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I have project and I want to make a receipt of a buyer and write it on the notepad but my problem is when I install my application on other computer. the notepad is not opening and nothing happen when button click
var path = Path.Combine(Directory.GetCurrentDirectory(), "\\Receipt.txt");
using (StreamWriter w = new StreamWriter(path))
{
string x=label1.Text.Replace(" ",string.Empty);
string x2 = label2.Text.Replace(" ", string.Empty);
string x3 = label3.Text.Replace(" ", string.Empty);
string x4 = label4.Text.Replace(" ", string.Empty);
string x5 = label5.Text.Replace(" ", string.Empty);
w.Write("***************OFFICIAL RECEIPT*************** \r\n", true);
w.Write("\r\n"+"\r\n"+"***************Buyer Information*************"+"\r\n");
w.Write(x+"\r\n",true);
w.Write(x2+ "\r\n", true);
w.Write(x3 + "\r\n", true);
w.Write(x4 + "\r\n", true);
w.Write(x5+ "\r\n", true);
w.Write("\r\n" + "***************PURCHASE ITEM*****************" + "\r\n");
w.Write("ITEM QUANTITY PRICE" + "\r\n");
for (int xx = 0; xx<listBox1.Items.Count;xx++ )
{
w.Write(listBox1.Items[xx].ToString()+"\r\n");
}
w.Write("_____________________________________________"+ "\r\n");
w.Write("TOTAL " + totalprice+"\r\n"+"\r\n");
w.Write(" -THIS IS YOUR OFFICIAL RECEIPT- "+"\r\n");
w.Write(" THANK YOU FOR BUYING! ");
w.Close();
}
Process.Start("notepad.exe", path);
Try Changing
var path = Path.Combine(Directory.GetCurrentDirectory(), "\\Receipt.txt");
to
var path = Application.StartupPath + "\\Receipt.txt";
.
And also
Process.Start("notepad.exe", path);
to
Process.Start("notepad.exe", "\"" + path + "\"");
Changing this helped some people in some cases
providing quotes might help in case if the problem is because of empty spaces in folder names
Assuming this is winforms, as a test, change your catch block to look like this:
catch (Exception exception)
{
MessageBox.Show(exception.ToString());
throw;
}
If it's working on your dev box and not on another computer, I'd be willing to bet you have a permissions issue. Just try the code above and see what message you get. Then you can figure out what is wrong and how to fix it.
Related
So, I made a speech recognizer and it was working fine, I'm not sure why is it giving me this error right now. Any ideas?
String res = e.Result.Text;
string yol = System.IO.Path.GetDirectoryName(Application.ExecutablePath);
string settings = ("#" + yol + "\\" + "settings" + "\\");
if (res == "Hi Bot")
{
pictureBox1.Image = Image.FromFile(settings + "mybot.png"); -->That's where i get the error
say(greetings_random());
}
string yol = System.IO.Path.GetDirectoryName(Application.ExecutablePath);
string settings = ("#" + yol + "\\" + "settings" + "\\");
This means that settings has the value "#C:\Path\To\Executable\settings\".
That's probably not what you want -- I'm not sure what the # is trying to achieve, but it's not valid at the beginning of a path like that.
For future, debugging this code and inspecting the settings variable would quickly have shown the problem.
That said, it's recommended to use Path.Join (.NET Core 2.1+) or Path.Combine instead of string concatenation to create paths like this.
I am trying to make to create a .cmd file with this code into it: call .\CopyToTarget.cmd w60 glb "C:\Users\oma\me\trunk-r664\USB-map". I am creating this code ~5 times.
