Unzip a Single File by Index

Unzip a single file by index.

Download: Chilkat .NET Assemblies

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

bool success;

//  Any string unlocks the component for the 1st 30-days.
success = zip.UnlockComponent("Anything for 30-day trial");
if (success != true) {
    MessageBox.Show(zip.LastErrorText);
    return;
}

success = zip.OpenZip("my_photos.zip");
if (success != true) {
    MessageBox.Show(zip.LastErrorText);
    return;
}

//  How many files and directory entries are in this .zip?
int n;
n = zip.NumEntries;
textBox1.Text += "Num entries = " + Convert.ToString(n) + "\r\n";

//  Let's say we want to unzip the 3rd entry:
Chilkat.ZipEntry entry = null;
entry = zip.GetEntryByIndex(2);
if (entry == null ) {
    MessageBox.Show("Index out of range!");
    return;
}
else {
    //  Unzip it to C:/myTempDir
    success = entry.ExtractInto("c:/myTempDir");
    if (success != true) {
        MessageBox.Show(entry.LastErrorText);
        return;
    }
    else {
        MessageBox.Show("Extracted 1 file!");
    }

}