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error in text direction when i try to extract text from arabic pdf file using itextsharp c#

i have problem in my code
i am trying to read text from arabic rtl file using itextsharp
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using iTextSharp;
using iTextSharp.text;
using iTextSharp.text.pdf;
using iTextSharp.text.pdf.parser;
namespace Masmo3
{
public partial class FrmMain : Form
{
string book = null;
public FrmMain()
{
InitializeComponent();
}
private void openFileDialog1_FileOk(object sender, CancelEventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
BtnOpen.Enabled = false;
book = null;
using(OpenFileDialog Ofd = new OpenFileDialog() {Filter= "PDF files (*.pdf)|*.pdf|txt files (*.txt)|*.txt",ValidateNames= true, Multiselect= false})
{
if (Ofd.ShowDialog() == DialogResult.OK)
{
iTextSharp.text.pdf.PdfReader reader = new iTextSharp.text.pdf.PdfReader(Ofd.FileName);
StringBuilder sb = new StringBuilder();
for (int i = 1; i <= reader.NumberOfPages; i++)
{
sb.Append(PdfTextExtractor.GetTextFromPage(reader, i));
book = sb.ToString();
}
reader.Close();
}
}
BtnOpen.Enabled = true;
}
}
}
this code show my text like "ﻢﯿﺣﺮﻟا ﻦﻤﺣﺮﻟا ﷲ ﻢﺴﺑ" its wrong because its rtl language the correct way "بسم الله الرحمن الرحيم"
what i can do to get correct text direction ?

"بسم الله الرحمن الرحيم"
please use ColumnText object to set the DIrection to be RTL
CT.RunDirection = PdfWriter.RUN_DIRECTION_RTL;
Good luck bro

How to use C# to convert any file to some other arbitrary format(.rjb) & recover to original format?

This is my first question in Stackoverflow
I am trying to convert some files(.txt,.mp3,.mp4,.pdf,.png,.exe etc.) in a folder to a format .rjb, created by me. And I also want to recover the original files from the .rjb files. But every files other than .txt files get corrupted. Please help me, to accomplish this. The below code is what I am using.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace rjbformat
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
if (textBox1.Text != "")
{
try
{
//string data = Convert.ToString(File.ReadAllBytes(textBox1.Text));
// string datas = File.ReadAllText(textBox1.Text);
//string dat = File.ReadAllText(textBox1.Text, Encoding.ASCII);
//var dataS = Convert.ToString(datas);
using (StreamWriter sw = new StreamWriter(textBox1.Text + ".rjb"))
{
sw.Write(textBox3.Text);
}
}
catch (Exception)
{
MessageBox.Show("Specified Input file DOESNOT EXIST!", "Error", MessageBoxButtons.OK,
MessageBoxIcon.Error);
//throw;
}
}
else
{
MessageBox.Show("Please select Input file");
}
}
private void button2_Click(object sender, EventArgs e)
{
openFileDialog1.Title = "Open Text File (Rajib)";
openFileDialog1.Filter = "Text Files(*.txt;*.cod;*.ubc)|*.txt;*.cod;*.ubc";
openFileDialog1.Filter = "All Files(*.*)|*.*";
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
textBox1.Text = openFileDialog1.FileName;
textBox2.Text = openFileDialog1.FileName + ".rjb";
File.Copy(textBox1.Text, textBox2.Text,true);
FileAccess.ReadWrite.ToString(textBox1.Text);
var lines = File.ReadAllLines(textBox1.Text);
/* foreach (string line in lines)
{
textBox3.Text += line+"\r\n";
}*/
File.AppendAllLines(textBox2.Text, lines);
// FileStream fs = new FileStream(textBox1.Text, FileMode.Open);
// int hexIn;
// String hex = "";
// for (int i = 0; i<50/*(hexIn = fs.ReadByte()) != -1*/; i++)
// {
// hex = string.Format("{0:X2}", fs.ReadByte());
// // int bina = fs.ReadByte();
// textBox3.Text += hex;
//}
}
}
}
}

If all you are doing is storing one or more files into your .rjb format and want to get them back intact, this sounds a lot like creating archive files. In that case, you may want to consider just using a standard zip file and customize the extension.
Here's an example using the ZipArchive class:
using System.IO.Compression;
namespace CustomZip
{
class Program
{
static void Main(string[] args)
{
string startPath = #"c:\example\start";
string zipPath = #"c:\example\result.rjb";
string extractPath = #"c:\example\extract";
ZipFile.CreateFromDirectory(startPath, zipPath);
ZipFile.ExtractToDirectory(zipPath, extractPath);
}
}
}
You will need to add a reference to System.IO.Compression.FileSystem to your project.