But since \trunk-r664\ is already in use it seems like I cannot write: #"\trunk-r664\USB-map" into the .cmd file for some reason. Does anyone know how to fix it? It keeps getting me the error: UnauthorizedAccesExpection was unhandled, ccess to the path 'C:\Users\me\Desktop\trunk-r664\USB-map' is denied.
using (StreamWriter sw = File.CreateText(Environment.GetFolderPath(Environment.SpecialFolder.Desktop)
+ "\\trunk-r664\\trunk\\cmd\\custom\\RunAll.cmd"))
{
for (int j=0;j<installeerlijst64.Count;j++)
{
sw.WriteLine("call .\\CopyToTarget.cmd " + installeerlijst64[j] + " glb" +
File.CreateText(Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + #"\trunk-r664\USB-map"));
}
}
I tried this too, but it tells me I am using an illegal character:
"\""+File.CreateText(Environment.GetFolderPath(Environment.SpecialFolder.Desktop)
+ #"\trunk-r664\USB-map" + "\""));
File.CreateText will create a new file. First time when for loop execute, it will create and open the file USB-map and hold the handle of that file. During second iteration of for loop, it will try to do the same thing. Hence, already in use error.
Remove File.CreateText and you will get the desired result.
sw.WriteLine("call .\\CopyToTarget.cmd " + installeerlijst64[j] + " glb " + "\"" +
Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + #"\trunk-r664\USB-map" + "\"");
I have this piece of code written in C# (it's part of implementation of ID3 algorithm)
public static void printNode(TreeNode root, string tabs, ref StreamWriter xa)
{
//Console.ReadKey();
Console.WriteLine(tabs + '|' + root.attribute + '|');
if (root.attribute.values != null)
{
for (int i = 0; i < root.attribute.values.Length; i++)
{
Console.WriteLine(tabs + "\t" + "<" + root.attribute.values[i] + ">");
xa.WriteLine(tabs + "\n" + root.attribute.values[i] +"\n");
TreeNode childNode = root.getChildByBranchName(root.attribute.values[i]);
printNode(childNode, "\t" + tabs, ref xa);
}
}
}
I also have this declaration.
StreamWriter xa = new StreamWriter("tree1.txt");
And issue is that after running code file 'tree1.txt' is always empty. Any idea how to handle this? As you can see I tried references cause it seems to me like right course of action but I don't really know much about C# and recurrence function behaviour.
You need to close the StreamWriter to force it to flush to disk.
You also need to look in the current directory, which might not be what you think it is.
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Here is my code:
private void Instalarbtn_Click(object sender, RoutedEventArgs e)
{
string MinecraftFolder = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) + "/.minecraft";
string destinationFile = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "system.zip");
FastZip FastZip = null;
if (Directory.Exists(MinecraftFolder + "/temp"))
{
Directory.Delete(MinecraftFolder + "/temp", true);
}
FastZip.ExtractZip(MinecraftFolder + "/bin/minecraft.jar", MinecraftFolder + "/temp/Minecraft", String.Empty);
try
{
Directory.Delete(MinecraftFolder + "/temp/Minecraft/META-INF", true);
}
catch (DirectoryNotFoundException e1)
{
}
FastZip.ExtractZip(destinationFile, MinecraftFolder + "/temp", String.Empty);
FastZip.CreateZip(MinecraftFolder + "/bin/minecraft.jar", MinecraftFolder + "/temp/Minecraft", true, String.Empty);
if (Directory.Exists(MinecraftFolder + "/temp"))
{
Directory.Delete(MinecraftFolder + "/temp", true);
MessageBox.Show("Instalado correctamente", "Instalador");
}
}
(Sorry for the long code)
If helps i´m trying to extract a .jar, add content at the same folder and repack again.
It doesnt works
Anyone knows because don´t works?
And if know the solution, please tell me
Thanks
EDIT: With this code i want unzip all folders from minecraft.jar, then add some files with overwrite the files and repack again
Since you're not specific about your problem, I'll choose the first issue I see:
string destinationFile = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "system.zip");
You might not have write permissions for the directory this will refer to. This could be one cause of failure. Run your application as administrator, or change the directory you will write to, and if that works, this may very well be your problem.
Please be more specific...
Change this and debug, try to see the error description of the exception:
catch (Exception e1)
{
MessageBox.Show(e1.ToString());
}
The tag shows C#.
If so, your folder separators are wrong.
If in doubt, use Path.Combine.
