I have this file, it uses UTF-8 encoding and I am trying to read it. So far, I've used BinaryReader, FileStream, I tried File.ReadAllLines. So far, I'm only getting the first line of the file.
我有这个文件，它使用UTF-8编码，我正在尝试读取它。到目前为止，我已经使用了BinaryReader, FileStream，我尝试了File.ReadAllLines。到目前为止，我只得到文件的第一行。
Here is some samples of what I've tried so far:
以下是我到目前为止所做的一些尝试:
public partial class Form1 : Form
{
private string filename = @"C:\UNICORN\Server\Fil\Users30.mpm";
public Form1()
{
InitializeComponent();
}
private static void clearText(RichTextBox rtb)
{
rtb.Text = "";
}
private void button1_Click(object sender, EventArgs e)
{
// use a binary reader
clearText(richTextBox1);
StringBuilder sb = new StringBuilder();
using(BinaryReader br = new BinaryReader(File.Open(filename, FileMode.Open)))
{
int pos = 0;
int length = (int) br.BaseStream.Length; // length of the file
byte[] bytes = new byte[length];
for(int i = 0; i < length; i++)
{
bytes[i] = br.ReadByte();
}
sb.Append("File Size: " + bytes.Length + "\n");
sb.AppendLine(System.Text.ASCIIEncoding.ASCII.GetString(bytes));
}
richTextBox1.Text = sb.ToString();
}
private void button2_Click(object sender, EventArgs e)
{
// use a binary reader
clearText(richTextBox1);
StringBuilder sb = new StringBuilder();
using(BinaryReader br = new BinaryReader(File.Open(filename, FileMode.Open)))
{
int pos = 0;
int length = (int) br.BaseStream.Length;
sb.Append("File Size: " + length + "\n");
while (pos < length)
{
var v = br.ReadInt32();
sb.Append((char)v + "\n");
pos += sizeof (int);
}
richTextBox1.Text = sb.ToString();
}
}
private void button3_Click(object sender, EventArgs e)
{
// use a binary reader
clearText(richTextBox1);
StringBuilder sb = new StringBuilder();
using (BinaryReader br = new BinaryReader(File.Open(filename, FileMode.Open)))
{
int pos = 0;
int length = (int)br.BaseStream.Length; // length of the file
byte[] bytes = new byte[length];
sb.Append("File Size: " + bytes.Length + "\n");
for (int i = 0; i < length; i++)
{
var b = br.ReadByte();
sb.Append("Byte: " + b + " - " + (char) b + "\n");
}
//sb.AppendLine(System.Text.ASCIIEncoding.ASCII.GetString(bytes));
}
richTextBox1.Text = sb.ToString();
}
private void button4_Click(object sender, EventArgs e)
{
// use a stream reader
clearText(richTextBox1);
StringBuilder sb = new StringBuilder();
using(StreamReader sr = new StreamReader(filename, Encoding.UTF8))
{
sb.Append(sr.ReadLine() + "\n");
}
richTextBox1.Text = sb.ToString();
}
private void button5_Click(object sender, EventArgs e)
{
// use a stream reader
clearText(richTextBox1);
StringBuilder sb = new StringBuilder();
using (StreamReader reader = new StreamReader(File.OpenRead(filename)))
{
while(!reader.EndOfStream)
{
var line = reader.ReadLine();
if(line != null)
{
sb.AppendLine(line);
}
}
}
richTextBox1.Text = sb.ToString();
}
private void button6_Click(object sender, EventArgs e)
{
// use a file stream and a decoder
clearText(richTextBox1);
StringBuilder sb = new StringBuilder();
byte[] byData = new byte[255];
char[] charData = new char[255];
try
{
FileStream aFile = new FileStream(filename, FileMode.Open);
aFile.Seek(55, SeekOrigin.Begin);
aFile.Read(byData, 0, 100);
} catch (Exception ex)
{
sb.Append("ERROR: " + ex.ToString());
}
Decoder d = Encoding.UTF8.GetDecoder();
d.GetChars(byData, 0, byData.Length, charData, 0);
foreach(char c in charData)
{
sb.Append(c + " ");
}
richTextBox1.Text = sb.ToString();
}
private void button7_Click(object sender, EventArgs e)
{
// find the encoding of a file, just trying to find out the encoding with this
clearText(richTextBox1);
StringBuilder sb = new StringBuilder();
using(var r = new StreamReader(filename, detectEncodingFromByteOrderMarks: true))
{
var es = r.CurrentEncoding;
sb.Append("Encoding: " + es);
}
richTextBox1.Text = sb.ToString();
}
private void button8_Click(object sender, EventArgs e)
{
// use File.ReadAllLines()
clearText(richTextBox1);
StringBuilder sb = new StringBuilder();
foreach(var line in File.ReadAllLines(filename, Encoding.UTF8))
{
sb.Append(line.ToString() + "\n");
}
richTextBox1.Text = sb.ToString();
}
}
All of these examples only show me one line of the file. How would you go about reading/parsing the whole file?
所有这些示例只显示了文件的一行。如何读取/解析整个文件?
The file contains a list of users and I'm ultimately trying to read the file to find those user names. Right now, it's only showing the first line of the file which is "UNICORN 3.06".
该文件包含一个用户列表，我最终试图读取该文件以查找这些用户名。现在，它只显示文件的第一行，即“UNICORN 3.06”。
2 个解决方案
#1
1
I believe ReadByte should have a len position in its constructor but:
我认为ReadByte在它的构造函数中应该有一个len位置，但是:
byte[] fileBytes = File.ReadAllBytes(inputFilename);
StringBuilder sb = new StringBuilder();
foreach(byte b in fileBytes)
{
sb.Append(Convert.ToString(b, 2).PadLeft(8, '0')); // adds 8 '0's to left of the string
}
File.WriteAllText(outputFilename, sb.ToString());
#2
2
If you just want the text, the ReadAllText method reads an entire file as utf-8:
如果您只想要文本，ReadAllText方法将整个文件读取为utf-8:
private void button1_Click(object sender, EventArgs e)
{
richTextBox1.Text = File.ReadAllText(filename);
}
If you also want information about the file length, read the file as bytes and decode it as utf-8:
如果您还需要关于文件长度的信息，请以字节的形式读取文件，并将其解码为utf-8:
private void button1_Click(object sender, EventArgs e)
{
byte[] data = File.ReadAllBytes(filename);
richTextBox1.Text = "File size: " + data.Length + "\r\n" + Encoding.UTF8.GetString(data);
}
#1
1
I believe ReadByte should have a len position in its constructor but:
我认为ReadByte在它的构造函数中应该有一个len位置，但是:
byte[] fileBytes = File.ReadAllBytes(inputFilename);
StringBuilder sb = new StringBuilder();
foreach(byte b in fileBytes)
{
sb.Append(Convert.ToString(b, 2).PadLeft(8, '0')); // adds 8 '0's to left of the string
}
File.WriteAllText(outputFilename, sb.ToString());
#2
2
If you just want the text, the ReadAllText method reads an entire file as utf-8:
如果您只想要文本，ReadAllText方法将整个文件读取为utf-8:
private void button1_Click(object sender, EventArgs e)
{
richTextBox1.Text = File.ReadAllText(filename);
}
If you also want information about the file length, read the file as bytes and decode it as utf-8:
如果您还需要关于文件长度的信息，请以字节的形式读取文件，并将其解码为utf-8:
private void button1_Click(object sender, EventArgs e)
{
byte[] data = File.ReadAllBytes(filename);
richTextBox1.Text = "File size: " + data.Length + "\r\n" + Encoding.UTF8.GetString(data);
}