(C#) Unzip an AES Encrypted Text File directly into a String Variable

A common need is to unzip from an AES encrypted Zip archive directly into a string variable, such that the unencrypted file never resides on disk, even temporarily. This example shows how to do it.

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.Zip zip = new Chilkat.Zip();

// This example opens a WinZip-compatible AES encrypted
// .zip that contains a single file: hamlet.xml.

// It decrypts and unzips hamlet.xml directly into a string
// variable.
zip.SetPassword("secret");
bool success = zip.OpenZip("qa_data/hamlet.zip");
if (success != true) {
    Debug.WriteLine(zip.LastErrorText);
    return;
}

Chilkat.ZipEntry entry = zip.GetEntryByName("hamlet.xml");
if (zip.LastMethodSuccess == false) {
    Debug.WriteLine("Failed to find entry in zip");
    return;
}

// lineEndingBehavior:
// 0 = leave unchanged.
// 1 = convert all to bare LF's
// 2 = convert all to CRLF's
int lineEndingBehavior = 0;
string srcCharset = "utf-8";
string xmlText = entry.UnzipToString(lineEndingBehavior,srcCharset);
Debug.WriteLine(xmlText);