Here's a version using that (and a few extra variables, so the code is easier to read):
private void Instalarbtn_Click(object sender, RoutedEventArgs e) {
string appFolder = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
string MinecraftFolder = Path.Combine(appFolder, "minecraft");
string destinationFile = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "system.zip");
FastZip FastZip = null;
string minecraftTemp = Path.Combine(MinecraftFolder, "temp");
if (Directory.Exists(minecraftTemp)) {
Directory.Delete(minecraftTemp, true);
}
string minecraftBin = Path.Combine(MinecraftFolder, "bin");
string minecraftTempMinecraft = Path.Combine(minecraftTemp, "Minecraft");
FastZip.ExtractZip(minecraftBin, minecraftTempMinecraft, String.Empty);
string minecraftTempMinecraftMETAINF = Path.Combine(minecraftTempMinecraft, "META-INF");
try {
Directory.Delete(minecraftTempMinecraftMETAINF, true);
} catch (DirectoryNotFoundException e1) {
}
FastZip.ExtractZip(destinationFile, minecraftTemp, String.Empty);
string minecraftBinMinecraftJar = Path.Combine(minecraftBin, "minecraft.jar");
FastZip.CreateZip(minecraftBinMinecraftJar, minecraftTempMinecraft, true, String.Empty);
if (Directory.Exists(minecraftTemp)) {
Directory.Delete(minecraftTemp, true);
MessageBox.Show("Instalado correctamente", "Instalador");
}
}
I have no idea if it works. I do not have or use this FastZip utility, and I did not even bother trying to understand the logic.
You probably have to create a new instance of FastZip, you're currently assigning null to it.
FastZip FastZip = null;
Replace with:
FastZip FastZip = new FastZip();
I recommend you change your FastZip instance's name also (currently called FastZip to more easily recognizable fastZip to distinct it from calling FastZip's (possible) static methods instead of the methods of the actual instance.
FastZip fastZip = new FastZip();
Hi Can you anyone give me a simple example of testing Tesseract OCR
preferably in C#.
I tried the demo found here.
I download the English dataset and unzipped in C drive. and modified the code as followings:
string path = #"C:\pic\mytext.jpg";
Bitmap image = new Bitmap(path);
Tesseract ocr = new Tesseract();
ocr.SetVariable("tessedit_char_whitelist", "0123456789"); // If digit only
ocr.Init(#"C:\tessdata\", "eng", false); // To use correct tessdata
List<tessnet2.Word> result = ocr.DoOCR(image, Rectangle.Empty);
foreach (tessnet2.Word word in result)
Console.WriteLine("{0} : {1}", word.Confidence, word.Text);
Unfortunately the code doesn't work. the program dies at "ocr.Init(..." line. I couldn't even get an exception even using try-catch.
I was able to run the vietocr! but that is a very large project for me to follow. i need a simple example like above.
Ok. I found the solution here
tessnet2 fails to load
the Ans given by Adam
Apparently i was using wrong version of tessdata. I was following the the source page instruction intuitively and that caused the problem.
it says
Quick Tessnet2 usage
Download binary here, add a reference of the assembly Tessnet2.dll to your .NET project.
Download language data definition file here and put it in tessdata directory. Tessdata directory and your exe must be in the
same directory.
After you download the binary, when you follow the link to download the language file, there are many language files. but none of them are right version. you need to select all version and go to next page for correct version (tesseract-2.00.eng)! They should either update download binary link to version 3 or put the the version 2 language file on the first page. Or at least bold mention the fact that this version issue is a big deal!
Anyway I found it.
Thanks everyone.
A simple example of testing Tesseract OCR in C#:
public static string GetText(Bitmap imgsource)
{
var ocrtext = string.Empty;
using (var engine = new TesseractEngine(#"./tessdata", "eng", EngineMode.Default))
{
using (var img = PixConverter.ToPix(imgsource))
{
using (var page = engine.Process(img))
{
ocrtext = page.GetText();
}
}
}
return ocrtext;
}
Info: The tessdata folder must exist in the repository: bin\Debug\
I was able to get it to work by following these instructions.
