Question

其实我试图创建一个目录的zip文件，但ZipFile.CreateFromDirectory()给出了以下异常。

System.IO.IOException：进程无法访问该文件 PATH_TO_CREATE_ZIP / file.zip＆＃39;因为它被另一个人使用过程

以下是它的代码片段。：

public void createZipFile(string zipPath, string archiveFileName)
{
    string DirectoryToBeArchive = zipPath + "\\" + archiveFileName;

    if (Directory.Exists(DirectoryToBeArchive + ".zip"))
    {
        File.Delete(DirectoryToBeArchive);
        ZipFile.CreateFromDirectory(zipPath, DirectoryToBeArchive + ".zip", CompressionLevel.Fastest, false);
    }
    else
        ZipFile.CreateFromDirectory(zipPath, DirectoryToBeArchive + ".zip", CompressionLevel.Fastest, false);

    Directory.Delete(DirectoryToBeArchive);
}

帮助会得到很多赞赏。提前致谢。：）

Answer 1

只有你才能得到这个例外。让我们一步一步地调查您的代码：

createZipFile("C:\\Temp", "myZipFile");

public void createZipFile(string zipPath, string archiveFileName)
{
    //DirectoryToBeArchive = "C:\\Temp\\myZipFile"
    string DirectoryToBeArchive = zipPath + "\\" + archiveFileName;

    //Some logical error here, you probably meant to use File.Exists()
    //Basically, as you can't find a directory with name C:\\Temp\\myZipFile.zip, you always jump into else
    if (Directory.Exists(DirectoryToBeArchive + ".zip"))
    {
        File.Delete(DirectoryToBeArchive);
        ZipFile.CreateFromDirectory(zipPath, DirectoryToBeArchive + ".zip", CompressionLevel.Fastest, false);
    }
    else
        //It will try to overwrite your existing "DirectoryToBeArchive".zip file 
        ZipFile.CreateFromDirectory(zipPath, DirectoryToBeArchive + ".zip", CompressionLevel.Fastest, false);

    //This won't work as well btw, as there probably is no directory 
    //with name C:\\Temp\\myZipFile
    Directory.Delete(DirectoryToBeArchive);
}

尽管如此，即使您删除了该文件，您也可能会遇到同样的错误。问题是，当您尝试将文件夹C:\\Temp压缩到文件C:\\Temp\\myZipFile.zip中时，您也会尝试压缩文件本身。这实际上是你得到文件正在使用的错误。

所以，

使用File.Exists（）
在另一个文件夹中压缩
只是一个友好的警告，如果我是你，我会对Directory.Delete（）保持谨慎：）

Answer 2

正确代码：

这段代码经过一些小修改后对我有用..

string DirectoryToBeArchive = zipPath + "\\" + archiveFileName;

            if (File.Exists(DirectoryToBeArchive + ".zip"))
            {
                File.Delete(DirectoryToBeArchive + ".zip");
                ZipFile.CreateFromDirectory(DirectoryToBeArchive, DirectoryToBeArchive + ".zip", CompressionLevel.Fastest, false);
            }
            else
                ZipFile.CreateFromDirectory(DirectoryToBeArchive, DirectoryToBeArchive + ".zip", CompressionLevel.Fastest, false);

            Directory.Delete(DirectoryToBeArchive , true);

System.IO.IOException：进程无法访问文件PATH_TO_CREATE_ZIP / file.zip＆＃39;因为它正被另一个进程使用

2 个答案: