в 15:31, 26 мая 2010

2010-05-26T15:31:53Z

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2010-05-26T12:20:28Z

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==Demonstrate MemoryStream.==

<source lang="csharp">using System;
using System.IO;

class MainClass {
public static void Main() {
byte[] storage = new byte[255];

MemoryStream memstrm = new MemoryStream(storage);

StreamWriter memwtr = new StreamWriter(memstrm);
StreamReader memrdr = new StreamReader(memstrm);

for(int i=0; i < 10; i++)
memwtr.WriteLine("byte [" + i + "]: " + i);

memwtr.WriteLine(".");

memwtr.Flush();

Console.WriteLine("Reading from storage directly: ");

foreach(char ch in storage) {
if (ch == ".") break;
Console.Write(ch);
}

Console.WriteLine("\nReading through memrdr: ");

memstrm.Seek(0, SeekOrigin.Begin); // reset file pointer

string str = memrdr.ReadLine();
while(str != null) {
Console.WriteLine(str);
str = memrdr.ReadLine();
if(str.rupareTo(".") == 0) break;
}
}
}</source>
<pre class=codeResult>Reading from storage directly:
byte [0]: 0
byte [1]: 1
byte [2]: 2
byte [3]: 3
byte [4]: 4
byte [5]: 5
byte [6]: 6
byte [7]: 7
byte [8]: 8
byte [9]: 9
Reading through memrdr:
byte [0]: 0
byte [1]: 1
byte [2]: 2
byte [3]: 3
byte [4]: 4
byte [5]: 5
byte [6]: 6
byte [7]: 7
byte [8]: 8
byte [9]: 9</pre>

==MemoryStream: Write bytes and dump to a file==

<source lang="csharp">using System;
using System.IO;
public class MainClass
{
public static int Main(string[] args)
{
MemoryStream myMemStream = new MemoryStream();
myMemStream.Capacity = 256;
for(int i = 0; i < 256; i++)
myMemStream.WriteByte((byte)i);
myMemStream.Position = 0;
for(int i = 0; i < 256; i++)
Console.Write(myMemStream.ReadByte());
Console.WriteLine();
FileStream dumpFile = new FileStream("Dump.dat", FileMode.Create, FileAccess.ReadWrite);
myMemStream.WriteTo(dumpFile);
byte[] bytesinMemory = myMemStream.ToArray();
myMemStream.Close();
for(int i = 0; i < bytesinMemory.Length; i++)
Console.Write(bytesinMemory[i]);
return 0;
}
}</source>
<pre class=codeResult>0123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354
5556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021
0310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513
6137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169
1701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022
0320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523
6237238239240241242243244245246247248249250251252253254255
0123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354
5556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021
0310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513
6137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169
1701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022
0320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523
6237238239240241242243244245246247248249250251252253254255</pre>

==Read data in FileStream into MemoryStream==

<source lang="csharp">using System;
using System.Windows.Forms;
using System.IO;
class MainClass
{

public static void SaveMemoryStream(MemoryStream ms, string FileName)
{
FileStream outStream = File.OpenWrite(FileName);
ms.WriteTo(outStream);
outStream.Flush();
outStream.Close();
}
public static void Main()
{
FileStream inStream = File.OpenRead("c:\\text.txt");
MemoryStream storeStream = new MemoryStream();
storeStream.SetLength(inStream.Length);
inStream.Read(storeStream.GetBuffer(), 0, (int)inStream.Length);
storeStream.Flush();
inStream.Close();
SaveMemoryStream(storeStream, "C:\\text.txt" + ".bak");
storeStream.Close();
}
}</source>

==Save the MemoryStream as a file==

<source lang="csharp">using System;
using System.Windows.Forms;
using System.IO;
class MainClass
{

public static void SaveMemoryStream(MemoryStream ms, string FileName)
{
FileStream outStream = File.OpenWrite(FileName);
ms.WriteTo(outStream);
outStream.Flush();
outStream.Close();
}
public static void Main()
{
FileStream inStream = File.OpenRead("c:\\text.txt");
MemoryStream storeStream = new MemoryStream();
storeStream.SetLength(inStream.Length);
inStream.Read(storeStream.GetBuffer(), 0, (int)inStream.Length);
storeStream.Flush();
inStream.Close();
SaveMemoryStream(storeStream, "C:\\text.txt" + ".bak");
storeStream.Close();
}
}</source>

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в 15:31, 26 мая 2010

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