (..\) like GetFullPath.
Here it is:
public static string NormalizePath(string path)
{
if (String.IsNullOrEmpty(path) == false)
{
// Correct multiple backslashes
path = Regex.Replace(path, #"\\+", #"\");
// Correct parent directory tokens with too many points in it
path = Regex.Replace(path, #"\\\.\.+", #"\..");
// Split the path into tokens
List<string> resultingPathTokens = new List<string>();
var pathTokens = path.Split('\\');
// Iterate through the tokens to process parent directory tokens
foreach (var pathToken in pathTokens)
{
if (pathToken == "..")
{
if (resultingPathTokens.Count > 1)
{
resultingPathTokens.RemoveAt(resultingPathTokens.Count - 1);
}
}
else
{
resultingPathTokens.Add(pathToken);
}
}
// Get the resulting path
string resultingPath = String.Join("\\", resultingPathTokens);
// Check if the path contains only two chars with a colon as the second
if (resultingPath.Length == 2 && resultingPath[1] == ':')
{
// Add a backslash in this case
resultingPath += "\\";
}
return resultingPath;
}
return path;
}

Calling wkhtmltopdf to generate PDF from HTML

I'm attempting to create a PDF file from an HTML file. After looking around a little I've found: wkhtmltopdf to be perfect. I need to call this .exe from the ASP.NET server. I've attempted:
Process p = new Process();
p.StartInfo.UseShellExecute = false;
p.StartInfo.FileName = HttpContext.Current.Server.MapPath("wkhtmltopdf.exe");
p.StartInfo.Arguments = "TestPDF.htm TestPDF.pdf";
p.Start();
p.WaitForExit();
With no success of any files being created on the server. Can anyone give me a pointer in the right direction? I put the wkhtmltopdf.exe file at the top level directory of the site. Is there anywhere else it should be held?
Edit: If anyone has better solutions to dynamically create pdf files from html, please let me know.
Update:
My answer below, creates the pdf file on the disk. I then streamed that file to the users browser as a download. Consider using something like Hath's answer below to get wkhtml2pdf to output to a stream instead and then send that directly to the user - that will bypass lots of issues with file permissions etc.
My original answer:
Make sure you've specified an output path for the PDF that is writeable by the ASP.NET process of IIS running on your server (usually NETWORK_SERVICE I think).
Mine looks like this (and it works):
/// <summary>
/// Convert Html page at a given URL to a PDF file using open-source tool wkhtml2pdf
/// </summary>
/// <param name="Url"></param>
/// <param name="outputFilename"></param>
/// <returns></returns>
public static bool HtmlToPdf(string Url, string outputFilename)
{
// assemble destination PDF file name
string filename = ConfigurationManager.AppSettings["ExportFilePath"] + "\\" + outputFilename + ".pdf";
// get proj no for header
Project project = new Project(int.Parse(outputFilename));
var p = new System.Diagnostics.Process();
p.StartInfo.FileName = ConfigurationManager.AppSettings["HtmlToPdfExePath"];
string switches = "--print-media-type ";
switches += "--margin-top 4mm --margin-bottom 4mm --margin-right 0mm --margin-left 0mm ";
switches += "--page-size A4 ";
switches += "--no-background ";
switches += "--redirect-delay 100";
p.StartInfo.Arguments = switches + " " + Url + " " + filename;
p.StartInfo.UseShellExecute = false; // needs to be false in order to redirect output
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.RedirectStandardError = true;
p.StartInfo.RedirectStandardInput = true; // redirect all 3, as it should be all 3 or none
p.StartInfo.WorkingDirectory = StripFilenameFromFullPath(p.StartInfo.FileName);
p.Start();
// read the output here...
string output = p.StandardOutput.ReadToEnd();
// ...then wait n milliseconds for exit (as after exit, it can't read the output)
p.WaitForExit(60000);
// read the exit code, close process
int returnCode = p.ExitCode;
p.Close();
// if 0 or 2, it worked (not sure about other values, I want a better way to confirm this)
return (returnCode == 0 || returnCode == 2);
}
I had the same problem when i tried using msmq with a windows service but it was very slow for some reason. (the process part).
This is what finally worked:
private void DoDownload()
{
var url = Request.Url.GetLeftPart(UriPartial.Authority) + "/CPCDownload.aspx?IsPDF=False?UserID=" + this.CurrentUser.UserID.ToString();
var file = WKHtmlToPdf(url);
if (file != null)
{
Response.ContentType = "Application/pdf";
Response.BinaryWrite(file);
Response.End();
}
}
public byte[] WKHtmlToPdf(string url)
{
var fileName = " - ";
var wkhtmlDir = "C:\\Program Files\\wkhtmltopdf\\";
var wkhtml = "C:\\Program Files\\wkhtmltopdf\\wkhtmltopdf.exe";
var p = new Process();
p.StartInfo.CreateNoWindow = true;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.RedirectStandardError = true;
p.StartInfo.RedirectStandardInput = true;
p.StartInfo.UseShellExecute = false;
p.StartInfo.FileName = wkhtml;
p.StartInfo.WorkingDirectory = wkhtmlDir;
string switches = "";
switches += "--print-media-type ";
switches += "--margin-top 10mm --margin-bottom 10mm --margin-right 10mm --margin-left 10mm ";
switches += "--page-size Letter ";
p.StartInfo.Arguments = switches + " " + url + " " + fileName;
p.Start();
//read output
byte[] buffer = new byte[32768];
byte[] file;
using(var ms = new MemoryStream())
{
while(true)
{
int read = p.StandardOutput.BaseStream.Read(buffer, 0,buffer.Length);
if(read <=0)
{
break;
}
ms.Write(buffer, 0, read);
}
file = ms.ToArray();
}
// wait or exit
p.WaitForExit(60000);
// read the exit code, close process
int returnCode = p.ExitCode;
p.Close();
return returnCode == 0 ? file : null;
}
Thanks Graham Ambrose and everyone else.
