в 16:40, 26 мая 2010

2010-05-26T16:40:16Z

Admin: 1 версия

2010-05-26T12:50:17Z

1 версия

Новая страница

==Encoding.ASCII==

<source lang="vbnet">
Imports System
Imports System.IO
Imports System.Security.Cryptography
Imports System.Text
Imports System.Runtime.Serialization.Formatters
public class MainClass
Shared Public Sub Main(ByVal CmdArgs() As String)
If (CmdArgs.Length <> 1) Then
Console.WriteLine("usage: TestKeyHash <filename>")
End
End If
Dim key() As Byte = Encoding.ASCII.GetBytes("My Secret Key".ToCharArray())
Dim hmac As HMACSHA1 = New HMACSHA1(key)
Dim fs As FileStream = File.OpenRead(CmdArgs(0))
Dim hash() As Byte = hmac.ruputeHash(fs)
Dim b64 As String = Convert.ToBase64String(hash)
fs.Close()
Console.WriteLine(b64)
End Sub
End Class

</source>

==Encoding.Default==

<source lang="vbnet">

Imports System.Text
Imports System.IO

Public Class Tester
Public Shared Sub Main
Dim myFileStream As FileStream
Dim myStreamReader As StreamReader
Dim strRead As String = ""
Dim StreamEncoding As Encoding
Try
StreamEncoding = Encoding.Default
"StreamEncoding = Encoding.Unicode
"StreamEncoding = Encoding.UTF8
"StreamEncoding = Encoding.UTF7
myFileStream = New FileStream("test.txt", FileMode.Open, FileAccess.Read)
myStreamReader = New StreamReader(myFileStream, StreamEncoding)
Console.WriteLine(myStreamReader.ReadToEnd)
myFileStream.Close()
myStreamReader.Close()
Catch EX As IOException
Console.WriteLine(EX.Message)
End Try
End Sub
End Class

</source>

==Encoding.UTF32.GetString==

<source lang="vbnet">
Public Class Tester
Public Shared Sub Main
Dim quote As String = "qqqqqq"
Dim result As New System.Text.StringBuilder
Dim bytesUTF7 As Byte() = System.Text.Encoding.UTF7.GetBytes(quote)
Dim bytesUTF8 As Byte() = System.Text.Encoding.UTF8.GetBytes(quote)
Dim bytesUnicode As Byte() = System.Text.Encoding.Unicode.GetBytes(quote)
Dim bytesUTF32 As Byte() = System.Text.Encoding.UTF32.GetBytes(quote)
result.Append("bytesUTF7.Length = ")
result.AppendLine(bytesUTF7.Length.ToString())
result.Append("bytesUTF8.Length = ")
result.AppendLine(bytesUTF8.Length.ToString())
result.Append("bytesUnicode.Length = ")
result.AppendLine(bytesUnicode.Length.ToString())
result.Append("bytesUTF32.Length = ")
result.AppendLine(bytesUTF32.Length.ToString())
Dim fromUTF7 As String = System.Text.Encoding.UTF7.GetString(bytesUTF7)
Dim fromUTF8 As String = System.Text.Encoding.UTF8.GetString(bytesUTF8)
Dim fromUnicode As String = System.Text.Encoding.Unicode.GetString(bytesUnicode)
Dim fromUTF32 As String = System.Text.Encoding.UTF32.GetString(bytesUTF32)
If (fromUTF7 <> quote) Then _
Throw New Exception("UTF7 Conversion Error")
If (fromUTF8 <> quote) Then _
Throw New Exception("UTF8 Conversion Error")
If (fromUnicode <> quote) Then _
Throw New Exception("Unicode Conversion Error")
If (fromUTF32 <> quote) Then _
Throw New Exception("UTF32 Conversion Error")
Console.WriteLine(result.ToString())
End Sub
End Class

</source>

==Encoding.UTF7.GetBytes==

<source lang="vbnet">
Public Class Tester
Public Shared Sub Main
Dim quote As String = "qqqqqq"
Dim result As New System.Text.StringBuilder
Dim bytesUTF7 As Byte() = System.Text.Encoding.UTF7.GetBytes(quote)
Dim bytesUTF8 As Byte() = System.Text.Encoding.UTF8.GetBytes(quote)
Dim bytesUnicode As Byte() = System.Text.Encoding.Unicode.GetBytes(quote)
Dim bytesUTF32 As Byte() = System.Text.Encoding.UTF32.GetBytes(quote)
result.Append("bytesUTF7.Length = ")
result.AppendLine(bytesUTF7.Length.ToString())
result.Append("bytesUTF8.Length = ")
result.AppendLine(bytesUTF8.Length.ToString())
result.Append("bytesUnicode.Length = ")
result.AppendLine(bytesUnicode.Length.ToString())
result.Append("bytesUTF32.Length = ")
result.AppendLine(bytesUTF32.Length.ToString())
Dim fromUTF7 As String = System.Text.Encoding.UTF7.GetString(bytesUTF7)
Dim fromUTF8 As String = System.Text.Encoding.UTF8.GetString(bytesUTF8)
Dim fromUnicode As String = System.Text.Encoding.Unicode.GetString(bytesUnicode)
Dim fromUTF32 As String = System.Text.Encoding.UTF32.GetString(bytesUTF32)
If (fromUTF7 <> quote) Then _
Throw New Exception("UTF7 Conversion Error")
If (fromUTF8 <> quote) Then _
Throw New Exception("UTF8 Conversion Error")
If (fromUnicode <> quote) Then _
Throw New Exception("Unicode Conversion Error")
If (fromUTF32 <> quote) Then _
Throw New Exception("UTF32 Conversion Error")
Console.WriteLine(result.ToString())
End Sub
End Class

</source>

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VB.Net by API/System.Text/Encoding - История изменений

в 16:40, 26 мая 2010

Admin: 1 версия