Forcefully Replacing Existing Files during Extracting File using System.IO.Compression?

Question

I am using the following code to extract all files in a folder

        using (ZipArchive archive = new ZipArchive(zipStream))         {             archive.ExtractToDirectory(location);         } 

But if one file exist then it throws an exception. Is there is any way to tell the Compression API to replace the existing files.

I found one way is to get all the file names first then check whether file exist and delete it. But this is somehow very costly for me.

Answer 1

I have created an extension. any comment to it improve will be appreciated,

public static class ZipArchiveExtensions {     public static void ExtractToDirectory(this ZipArchive archive, string destinationDirectoryName, bool overwrite)     {         if (!overwrite)         {             archive.ExtractToDirectory(destinationDirectoryName);             return;         }          DirectoryInfo di = Directory.CreateDirectory(destinationDirectoryName);         string destinationDirectoryFullPath = di.FullName;          foreach (ZipArchiveEntry file in archive.Entries)         {             string completeFileName = Path.GetFullPath(Path.Combine(destinationDirectoryFullPath, file.FullName));              if (!completeFileName.StartsWith(destinationDirectoryFullPath, StringComparison.OrdinalIgnoreCase))             {                 throw new IOException("Trying to extract file outside of destination directory. See this link for more info: https://snyk.io/research/zip-slip-vulnerability");             }              if (file.Name == "")             {// Assuming Empty for Directory                 Directory.CreateDirectory(Path.GetDirectoryName(completeFileName));                 continue;             }             file.ExtractToFile(completeFileName, true);         }     } }