C#

Replace/Update a FIle in a .zip

See more Zip Examples

Demonstrates how to replace/update a file from a .zip. Note: This requires the entire .zip to be rewritten. C#

bool success = false;

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

// First prepare a .zip and write it..
Chilkat.Zip zip = new Chilkat.Zip();

zip.NewZip("qa_output/abc.zip");

// Add some files..
string charset = "utf-8";
zip.AddString("a.txt","aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",charset);
zip.AddString("b.txt","bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",charset);
zip.AddString("c.txt","cccccccccccccccccccccccccccccccccccc",charset);

// Write to qa_output/abc.zip
// This .zip contains three files: a.txt, b.txt, and c.txt
success = zip.WriteZipAndClose();

// -------------------------------------------------------------------
// Open abc.zip, replace the content of the "b.txt" entry with something else, and re-write.
Chilkat.Zip zip2 = new Chilkat.Zip();
zip2.OpenZip("qa_output/abc.zip");

Chilkat.ZipEntry entry = new Chilkat.ZipEntry();
if (zip2.EntryOf("b.txt",entry) == true) {
    entry.ReplaceString("This is the new content.  bbbbbbbbbbbbbbbbbbbbbb","utf-8");
}

// Write the modified .zip back to "abc.zip"
success = zip2.WriteZipAndClose();

Debug.WriteLine("success.");