Download the sample code
Unzip it to a new location
Open ~\tesseract-samples-master\src\Tesseract.Samples.sln (I used Visual Studio 2017)
Install the Tesseract NuGet package for that project (or uninstall/reinstall as I had to)
Uncomment the last two meaningful lines in Tesseract.Samples.Program.cs:
Console.Write("Press any key to continue . . . ");
Console.ReadKey(true);
Run (hit F5)
You should get this windows console output
Try updating the line to:
ocr.Init(#"C:\", "eng", false); // the path here should be the parent folder of tessdata
I had same problem, now its resolved. I have tesseract2, under this folders for 32 bit and 64 bit, I copied files 64 bit folder(as my system is 64 bit) to main folder ("Tesseract2") and under bin/Debug folder. Now my solution is working fine.
In my case I had all these worked except for the correct character recognition.
But you need to consider these few things:
Use correct tessnet2 library
use correct tessdata language version
tessdata should be somewhere out of your application folder where you can put in full path in the init parameter. use ocr.Init(#"c:\tessdata", "eng", true);
Debugging will cause you headache. Then you need to update your app.config
use this. (I can't put the xml code here. give me your email i will email it to you)
hope that this helps
Here's a great working example project; Tesseract OCR Sample (Visual Studio) with Leptonica Preprocessing
Tesseract OCR Sample (Visual Studio) with Leptonica Preprocessing
Tesseract OCR 3.02.02 API can be confusing, so this guides you through including the Tesseract and Leptonica dll into a Visual Studio C++ Project, and provides a sample file which takes an image path to preprocess and OCR. The preprocessing script in Leptonica converts the input image into black and white book-like text.
Setup
To include this in your own projects, you will need to reference the header files and lib and copy the tessdata folders and dlls.
Copy the tesseract-include folder to the root folder of your project. Now Click on your project in Visual Studio Solution Explorer, and go to Project>Properties.
VC++ Directories>Include Directories:
..\tesseract-include\tesseract;..\tesseract-include\leptonica;$(IncludePath)
C/C++>Preprocessor>Preprocessor Definitions:
_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)
C/C++>Linker>Input>Additional Dependencies:
..\tesseract-include\libtesseract302.lib;..\tesseract-include\liblept168.lib;%(AdditionalDependencies)
Now you can include headers in your project's file:
include
include
Now copy the two dll files in tesseract-include and the tessdata folder in Debug to the Output Directory of your project.
When you initialize tesseract, you need to specify the location of the parent folder (!important) of the tessdata folder if it is not already the current directory of your executable file. You can copy my script, which assumes tessdata is installed in the executable's folder.
tesseract::TessBaseAPI *api = new tesseract::TessBaseAPI();
api->Init("D:\tessdataParentFolder\", ...
Sample
You can compile the provided sample, which takes one command line argument of the image path to use. The preprocess() function uses Leptonica to create a black and white book-like copy of the image which makes tesseract work with 90% accuracy. The ocr() function shows the functionality of the Tesseract API to return a string output. The toClipboard() can be used to save text to clipboard on Windows. You can copy these into your own projects.
This worked for me, I had 3-4 more PDF to Text extractor and if one doesnot work the other one will ... tesseract in particular this code can be used on Windows 7, 8, Server 2008 . Hope this is helpful to you
do
{
// Sleep or Pause the Thread for 1 sec, if service is running too fast...
