我如何使用File.ReadAllBytes在块 [英] How do I use File.ReadAllBytes In chunks
本文介绍了我如何使用File.ReadAllBytes在块的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我用这code
字符串LOCATION1 = textBox2.Text;
字节[]字节= File.ReadAllBytes(LOCATION1);
字符串文本=(Convert.ToBase64String(字节));
richTextBox1.Text =文本;
但是当我使用的文件太大,我得到了内存的异常。
我想在块使用 File.ReadAllBytes
。我见过code这样的低于
System.IO.FileStream FS =新System.IO.FileStream(textBox2.Text,System.IO.FileMode.Open);
字节[] buf中=新的字节[BUF_SIZE]
INT读取动作;//一次读取文件的一种千字节。
做
{
读取动作= fs.Read(BUF,0,BUF_SIZE);
//'BUF'包含读取文件的最后1024字节。}而(读取动作== BUF_SIZE);fs.Close();}
但我不知道如何实际转换读取动作
成字节数组,我将转换为文本。
编辑:答案找到。这里是code!
私人无效的button1_Click(对象发件人,EventArgs的发送)
{
const int的MAX_BUFFER = 2048;
字节[]缓冲区=新的字节[MAX_BUFFER]
INT读取动作;
使用(System.IO.FileStream FILESTREAM =新的FileStream(textBox2.Text,FileMode.Open,FileAccess.Read))
而((读取动作= fileStream.Read(缓冲,0,MAX_BUFFER))!= 0)
{
字符串文本=(Convert.ToBase64String(缓冲区));
textBox1.Text =文本; }}
要改变这是文本格式的读取字节,创建一个新的字节,使其平等
(Convert.FromBase64String(文本))。谢谢大家!
解决方案
私人无效的button1_Click(对象发件人,EventArgs的发送)
{
const int的MAX_BUFFER = 2048;
字节[]缓冲区=新的字节[MAX_BUFFER]
INT读取动作;
使用(System.IO.FileStream FILESTREAM =新的FileStream(textBox2.Text,FileMode.Open,FileAccess.Read))
而((读取动作= fileStream.Read(缓冲,0,MAX_BUFFER))!= 0)
{
字符串文本=(Convert.ToBase64String(缓冲区));
textBox1.Text =文本; }
}
I am using this code
string location1 = textBox2.Text;
byte[] bytes = File.ReadAllBytes(location1);
string text = (Convert.ToBase64String(bytes));
richTextBox1.Text = text;
But when I use a file that is too big I get out of memory exception.
I want to use File.ReadAllBytes
in chunks. I have seen code like this below
System.IO.FileStream fs = new System.IO.FileStream(textBox2.Text, System.IO.FileMode.Open);
byte[] buf = new byte[BUF_SIZE];
int bytesRead;
// Read the file one kilobyte at a time.
do
{
bytesRead = fs.Read(buf, 0, BUF_SIZE);
// 'buf' contains the last 1024 bytes read of the file.
} while (bytesRead == BUF_SIZE);
fs.Close();
}
But I don't know how to actually convert the bytesRead
into a byte array which I will convert to text.
EDIT: Answer found. Here is the code!
private void button1_Click(object sender, EventArgs e)
{
const int MAX_BUFFER = 2048;
byte[] Buffer = new byte[MAX_BUFFER];
int BytesRead;
using (System.IO.FileStream fileStream = new FileStream(textBox2.Text, FileMode.Open, FileAccess.Read))
while ((BytesRead = fileStream.Read(Buffer, 0, MAX_BUFFER)) != 0)
{
string text = (Convert.ToBase64String(Buffer));
textBox1.Text = text;
}
}
To change the readable bytes which are in text format, create a new byte and make it equal (Convert.FromBase64String(Text)). Thanks everyone!
解决方案
private void button1_Click(object sender, EventArgs e)
{
const int MAX_BUFFER = 2048;
byte[] Buffer = new byte[MAX_BUFFER];
int BytesRead;
using (System.IO.FileStream fileStream = new FileStream(textBox2.Text, FileMode.Open, FileAccess.Read))
while ((BytesRead = fileStream.Read(Buffer, 0, MAX_BUFFER)) != 0)
{
string text = (Convert.ToBase64String(Buffer));
textBox1.Text = text;
}
}
这篇关于我如何使用File.ReadAllBytes在块的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文