Setting password to a zip file

[csKanna]

Hi,

I have an existing zip file. I would like to set a password to my existing zip file. I know how to zip, unzip using SharpZipLib. I am wondering, Is there a way to set a password without extracting and re-creating the zip file with password?

Let me know.

Thanks

[dee-u]

I am not sure but it this what you are looking for?

[csKanna]

I know that already. As i said in my OP, i know how to extract and rezip the files with password. What i am looking for is, is there anyway to set the password for existing zip file without extracting it?

[dee-u]

I thought but cannot test it may work by modifying the sample code in the link like this.

using ICSharpCode.SharpZipLib.Zip;

public void UpdateExistingZip() {
	ZipFile zipFile = new ZipFile(@"c:\temp\existing.zip");

	// Must call BeginUpdate to start, and CommitUpdate at the end.
	zipFile.BeginUpdate();

	zipFile.Password = "whatever"; // Only if a password is wanted on the new entry
	
	// Both CommitUpdate and Close must be called.
	zipFile.CommitUpdate();
	zipFile.Close();
}