Thread.Sleep(millisecondsTimeout: 1000);
Guid tempGuid = ToSeqGuid();
string newFileName = tempGuid.ToString().Split('-')[0];
string outputFileName = appPath + "\\pdf2png\\" + fileNameithoutExtension + "-" + newFileName +
".png";
extractor.SaveCurrentImageToFile(outputFileName, ImageFormat.Png);
// Create text file here using Tesseract
foreach (var file in Directory.GetFiles(appPath + "\\pdf2png"))
{
try
{
var pngFileName = Path.GetFileNameWithoutExtension(file);
string[] myArguments =
{
"/C tesseract ", file,
" " + appPath + "\\png2text\\" + pngFileName
}; // /C for closing process automatically whent completes
string strParam = String.Join(" ", myArguments);
var myCmdProcess = new Process();
var theProcess = new ProcessStartInfo("cmd.exe", strParam)
{
CreateNoWindow = true,
UseShellExecute = false,
RedirectStandardOutput = true,
RedirectStandardError = true,
WindowStyle = ProcessWindowStyle.Minimized
}; // Keep the cmd.exe window minimized
myCmdProcess.StartInfo = theProcess;
myCmdProcess.Exited += myCmdProcess_Exited;
myCmdProcess.Start();
//if (process)
{
/*
MessageBox.Show("cmd.exe process started: " + Environment.NewLine +
"Process Name: " + myCmdProcess.ProcessName +
Environment.NewLine + " Process Id: " + myCmdProcess.Id
+ Environment.NewLine + "process.Handle: " +
myCmdProcess.Handle);
*/
Process.EnterDebugMode();
//ShowWindow(hWnd: process.Handle, nCmdShow: 2);
/*
MessageBox.Show("After EnterDebugMode() cmd.exe process Exited: " +
Environment.NewLine +
"Process Name: " + myCmdProcess.ProcessName +
Environment.NewLine + " Process Id: " + myCmdProcess.Id
+ Environment.NewLine + "process.Handle: " +
myCmdProcess.Handle);
*/
myCmdProcess.WaitForExit(60000);
/*
MessageBox.Show("After WaitForExit() cmd.exe process Exited: " +
Environment.NewLine +
"Process Name: " + myCmdProcess.ProcessName +
Environment.NewLine + " Process Id: " + myCmdProcess.Id
+ Environment.NewLine + "process.Handle: " +
myCmdProcess.Handle);
*/
myCmdProcess.Refresh();
Process.LeaveDebugMode();
//myCmdProcess.Dispose();
/*
MessageBox.Show("After LeaveDebugMode() cmd.exe process Exited: " +
Environment.NewLine);
*/
}
//process.Kill();
// Waits for the process to complete task and exites automatically
Thread.Sleep(millisecondsTimeout: 1000);
// This works fine in Windows 7 Environment, and not in Windows 8
// Try following code block
// Check, if process is not comletey exited
if (!myCmdProcess.HasExited)
{
//process.WaitForExit(2000); // Try to wait for exit 2 more seconds
/*
MessageBox.Show(" Process of cmd.exe was exited by WaitForExit(); Method " +
Environment.NewLine);
*/
try
{
// If not, then Kill the process
myCmdProcess.Kill();
//myCmdProcess.Dispose();
//if (!myCmdProcess.HasExited)
//{
// myCmdProcess.Kill();
//}
MessageBox.Show(" Process of cmd.exe exited ( Killed ) successfully " +
Environment.NewLine);
}
catch (System.ComponentModel.Win32Exception ex)
{
MessageBox.Show(
" Exception: System.ComponentModel.Win32Exception " +
ex.ErrorCode + Environment.NewLine);
}
catch (NotSupportedException notSupporEx)
{
MessageBox.Show(" Exception: NotSupportedException " +
notSupporEx.Message +
Environment.NewLine);
}
catch (InvalidOperationException invalidOperation)
{
MessageBox.Show(
" Exception: InvalidOperationException " +
invalidOperation.Message + Environment.NewLine);
foreach (
var textFile in Directory.GetFiles(appPath + "\\png2text", "*.txt",
SearchOption.AllDirectories))
{
loggingInfo += textFile +
" In Reading Text from generated text file by Tesseract " +
Environment.NewLine;
strBldr.Append(File.ReadAllText(textFile));
}
// Delete text file after reading text here
Directory.GetFiles(appPath + "\\pdf2png").ToList().ForEach(File.Delete);
Directory.GetFiles(appPath + "\\png2text").ToList().ForEach(File.Delete);
}
}
}
catch (Exception exception)
{
MessageBox.Show(
" Cought Exception in Generating image do{...}while{...} function " +
Environment.NewLine + exception.Message + Environment.NewLine);
}
}
// Delete png image here
Directory.GetFiles(appPath + "\\pdf2png").ToList().ForEach(File.Delete);
Thread.Sleep(millisecondsTimeout: 1000);
// Read text from text file here
foreach (var textFile in Directory.GetFiles(appPath + "\\png2text", "*.txt",
SearchOption.AllDirectories))
{
loggingInfo += textFile +
" In Reading Text from generated text file by Tesseract " +
Environment.NewLine;
strBldr.Append(File.ReadAllText(textFile));
}
// Delete text file after reading text here
Directory.GetFiles(appPath + "\\png2text").ToList().ForEach(File.Delete);
} while (extractor.GetNextImage()); // Advance image enumeration...
