要防止Advanced Installer中的MSIX安装文件覆盖子文件夹中的文件,可以使用以下代码示例:
下面是一个示例代码,可以在Custom Action中使用:
using System;
using System.IO;
using System.Windows.Forms;
using Microsoft.Deployment.WindowsInstaller;
namespace CustomActions
{
    public class CustomActions
    {
        [CustomAction]
        public static ActionResult CopyFiles(Session session)
        {
            try
            {
                string installDirectory = session["INSTALLDIR"]; // 获取安装目录
                string sourceDirectory = session["SourceDir"]; // 获取安装包中的文件源目录
                string[] filesToCopy = Directory.GetFiles(sourceDirectory, "*", SearchOption.AllDirectories);
                foreach (string file in filesToCopy)
                {
                    string relativeFilePath = file.Replace(sourceDirectory, ""); // 获取文件相对路径
                    string destinationFilePath = Path.Combine(installDirectory, relativeFilePath);
                    if (File.Exists(destinationFilePath))
                    {
                        session.Log("File already exists: " + destinationFilePath);
                        continue;
                    }
                    string destinationDirectory = Path.GetDirectoryName(destinationFilePath);
                    Directory.CreateDirectory(destinationDirectory);
                    File.Copy(file, destinationFilePath);
                    session.Log("File copied: " + destinationFilePath);
                }
                return ActionResult.Success;
            }
            catch (Exception ex)
            {
                session.Log("Error occurred during file copy: " + ex.Message);
                return ActionResult.Failure;
            }
        }
    }
}
要将此代码示例添加到Advanced Installer中,请按照以下步骤操作:
在安装过程中,此Custom Action将在复制文件时检查目标文件夹中是否已存在文件。如果文件已存在,则不会覆盖该文件,而是跳过继续复制其他文件。