要压缩的文件存在C#

using System;
using System.IO;
using System.IO.Compression;

public class Program
{
    public static void Main()
    {
        string sourceFilePath = "path/to/source/file";
        string zipFilePath = "path/to/zip/file.zip";

        using (FileStream zipToCreate = new FileStream(zipFilePath, FileMode.Create))
        {
            using (ZipArchive archive = new ZipArchive(zipToCreate, ZipArchiveMode.Create))
            {
                archive.CreateEntryFromFile(sourceFilePath, Path.GetFileName(sourceFilePath));
            }
        }

        Console.WriteLine("File compressed successfully.");
    }
}