Replace File within a Zip Archive

Download Chilkat .NET for 2.0 / 3.5 Framework

Download Chilkat .NET for 1.0 / 1.1 Framework

C# code demonstrating how to replace a file within a Zip archive.

		Chilkat.Zip zip = new Chilkat.Zip();
		zip.UnlockComponent("test");
		
		zip.OpenZip("1.zip");
		
		string fileToReplace = "1/parts/fne_title.gif";
		
		// Delete the entry you are adding...
		Chilkat.ZipEntry entry = zip.FirstMatchingEntry("*/fne_title.gif");
		if (entry != null) 
		{
		    zip.DeleteEntry(entry);
		}

		// Now add the updated file.
		bool saveExtraPath = true;
		zip.AppendOneFileOrDir(fileToReplace,saveExtraPath);
		zip.WriteZipAndClose();	

Important: The download for this example does not contain the ChilkatDotNet.dll which
must be downloaded and installed separately at http://www.chilkatsoft.com/downloads.asp.
Once installed, add a reference to the DLL in the project by following the instructions at
http://www.example-code.com/vbdotnet/step2.asp