OK, so this is an old question, but an excellent one. And since I did not find a good answer, I made my own :) Also, I've posted this super simple project to GitHub.
Here is some sample code:
var pdfData = HtmlToXConverter.ConvertToPdf("<h1>SOO COOL!</h1>");
Here are some key points:
No P/Invoke
No creating of a new process
No file-system (all in RAM)
Native .NET DLL with intellisense, etc.
Ability to generate a PDF or PNG (HtmlToXConverter.ConvertToPng)
Check out the C# wrapper library (using P/Invoke) for the wkhtmltopdf library: https://github.com/pruiz/WkHtmlToXSharp
There are many reason why this is generally a bad idea. How are you going to control the executables that get spawned off but end up living on in memory if there is a crash? What about denial-of-service attacks, or if something malicious gets into TestPDF.htm?
My understanding is that the ASP.NET user account will not have the rights to logon locally. It also needs to have the correct file permissions to access the executable and to write to the file system. You need to edit the local security policy and let the ASP.NET user account (maybe ASPNET) logon locally (it may be in the deny list by default). Then you need to edit the permissions on the NTFS filesystem for the other files. If you are in a shared hosting environment it may be impossible to apply the configuration you need.
The best way to use an external executable like this is to queue jobs from the ASP.NET code and have some sort of service monitor the queue. If you do this you will protect yourself from all sorts of bad things happening. The maintenance issues with changing the user account are not worth the effort in my opinion, and whilst setting up a service or scheduled job is a pain, its just a better design. The ASP.NET page should poll a result queue for the output and you can present the user with a wait page. This is acceptable in most cases.
You can tell wkhtmltopdf to send it's output to sout by specifying "-" as the output file.
You can then read the output from the process into the response stream and avoid the permissions issues with writing to the file system.
My take on this with 2018 stuff.
I am using async. I am streaming to and from wkhtmltopdf. I created a new StreamWriter because wkhtmltopdf is expecting utf-8 by default but it is set to something else when the process starts.
I didn't include a lot of arguments since those varies from user to user. You can add what you need using additionalArgs.
I removed p.WaitForExit(...) since I wasn't handling if it fails and it would hang anyway on await tStandardOutput. If timeout is needed, then you would have to call Wait(...) on the different tasks with a cancellationtoken or timeout and handle accordingly.
public async Task<byte[]> GeneratePdf(string html, string additionalArgs)
{
ProcessStartInfo psi = new ProcessStartInfo
{
FileName = #"C:\Program Files\wkhtmltopdf\wkhtmltopdf.exe",
UseShellExecute = false,
CreateNoWindow = true,
RedirectStandardInput = true,
RedirectStandardOutput = true,
RedirectStandardError = true,
Arguments = "-q -n " + additionalArgs + " - -";
};
using (var p = Process.Start(psi))
using (var pdfSream = new MemoryStream())
using (var utf8Writer = new StreamWriter(p.StandardInput.BaseStream,
Encoding.UTF8))
{
await utf8Writer.WriteAsync(html);
utf8Writer.Close();
var tStdOut = p.StandardOutput.BaseStream.CopyToAsync(pdfSream);
var tStdError = p.StandardError.ReadToEndAsync();
await tStandardOutput;
string errors = await tStandardError;
if (!string.IsNullOrEmpty(errors)) { /* deal/log with errors */ }
return pdfSream.ToArray();
}
}
Things I haven't included in there but could be useful if you have images, css or other stuff that wkhtmltopdf will have to load when rendering the html page:
you can pass the authentication cookie using --cookie
in the header of the html page, you can set the base tag with href pointing to the server and wkhtmltopdf will use that if need be
Thanks for the question / answer / all the comments above. I came upon this when I was writing my own C# wrapper for WKHTMLtoPDF and it answered a couple of the problems I had. I ended up writing about this in a blog post - which also contains my wrapper (you'll no doubt see the "inspiration" from the entries above seeping into my code...)
Making PDFs from HTML in C# using WKHTMLtoPDF
Thanks again guys!
The ASP .Net process probably doesn't have write access to the directory.
Try telling it to write to %TEMP%, and see if it works.
Also, make your ASP .Net page echo the process's stdout and stderr, and check for error messages.
Generally return code =0 is coming if the pdf file is created properly and correctly.If it's not created then the value is in -ve range.
using System;
using System.Diagnostics;
using System.Web;
public partial class pdftest : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
private void fn_test()
{
try
{
string url = HttpContext.Current.Request.Url.AbsoluteUri;
Response.Write(url);
ProcessStartInfo startInfo = new ProcessStartInfo();
startInfo.FileName =
#"C:\PROGRA~1\WKHTML~1\wkhtmltopdf.exe";//"wkhtmltopdf.exe";
startInfo.Arguments = url + #" C:\test"
+ Guid.NewGuid().ToString() + ".pdf";
Process.Start(startInfo);
}
catch (Exception ex)
{
string xx = ex.Message.ToString();
Response.Write("<br>" + xx);
}
}
protected void btn_test_Click(object sender, EventArgs e)
{
fn_test();
}
}