示例
[Visual Basic]
Imports System
Imports System.Text
Namespace Convert_Example
Class MyConvertExampleClass
Shared Sub Main()
Dim unicodeString As String = "This string contains the unicode character Pi(?"
' Create two different encodings.
Dim ascii As Encoding = Encoding.ASCII
Dim [unicode] As Encoding = Encoding.Unicode
' Convert the string into a byte[].
Dim unicodeBytes As Byte() = [unicode].GetBytes(unicodeString)
' Perform the conversion from one encoding to the other.
Dim asciiBytes As Byte() = Encoding.Convert([unicode], ascii, unicodeBytes)
' Convert the new byte[] into a char[] and then into a string.
' This is a slightly different approach to converting to illustrate
' the use of GetCharCount/GetChars.
Dim asciiChars(ascii.GetCharCount(asciiBytes, 0, asciiBytes.Length)) As Char
ascii.GetChars(asciiBytes, 0, asciiBytes.Length, asciiChars, 0)
Dim asciiString As New String(asciiChars)
' Display the strings created before and after the conversion.
Console.WriteLine("Original string: {0}", unicodeString)
Console.WriteLine("Ascii converted string: {0}", asciiString)
End Sub
End Class
End Namespace
[C#]
using System;
using System.Text;
namespace ConvertExample
{
class ConvertExampleClass
{
static void Main()
{
string unicodeString = "This string contains the unicode character Pi(\u03a0)";
// Create two different encodings.
Encoding ascii = Encoding.ASCII;
Encoding unicode = Encoding.Unicode;
// Convert the string into a byte[].
byte[] unicodeBytes = unicode.GetBytes(unicodeString);
// Perform the conversion from one encoding to the other.
byte[] asciiBytes = Encoding.Convert(unicode, ascii, unicodeBytes);
// Convert the new byte[] into a char[] and then into a string.
// This is a slightly different approach to converting to illustrate
// the use of GetCharCount/GetChars.
char[] asciiChars = new char[ascii.GetCharCount(asciiBytes, 0, asciiBytes.Length)];
ascii.GetChars(asciiBytes, 0, asciiBytes.Length, asciiChars, 0);
string asciiString = new string(asciiChars);
// Display the strings created before and after the conversion.
Console.WriteLine("Original string: {0}", unicodeString);
Console.WriteLine("Ascii converted string: {0}", asciiString);
}
}
}
[C++]
#using <mscorlib.dll>
using namespace System;
using namespace System::Text;
int main()
{
String* unicodeString = S"This String* contains the unicode character Pi(\u03a0)";
// Create two different encodings.
Encoding * ascii = Encoding::ASCII;
Encoding * unicode = Encoding::Unicode;
// Convert the String* into a Byte->Item[].
Byte unicodeBytes[] = unicode -> GetBytes(unicodeString);
// Perform the conversion from one encoding to the other.
Byte asciiBytes[] = Encoding::Convert(unicode, ascii, unicodeBytes);
// Convert the new Byte into[] a char and[] then into a String*.
// This is a slightly different approach to converting to illustrate
// the use of GetCharCount/GetChars.
Char asciiChars[] = new Char[ascii -> GetCharCount(asciiBytes, 0, asciiBytes -> Length)];
ascii -> GetChars(asciiBytes, 0, asciiBytes->Length, asciiChars, 0);
String* asciiString = new String(asciiChars);
// Display the strings created before and after the conversion.
Console::WriteLine(S"Original String*: {0}", unicodeString);
Console::WriteLine(S"Ascii converted String*: {0}", asciiString);
}
[JScript] 没有可用于 JScript 的示例。若要查看 Visual Basic、C# 或 C++ 示例,请单击页左上角的“语言筛选器”按钮 。
要求
命名空间: System.Text
平台: Windows 98, Windows NT 4.0, Windows ME, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 系列, .NET Framework 精简版 - Windows CE .NET