VB.NET 压缩解压字符串并以字符串格式返回
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VB.NET compress decompress string and return in string format
提问by Daniel Valland
I need a vb.net function for compressing/decompressing a string, and return the result as a string. I found these two functions:
我需要一个用于压缩/解压缩字符串的 vb.net 函数，并将结果作为字符串返回。我找到了这两个函数：
//Compress
Dim mem As New IO.MemoryStream
Dim gz As New System.IO.Compression.GZipStream(mem, IO.Compression.CompressionMode.Compress)
Dim sw As New IO.StreamWriter(gz)
sw.WriteLine("hello compression")
sw.Close()
//Decompress
Dim mem2 As New IO.MemoryStream(mem.ToArray)
gz = New System.IO.Compression.GZipStream(mem2, IO.Compression.CompressionMode.Decompress)
Dim sr As New IO.StreamReader(gz)
MsgBox(sr.ReadLine)
sr.Close()
But how do I make them return the compressed string as a string? thanks.
但是如何让他们将压缩字符串作为字符串返回？谢谢。
采纳答案by Andrew Cooper
You would need to Base64 encode the compressed byte array to get a string representation.
您需要对压缩的字节数组进行 Base64 编码以获得字符串表示形式。
Dim compressed As String = Convert.ToBase64String(mem.ToArray())
The decompressed string can just be read from the StreamReader.
解压后的字符串只能从StreamReader.
Dim decompressed As String = sr.ReadLine()
