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Visual C++ .NET/File Directory/StreamWriter - История изменений
2026-04-16T05:49:14Z
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http://www.nfex.ru/index.php?title=Visual_C%2B%2B_.NET/File_Directory/StreamWriter&diff=3668&oldid=prev
в 15:31, 26 мая 2010
2010-05-26T15:31:02Z
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Admin: 1 версия
2010-05-26T12:05:50Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>==Create StreamWriter from file name==<br />
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<source lang="csharp"> <br />
#include "stdafx.h"<br />
using namespace System;<br />
using namespace System::IO;<br />
int main()<br />
{<br />
StreamWriter^ sw = gcnew StreamWriter("textfile.txt");<br />
sw->WriteLine("asdf");<br />
sw->Flush();<br />
sw->Close();<br />
StreamWriter^ sw2 = File::CreateText("newtextfile.txt");<br />
StreamReader^ sr = gcnew StreamReader("textfile.txt");<br />
String^ line;<br />
while ((line = sr->ReadLine()) != nullptr)<br />
{<br />
Console::WriteLine(line);<br />
}<br />
}<br />
<br />
</source><br />
<br />
<br />
==Read a text file with StreamReader==<br />
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<br />
<source lang="csharp"> <br />
#include "stdafx.h"<br />
using namespace System;<br />
using namespace System::IO;<br />
void main()<br />
{<br />
array<String^>^ data = gcnew array<String^> {"This is ", "a test!", "This is only a test." };<br />
StreamWriter ^sw = gcnew StreamWriter(gcnew FileStream("file.txt",FileMode::Create, FileAccess::Write, FileShare::None));<br />
for (int i = 0; i < data->Length-1; i++){<br />
sw->Write(data[i]);<br />
}<br />
sw->WriteLine();<br />
sw->WriteLine(data[2]);<br />
sw->Close();<br />
StreamReader ^sr = File::OpenText("file.txt");<br />
String^ in = sr->ReadLine();<br />
Console::WriteLine(in);<br />
Console::WriteLine(sr->ReadToEnd());<br />
sw->Close();<br />
}<br />
<br />
</source><br />
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==Read text file to the end==<br />
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<br />
<source lang="csharp"> <br />
#include "stdafx.h"<br />
using namespace System;<br />
using namespace System::IO;<br />
void main()<br />
{<br />
array<String^>^ data = gcnew array<String^> {"This is ", "a test!", "This is only a test." };<br />
StreamWriter ^sw = gcnew StreamWriter(gcnew FileStream("file.txt",FileMode::Create, FileAccess::Write, FileShare::None));<br />
for (int i = 0; i < data->Length-1; i++){<br />
sw->Write(data[i]);<br />
}<br />
sw->WriteLine();<br />
sw->WriteLine(data[2]);<br />
sw->Close();<br />
StreamReader ^sr = File::OpenText("file.txt");<br />
String^ in = sr->ReadLine();<br />
Console::WriteLine(in);<br />
Console::WriteLine(sr->ReadToEnd());<br />
sw->Close();<br />
}<br />
<br />
</source><br />
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<br />
==Write line to text file with StreamWriter==<br />
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<br />
<br />
<source lang="csharp"> <br />
#include "stdafx.h"<br />
using namespace System;<br />
using namespace System::IO;<br />
int main()<br />
{<br />
StreamWriter^ sw = gcnew StreamWriter("textfile.txt");<br />
sw->WriteLine("asdf");<br />
sw->Flush();<br />
sw->Close();<br />
StreamWriter^ sw2 = File::CreateText("newtextfile.txt");<br />
StreamReader^ sr = gcnew StreamReader("textfile.txt");<br />
String^ line;<br />
while ((line = sr->ReadLine()) != nullptr)<br />
{<br />
Console::WriteLine(line);<br />
}<br />
}<br />
<br />
</source><br />
<br />
<br />
==Write to a text file with StreamWriter==<br />
<br />
<br />
<br />
<source lang="csharp"> <br />
#include "stdafx.h"<br />
using namespace System;<br />
using namespace System::IO;<br />
void main()<br />
{<br />
array<String^>^ data = gcnew array<String^> {"This is ", "a test!", "This is only a test." };<br />
StreamWriter ^sw = gcnew StreamWriter(gcnew FileStream("file.txt",FileMode::Create, FileAccess::Write, FileShare::None));<br />
for (int i = 0; i < data->Length-1; i++){<br />
sw->Write(data[i]);<br />
}<br />
sw->WriteLine();<br />
sw->WriteLine(data[2]);<br />
sw->Close();<br />
StreamReader ^sr = File::OpenText("file.txt");<br />
String^ in = sr->ReadLine();<br />
Console::WriteLine(in);<br />
Console::WriteLine(sr->ReadToEnd());<br />
sw->Close();<br />
}<br />
<br />
</source></div>
Admin