How to display image in Excel

i am doing a WPF application to import my image from my folder into excel using c#. I had been successful with using microsoft excel but i would like to know if it is possible to view the file if the user does not have microsoft excel installed? Below is the code which i tried converting the image to a String but it does not display in the excel.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using ExcelOpenXMLBasics;
//----------------------------------
using System.Configuration;
using System.Data.SqlClient;
using System.Data;
using Microsoft.Win32;
//----------------------------------
namespace WpfApplication2
{
public partial class Window2 : Window
{
List<String> stringValue;
List<int> intValue;
string Imagefile;
public Window2()
{
InitializeComponent();
System.Threading.Thread.CurrentThread.CurrentUICulture = System.Threading.Thread.CurrentThread.CurrentCulture;
System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("en-US");
}
private void btnCreateBasicWorkbook_Click(object sender, RoutedEventArgs e)
{
this.CreateBasicWorkbook("try7.xlsx", true);
}
private void CreateBasicWorkbook(string workbookName, bool createStylesInCode)
{
#region select file
OpenFileDialog fileChooser = new OpenFileDialog();
fileChooser.Filter = "image files (*.png)|*.png|All files (*.*)|*.*";
fileChooser.InitialDirectory = #"C:\";
fileChooser.Title = "Check if the image has been saved into PC disk";
bool? result = fileChooser.ShowDialog();
Imagefile = fileChooser.FileName;
#endregion
#region 1
DocumentFormat.OpenXml.Packaging.SpreadsheetDocument spreadsheet;
DocumentFormat.OpenXml.Spreadsheet.Worksheet worksheet;
System.IO.StreamReader styleXmlReader;
string styleXml;
spreadsheet = Excel.CreateWorkbook(workbookName);
if (spreadsheet == null)
{
return;
}
if (createStylesInCode)
{
Excel.AddBasicStyles(spreadsheet);
}
else
{
using (styleXmlReader = new System.IO.StreamReader("PredefinedStyles.xml"))
{
styleXml = styleXmlReader.ReadToEnd();
Excel.AddPredefinedStyles(spreadsheet, styleXml);
}
}
Excel.AddWorksheet(spreadsheet, "Test 1");
worksheet = spreadsheet.WorkbookPart.WorksheetParts.First().Worksheet;
#endregion
//BitmapImage _Image = new BitmapImage(new Uri(#"C:\Users\ifcdu1\Desktop\limin.PNG"));
//string _img = _Image.ToString();
//#"C:\Users\ifcdu1\Desktop\limin.PNG"
//byte imageArray1 = File.ReadAllBytes(#"C:\Users\ifcdu1\Desktop\limin.PNG");
byte[] imageArray = System.IO.File.ReadAllBytes(Imagefile);
string base64ImageRepresentation = Convert.ToBase64String(imageArray);
//string test = Imagefile;
//byte[] bytes = System.Text.ASCIIEncoding.ASCII.GetBytes(test);
//string base64String = System.Convert.ToBase64String(bytes);
//Console.WriteLine("Base 64 string: " + base64String);
Excel.SetCellValue(spreadsheet, worksheet, 1, 1, base64ImageRepresentation, true);
#region 2
worksheet.Save();
spreadsheet.Close();
System.Diagnostics.Process.Start(workbookName);
#endregion
}
}
}

So if the user has Excel the image will show. Make it so that if the image does not show (there is no Excel) the image opens in something else like pain, or whatever program you want the image to be in.

C# Using Youtube API - How do I check the last time a particular user uploaded a video to Youtube?