Admittedly this is an older question when Tesseract 3 was the version available, but it came up in my search results while looking for a related issue and the question, and other answers, highlight the still valid issue of the difficulty of actually getting Tesseract installed, let alone configuring it to work correctly.
There is a far simpler solution (and using the updated Tesseract 5 engine) which does all the work for you, in IronOcr.
(Disclaimer: I do work for Iron Software, though I feel that others can benefit from this information, particularly as it relates to the question of using Tesseract OCR in C# which IronOcr excels at).
using IronOcr;
var Ocr = new IronTesseract(); // nothing to configure
Ocr.Configuration.WhiteListCharacters = "0123456789"; // If digit only
using (var Input = new OcrInput(#"example.tiff"))
{
OcrResult Result = Ocr.Read(Input);
foreach (var Page in Result.Pages)
{
// Page object
int PageNumber = Page.PageNumber;
string PageText = Page.Text;
int PageWordCount = Page.WordCount;
// null if we dont set Ocr.Configuration.ReadBarCodes = true;
OcrResult.Barcode[] Barcodes = Page.Barcodes;
System.Drawing.Bitmap PageImage = Page.ToBitmap(Input);
int PageWidth = Page.Width;
int PageHeight = Page.Height;
foreach (var Paragraph in Page.Paragraphs)
{
// Pages -> Paragraphs
int ParagraphNumber = Paragraph.ParagraphNumber;
String ParagraphText = Paragraph.Text;
System.Drawing.Bitmap ParagraphImage = Paragraph.ToBitmap(Input);
int ParagraphX_location = Paragraph.X;
int ParagraphY_location = Paragraph.Y;
int ParagraphWidth = Paragraph.Width;
int ParagraphHeight = Paragraph.Height;
double ParagraphOcrAccuracy = Paragraph.Confidence;
OcrResult.TextFlow paragrapthText_direction = Paragraph.TextDirection;
foreach (var Line in Paragraph.Lines)
{
// Pages -> Paragraphs -> Lines
int LineNumber = Line.LineNumber;
String LineText = Line.Text;
System.Drawing.Bitmap LineImage = Line.ToBitmap(Input); ;
int LineX_location = Line.X;
int LineY_location = Line.Y;
int LineWidth = Line.Width;
int LineHeight = Line.Height;
double LineOcrAccuracy = Line.Confidence;
double LineSkew = Line.BaselineAngle;
double LineOffset = Line.BaselineOffset;
foreach (var Word in Line.Words)
{
// Pages -> Paragraphs -> Lines -> Words
int WordNumber = Word.WordNumber;
String WordText = Word.Text;
System.Drawing.Image WordImage = Word.ToBitmap(Input);
int WordX_location = Word.X;
int WordY_location = Word.Y;
int WordWidth = Word.Width;
int WordHeight = Word.Height;
double WordOcrAccuracy = Word.Confidence;
if (Word.Font != null)
{
// Word.Font is only set when using Tesseract Engine Modes rather than LTSM
String FontName = Word.Font.FontName;
double FontSize = Word.Font.FontSize;
bool IsBold = Word.Font.IsBold;
bool IsFixedWidth = Word.Font.IsFixedWidth;
bool IsItalic = Word.Font.IsItalic;
bool IsSerif = Word.Font.IsSerif;
bool IsUnderLined = Word.Font.IsUnderlined;
bool IsFancy = Word.Font.IsCaligraphic;
}
foreach (var Character in Word.Characters)
{
// Pages -> Paragraphs -> Lines -> Words -> Characters
int CharacterNumber = Character.CharacterNumber;
String CharacterText = Character.Text;
System.Drawing.Bitmap CharacterImage = Character.ToBitmap(Input);
int CharacterX_location = Character.X;
int CharacterY_location = Character.Y;
int CharacterWidth = Character.Width;
int CharacterHeight = Character.Height;
double CharacterOcrAccuracy = Character.Confidence;
// Output alternative symbols choices and their probability.
// Very useful for spellchecking
OcrResult.Choice[] Choices = Character.Choices;
}
}
}
}
}
}