7/8/2023 0 Comments Vb.net find file sizeUnfortunately, you have no control over the presence of this file. zip file with WinZip or some other zip utility, is a ". Something you'll notice, if you open the. ' The PackagePart contains the information: ' Where to extract the file when it's extracted (partUri) ' The type of content stream (MIME type): (contentType) ' The type of compression: (CompressionOption.Normal) Dim pkgPart As PackagePart = zip.CreatePart(partUri, _ Zip.Close() ' Close the zip file End Sub Private Sub AddToArchive( ByVal zip As Package, _ Refactored code for increased efficiency:ĭim zipPath As String = " C:\TEMP\Compression\myzip.zip" ' Open the zip file if it exists, else create a new one Dim zip As Package = ZipPackage.Open(zipPath, _ĪddToArchive(zip, " C:\TEMP\Compression\Compress Me1.txt")ĪddToArchive(zip, " C:\TEMP\Compression\Compress Me2.txt")ĪddToArchive(zip, " C:\TEMP\Compression\Compress Me3.txt").PkgPart.GetStream().Write(bites, 0, bites.Length) ' Compress and write the bytes to the zip file ' Read all of the bytes from the file to add to the zip file Dim bites As Byte() = File.ReadAllBytes(fileToAdd) ' The PackagePart contains the information: ' Where to extract the file when it's extracted (partUri) ' The type of content stream (MIME type) - (contentType) ' The type of compression to use (CompressionOption.Normal) Dim pkgPart As PackagePart = _ ' A Uri always starts with a forward slash "/" Dim zipUri As String = String.Concat( " /", _ĭim partUri As New Uri(zipUri, UriKind.Relative) ' Replace spaces with an underscore (_) Dim uriFileName As String = fileToAdd.Replace( " ", " _") IO.FileMode.OpenOrCreate, IO.FileAccess.ReadWrite) Dim zipPath As String = " C:\TEMP\Compression\myzip.zip" Dim fileToAdd As String = " C:\TEMP\Compression\Compress Me.txt" ' Open the zip file if it exists, else create a new one Dim zip As Package = ZipPackage.Open(zipPath, _
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