给定一个可能的完整文件路径,我将以C :\dir\otherDir\possiblefile 为例
C:\dir\otherDir\possiblefile文件
或 C:\dir\otherDir目录
存在。我不想创建文件夹,但如果文件不存在,我想创建它。该文件可能有扩展名,也可能没有。我想完成这样的事情:
我想出了一个解决方案,但在我看来,这有点矫枉过正。应该有一个简单的方法来做到这一点。
这是我的代码:
// Let's example with C:\dir\otherDir\possiblefile
private bool CheckFile(string filename)
{
// 1) check if file exists
if (File.Exists(filename))
{
// C:\dir\otherDir\possiblefile -> ok
return true;
}
// 2) since the file may not have an extension, check for a directory
if (Directory.Exists(filename))
{
// possiblefile is a directory, not a file!
//throw new Exception("A file was expected but a directory was found");
return false;
}
// 3) Go "up" in file tree
// C:\dir\otherDir
int separatorIndex = filename.LastIndexOf(Path.DirectorySeparatorChar);
filename = filename.Substring(0, separatorIndex);
// 4) Check if parent directory exists
if (Directory.Exists(filename))
{
// C:\dir\otherDir\ exists -> ok
return true;
}
// C:\dir\otherDir not found
//throw new Exception("Neither file not directory were found");
return false;
}
有什么建议么?