检查文件夹只在C＃.NET阅读 [英] Check if folder is read only in C#.net

问题描述

我在asp.net（C＃）4.0工作。上传图片之前，我要检查，如果在图像已被上传该文件夹存在与否。如果它存在，是与否只读，如果它是只读的，我要让不是只读的。我怎么可以这样做。每次当我开始我的应用程序时，将文件夹设置为只读。所以，我想通过编程方式检查这一切来避免这个问题。

I am working in asp.net(C#)4.0. Before uploading an image, I want to check that if the folder in which the image has been uploaded is exists or not. If it exists, is it read-only or not and if it is read-only, I want to make it not read-only. How can I do so. Each time when I start my application, the folder is set to read-only. So I want to avoid this problem by checking it all by programmatically.

我不喜欢这样...

            SaveFilePath = Server.MapPath("~\\_UploadFiles\\") + FileName;
            DirectoryInfo oDirectoryInfo = new DirectoryInfo(Server.MapPath("~\\_UploadFiles\\"));
            if(!oDirectoryInfo.Exists)
                  Directory.CreateDirectory(Server.MapPath("~\\_UploadFiles\\"));
            else
            {
                if (oDirectoryInfo.Attributes.HasFlag(FileAttributes.ReadOnly))
                {
                    oDirectoryInfo.Attributes = FileAttributes.Normal;
                }
            }

            if (File.Exists(SaveFilePath))
            {
                File.Delete(SaveFilePath);//Error is thrown from here
            }

这code抛出从code中的指定位置错误。文件夹_UploadFiles是只读的，但它仍然没有if语句中去，使FileAttributes.Normal

This code throws an error from the specified place on code. The folder "_UploadFiles" is read only but still its not going in to the if statement to make FileAttributes.Normal

该错误是..
访问路径C：\\的Inetpub \\ wwwroot的\\ WTExpenditurev01_VSS_UploadFiles \\ Winter.jpg'被拒绝

The error is.. Access to the path 'C:\Inetpub\wwwroot\WTExpenditurev01_VSS_UploadFiles\Winter.jpg' is denied.

推荐答案

使用系统.IO.DirectoryInfo类：

var di = new DirectoryInfo(folderName);

if(di.Exists())
{
  if (di.Attributes.HasFlag(FileAttributes.ReadOnly))
  {
    //IsReadOnly...
  }
}

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