/// <summary>
/// Removes child file
/// </summary>
/// <param name="name">File name</param>
/// <exception cref="InvalidOperationException">
/// Throws if child item is not a file, or if the item kind is not volume or directory,
/// or if a child item with the specified name is not exists,
/// or if a child item with the specified name is locked
/// </exception>
public void RemoveChildFile(string name)
{
this.ValidateCanHasChildItems();
IFileSystemItem file = FileSystemItemFactory.CreateFile(name); // validate name
IFileSystemItem child = this.ChildItems.Where(item => FileSystemItemNameComparer.Equals(file.Name, item.Name)).FirstOrDefault();
if (child is null)
{
throw new InvalidOperationException("File with the specified name is not exists.");
}
if (child.Kind != FileSystemItemKind.File)
{
throw new InvalidOperationException("Item with the specified name is not a file.");
}
if (child.IsLocked)
{
throw new InvalidOperationException("File with the specified name is locked.");
}
this.childItems.Remove(child);
}
/// <summary>
/// Adds child file
/// </summary>
/// <param name="name">File name</param>
/// <exception cref="InvalidOperationException">
/// Throws if child directory or file with same name already exists,
/// or if the item kind is not volume or directory
/// </exception>
/// <returns>Added child file</returns>
public IFileSystemItem AddChildFile(string name)
{
this.ValidateCanHasChildItems();
IFileSystemItem file = FileSystemItemFactory.CreateFile(name);
if (this.ChildItems.Any(item => FileSystemItemNameComparer.Equals(file.Name, item.Name)))
{
throw new InvalidOperationException("Directory or file with the specified name already exists.");
}
this.childItems.Add(file);
return(file);
}