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how to read a compressed file from c# in R

String fileName = "0001.gff";
using (FileStream zipToOpen = new FileStream(fileName, FileMode.Create))
{
using (ZipArchive archive = new ZipArchive(zipToOpen, ZipArchiveMode.Create))
{
ZipArchiveEntry write_entry = archive.CreateEntry(fileName);
using (BinaryWriter writer = new BinaryWriter(write_entry.Open()))
{
writer.Write((Int32)1);
writer.Write((Int32)2);
writer.Write((Int32)3);
writer.Write((Int32)4);
}
}
}
I have created the file myFile in c#, but i want to read it in R. How can i do that?

There is a function called read.gff from the ape package the documentation says to try using
read.gff(file)

I am unable to create new .txt file using StreamWriter Class

Here is my code...
string path = Path.Combine(Environment.GetEnvironmentVariable("USERPROFILE"), "Music", "stream.txt");
StreamWriter sw = new StreamWriter("stream.txt");
sw.WriteLine("i am stream");
sw.Close();

You almost had the solution there:
string path = Path.Combine(Environment.GetEnvironmentVariable("USERPROFILE"),"Music", "stream.txt");
StreamWriter sw = new StreamWriter(path);
sw.WriteLine("i am stream");
sw.Close();
You just had to use the path variable you created :)
After execution remember to look in the Music folder for the stream.txt file

Check This one:-
using System;
using System.IO;
class Test
{
public static void Main()
{
string path = #"c:\temp\MyTest.txt";
if (!File.Exists(path))
{
// Create a file to write to.
using (StreamWriter sw = File.CreateText(path))
{
sw.WriteLine("Hello");
sw.WriteLine("And");
sw.WriteLine("Welcome");
}
}
// Open the file to read from.
using (StreamReader sr = File.OpenText(path))
{
string s = "";
while ((s = sr.ReadLine()) != null)
{
Console.WriteLine(s);
}
}
}
}
Reference

How can i Rewrite File instead of appending using StreamWriter and file stream

I want to rewrite text file using StreamWriter. but when StreamWriter uses stream (like following code), the text will append to file.
StreamWriter sw = new StreamWriter(fstream);
sw.Write(text);
sw.Close();
i must use Stream in code because of that file share limitation

FileMode.Create ll create a new file. If the file excists, it ll show exception. Use FileMode.Truncate.
string txt="your text";
using (FileStream fs = new FileStream(#"C:\Users\rajesh.kumar\Desktop\test123.txt", FileMode.Truncate))
{
using (StreamWriter writer = new StreamWriter(fs))
{
writer.Write("txt");
}
}

If you use file stream, set FileMode:
using (FileStream fs = new FileStream(fileName, FileMode.CreateNew))
{
using (StreamWriter writer = new StreamWriter(fs))
{
writer.Write(textToAdd);
}
}

Read the content of an xml file within a zip package

I am required to read the contents of an .xml file using the Stream (Here the xml file is existing with in the zip package). Here in the below code, I need to get the file path at runtime (here I have hardcoded the path for reference). Please let me know how to read the file path at run time.
I have tried to use string s =entry.FullName.ToString(); but get the error "Could not find the Path". I have also tried to hard code the path as shown below. however get the same FileNotFound error.
string metaDataContents;
using (var zipStream = new FileStream(#"C:\OB10LinuxShare\TEST1\Temp" + "\\"+zipFileName+".zip", FileMode.Open))
using (var archive = new ZipArchive(zipStream, ZipArchiveMode.Read))
{
foreach (var entry in archive.Entries)
{
if (entry.Name.EndsWith(".xml"))
{
FileInfo metadataFileInfo = new FileInfo(entry.Name);
string metadataFileName = metadataFileInfo.Name.Replace(metadataFileInfo.Extension, String.Empty);
if (String.Compare(zipFileName, metadataFileName, true) == 0)
{
using (var stream = entry.Open())
using (var reader = new StreamReader(stream))
{
metaDataContents = reader.ReadToEnd();
clientProcessLogWriter.WriteToLog(LogWriter.LogLevel.DEBUG, "metaDataContents : " + metaDataContents);
}
}
}
}
}
I have also tried to get the contents of the .xml file using the Stream object as shown below. But here I get the error "Stream was not readable".
Stream metaDataStream = null;
string metaDataContent = string.Empty;
using (Stream stream = entry.Open())
{
metaDataStream = stream;
}
using (var reader = new StreamReader(metaDataStream))
{
metaDataContent = reader.ReadToEnd();
}
Kindly suggest, how to read the contents of the xml with in a zip file using Stream and StreamReader by specifying the file path at run time

Your section code snippet is failing because when you reach the end of the first using statement:
using (Stream stream = entry.Open())
{
metaDataStream = stream;
}
... the stream will be disposed. That's the point of a using statment. You should be fine with this sort of code, but load the XML file while the stream is open:
XDocument doc;
using (Stream stream = entry.Open())
{
doc = XDocument.Load(stream);
}
That's to load it as XML... if you really just want the text, you could use:
string text;
using (Stream stream = entry.Open())
{
using (StreamReader reader = new StreamReader(stream))
{
text = reader.ReadToEnd();
}
}
Again, note how this is reading before it hits the end of either using statement.

Here is a sample of how to read a zip file using .net 4.5
private void readZipFile(String filePath)
{
String fileContents = "";
try
{
if (System.IO.File.Exists(filePath))
{
System.IO.Compression.ZipArchive apcZipFile = System.IO.Compression.ZipFile.Open(filePath, System.IO.Compression.ZipArchiveMode.Read);
foreach (System.IO.Compression.ZipArchiveEntry entry in apcZipFile.Entries)
{
if (entry.Name.ToUpper().EndsWith(".XML"))
{
System.IO.Compression.ZipArchiveEntry zipEntry = apcZipFile.GetEntry(entry.Name);
using (System.IO.StreamReader sr = new System.IO.StreamReader(zipEntry.Open()))
{
//read the contents into a string
fileContents = sr.ReadToEnd();
}
}
}
}
}
catch (Exception)
{
throw;
}
}

How to write into an existing textfile in windows phone?

If this is the code in opening a textfile "word.txt" in my solution explorer.
Stream txtStream = Application.GetResourceStream(new Uri("/sample;component/word.txt", UriKind.Relative)).Stream;
using (StreamReader sr = new StreamReader(txtStream))
{
string jon;
while (!sr.EndOfStream)
{
jon = sr.ReadLine();
mylistbox.ItemSource = jon;
}
}
How do i write and append in the existing textfile?

Here is an example
public static void WriteBackgroundSetting(string currentBackground)
{
const string fileName = "RecipeHub.txt";
using (IsolatedStorageFile myIsolatedStorage = IsolatedStorageFile.GetUserStoreForApplication())
{
if(myIsolatedStorage.FileExists(fileName))
myIsolatedStorage.DeleteFile(fileName);
var stream = myIsolatedStorage.CreateFile(fileName);
using (StreamWriter isoStream = new StreamWriter(stream))
{
isoStream.WriteLine(currentBackground);
}
}
}