I know how to upload a video to Youtube using Youtube API within C#
But I'd like to use the Youtube API to return a date when a particular user last uploaded a video.
My code for uploading a video using C# is below, but I really don't know how to do the above???
Form1.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Google.GData.Client;
using Google.YouTube;
using Google.GData.Extensions.MediaRss;
using Google.GData.YouTube;
using Google.GData.Extensions.Location;
namespace UploadLimit
{
public partial class Form1 : Form
{
string key = "somegarbage";
string appName = "SlowUpload";
string username = "blarg";
string password = "blarg";
public Form1()
{
InitializeComponent();
}
private void btnBrowse_Click(object sender, EventArgs e)
{
OpenFileDialog dialog = new OpenFileDialog();
DialogResult result = dialog.ShowDialog();
if (result == System.Windows.Forms.DialogResult.OK)
txtFile.Text = dialog.FileName;
}
private void btnUpload_Click(object sender, EventArgs e)
{
YouTubeRequestSettings settings = new YouTubeRequestSettings(appName, key, username, password);
YouTubeRequest request = new YouTubeRequest(settings);
Video newVideo = new Video();
newVideo.Title = "My Test Movie";
newVideo.Tags.Add(new MediaCategory("Autos", YouTubeNameTable.CategorySchema));
newVideo.Keywords = "cars, funny";
newVideo.Description = "My description";
newVideo.YouTubeEntry.Private = false;
newVideo.Tags.Add(new MediaCategory("mydevtag, anotherdevtag",
YouTubeNameTable.DeveloperTagSchema));
newVideo.YouTubeEntry.Location = new GeoRssWhere(37, -122);
// alternatively, you could just specify a descriptive string
// newVideo.YouTubeEntry.setYouTubeExtension("location", "Mountain View, CA");
newVideo.YouTubeEntry.MediaSource = new MediaFileSource(txtFile.Text, "video/quicktime");
Video createdVideo = request.Upload(newVideo);
}
private void Form1_Load(object sender, EventArgs e)
{
}
}
}
Program.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace UploadLimit
{
static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
}
}

You can get all the user's videos and get the latest date:
var videos = new YouTubeRequest().GetVideoFeed(userId).Entries
DateTime lastUploadDate = videos.Max(video => video.YouTubeEntry.Published)
To get the actual video's title:
var lastVideo = videos.Where(video => video.YouTubeEntry.Published == lastUploadDate).First();
var name = lastVideo.Title

Streamreader problems

I'm a real noob to C# trying to write a small XML replacer program based on a short code a friend of mine used in one of his apps..
I'm having trouble with this line:
StreamReader sr = new StreamReader(textBox1.Text);
I get an error: "Empty path name is not legal."
why doesn't this work?
the code is:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
namespace ReplaceMe
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
StreamReader sr = new StreamReader(textBox1.Text);
StreamWriter sw = new StreamWriter(textBox1.Text.Replace(".", "_new."));
string cur = "";
do
{
cur = sr.ReadLine();
cur = cur.Replace(textBox2.Text, textBox3.Text);
sw.WriteLine(cur);
}
while (!sr.EndOfStream);
sw.Close();
sr.Close();
MessageBox.Show("Finished, the new file is in the same directory as the old one");
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
this.textBox1.Text = openFileDialog1.FileName;
}
}
}
}
Thanks in advance :)

That is because your textBox1 doesn't contain text at the moment you create StreamReader. You set textBox1 text in button1_Click, so you have to create StreamReader in that method.

You should make sure the file exists before you try to access it, it seems you deliver an empty string as a filename.
try accessing the file only when:
if (File.Exists(textBox1.Text))
{
//Your Code...
}

the value of textbox1 is null or empty. also, if you want to manipulate xml look into the objects of the System.Xml namespace. These objects are designed specifically for working with XML.

it's because you're setting an empty string in StreamReader constructor.
I recommend you do a simple validation before read file.
as this:
string fileName = textBox1.Text;
if(String.IsNullOrEmpty(fileName)) {
//textbox is empty
} else if(File.Exists(fileName)) {
//file not exists
} else {
// read it
StreamReader sr = new StreamReader(fileName);
//..
}
Note: it is not right way to manipulate xml files.
check out the XML documentation for more info.