/// <summary>
/// 子文件夹是否存在
/// </summary>
/// <param name="directoryPath">子文件夹的相对路径</param>
/// <returns>是否存在</returns>
public bool Exists(string directoryPath)
{
LocalDisk.GuardValidatePath(directoryPath);
directoryPath = LocalDisk.NormalizePath(directoryPath);
var dir = new DirectoryInfo(path + directoryPath);
return(dir.Exists);
}
/// <summary>
/// 创建子目录文件夹,如果文件夹已经存在那么不会进行任何操作
/// </summary>
/// <param name="directoryPath">子目录相对路径</param>
/// <returns>子文件夹实例</returns>
public IDirectory Create(string directoryPath)
{
LocalDisk.GuardValidatePath(directoryPath);
directoryPath = LocalDisk.NormalizePath(directoryPath);
IDirectory directory = null;
if (!Exists(path + directoryPath))
{
var dir = new DirectoryInfo(path + directoryPath);
dir.Create();
}
directory = new Directory(path + directoryPath, disk);
return(directory);
}
/// <summary>
/// 返回此目录的子目录（如果存在，反之抛出一个异常）
/// </summary>
/// <param name="directoryPath">子目录路径</param>
/// <returns>子目录文件夹</returns>
public IDirectory this[string directoryPath]
{
get
{
LocalDisk.GuardValidatePath(directoryPath);
directoryPath = LocalDisk.NormalizePath(directoryPath);
if (Exists(directoryPath))
{
return(new Directory(path + directoryPath, disk));
}
else
{
throw new DirectoryNotFoundException("a directory was not found at " + directoryPath);
}
}
}