Password Protected Excel Download using EPPLUS

Question

I am exporting data in Excel form using EPPLUS Excel Library. I want that when excel downloaded it will ask for password. I have tried following code.

Answer 1

Just need to use the .Save overload with a password as the option:

package.Save("password");

Response To Comments

To apply a password if saving via a byte array it is very similar:

Byte[] bin = pck.GetAsByteArray("password");
System.IO.File.WriteAllBytes(fullFilePath, bin);