本文整理汇总了VB.NET中System.IO.Compression.GZipStream.GZipStream构造函数的典型用法代码示例。如果您正苦于以下问题：VB.NET GZipStream构造函数的具体用法？VB.NET GZipStream怎么用？VB.NET GZipStream使用的例子？那么, 这里精选的构造函数代码示例或许可以为您提供帮助。您也可以进一步了解该构造函数所在类System.IO.Compression.GZipStream的用法示例。
在下文中一共展示了GZipStream构造函数的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: Module1
' 导入命名空间
Imports System.IO
Imports System.IO.Compression
Module Module1
Sub Main()
Dim directoryPath As String = "c:\users\public\reports"
Dim directorySelected As DirectoryInfo = New DirectoryInfo(directoryPath)
For Each fileToCompress As FileInfo In directorySelected.EnumerateFiles()
Compress(fileToCompress)
Next
End Sub
Public Sub Compress(fileToCompress As FileInfo)
Using originalFileStream As FileStream = fileToCompress.OpenRead()
If ((File.GetAttributes(fileToCompress.FullName) & FileAttributes.Hidden) <> FileAttributes.Hidden And fileToCompress.Extension <> ".gz") Then
Using compressedFileStream As FileStream = File.Create(fileToCompress.FullName + ".gz")
Using compressionStream As GZipStream = New GZipStream(compressedFileStream, CompressionLevel.Fastest)
originalFileStream.CopyTo(compressionStream)
End Using
End Using
End If
End Using
End Sub
End Module示例2: Module1
' 导入命名空间
Imports System.IO
Imports System.IO.Compression
Module Module1
Private directoryPath As String = ".\temp"
Public Sub Main()
Dim directorySelected As New DirectoryInfo(directoryPath)
Compress(directorySelected)
For Each fileToDecompress As FileInfo In directorySelected.GetFiles("*.gz")
Decompress(fileToDecompress)
Next
End Sub
Public Sub Compress(directorySelected As DirectoryInfo)
For Each fileToCompress As FileInfo In directorySelected.GetFiles()
Using originalFileStream As FileStream = fileToCompress.OpenRead()
If (File.GetAttributes(fileToCompress.FullName) And FileAttributes.Hidden) <> FileAttributes.Hidden And fileToCompress.Extension <> ".gz" Then
Using compressedFileStream As FileStream = File.Create(fileToCompress.FullName & ".gz")
Using compressionStream As New GZipStream(compressedFileStream, CompressionMode.Compress)
originalFileStream.CopyTo(compressionStream)
End Using
End Using
Dim info As New FileInfo(directoryPath & Path.DirectorySeparatorChar & fileToCompress.Name & ".gz")
Console.WriteLine($"Compressed {fileToCompress.Name} from {fileToCompress.Length.ToString()} to {info.Length.ToString()} bytes.")
End If
End Using
Next
End Sub
Private Sub Decompress(ByVal fileToDecompress As FileInfo)
Using originalFileStream As FileStream = fileToDecompress.OpenRead()
Dim currentFileName As String = fileToDecompress.FullName
Dim newFileName = currentFileName.Remove(currentFileName.Length - fileToDecompress.Extension.Length)
Using decompressedFileStream As FileStream = File.Create(newFileName)
Using decompressionStream As GZipStream = New GZipStream(originalFileStream, CompressionMode.Decompress)
decompressionStream.CopyTo(decompressedFileStream)
Console.WriteLine($"Decompressed: {fileToDecompress.Name}")
End Using
End Using
End Using
End Sub
End Module示例3: Module1
' 导入命名空间
Imports System.IO
Imports System.IO.Compression
Module Module1
Sub Main()
Dim directoryPath As String = "c:\users\public\reports"
Dim directorySelected As DirectoryInfo = New DirectoryInfo(directoryPath)
For Each fileToCompress As FileInfo In directorySelected.EnumerateFiles()
Compress(fileToCompress)
Next
End Sub
Public Sub Compress(fileToCompress As FileInfo)
Using originalFileStream As FileStream = fileToCompress.OpenRead()
If ((File.GetAttributes(fileToCompress.FullName) & FileAttributes.Hidden) <> FileAttributes.Hidden And fileToCompress.Extension <> ".gz") Then
Using compressedFileStream As FileStream = File.Create(fileToCompress.FullName + ".gz")
Using compressionStream As GZipStream = New GZipStream(compressedFileStream, CompressionLevel.Fastest, True)
originalFileStream.CopyTo(compressionStream)
End Using
Console.WriteLine(String.Format("file compressed to {0} bytes", compressedFileStream.Length))
End Using
End If
End Using
End Sub
End Module