C# 删除文件、文件到到回收站及异常判断

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原文链接：http://www.cnblogs.com/whisht/archive/2013/05/17/3085056.html

文章标签：

#c/c++ #c#

本文详细介绍了Microsoft.VisualBasic.FileIO库中DeleteFile方法的使用，包括参数详解、常见异常及其处理方式。重点阐述了如何通过设置UIOption、RecycleOption和UICancelOption来控制文件删除过程中的可视跟踪、回收站行为和用户取消操作的响应。

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Namespace: Microsoft.VisualBasic.FileIO

Assembly: Microsoft.VisualBasic (in Microsoft.VisualBasic.dll)

Syntax

C++

public static void DeleteFile(
	string file,
	UIOption showUI,
	RecycleOption recycle,
	UICancelOption onUserCancel
)

Parameters

file

Type: System.String

Name and path of the file to be deleted.

showUI

Type: Microsoft.VisualBasic.FileIO.UIOption

Whether to visually track the operation's progress. Default is UIOption.OnlyErrorDialogs.

recycle

Type: Microsoft.VisualBasic.FileIO.RecycleOption

Whether or not the deleted file should be sent to the Recycle Bin. Default is RecycleOption.DeletePermanently.

onUserCancel

Type: Microsoft.VisualBasic.FileIO.UICancelOption

Specifies whether or not an exception is thrown when the user cancels the operation. Default is UICancelOption.ThrowException.

Exceptions

Exception	Condition
ArgumentException	The path is not valid for one of the following reasons: it is a zero-length string; it contains only white space; it contains invalid characters; it has a trailing slash where a file must be specified; or it is a device path (starts with \\.\).
ArgumentNullException	file is Nothing or an empty string.
PathTooLongException	The path exceeds the system-defined maximum length.
NotSupportedException	A file or directory name in the path contains a colon (:) or is in an invalid format.
IOException	The file is in use.
SecurityException	The user lacks necessary permissions to view the path.
FileNotFoundException	The file does not exist.
UnauthorizedAccessException	The user does not have permission to delete the file or the file is read-only.
OperationCanceledException	The user cancelled the operation and onUserCancel is set to UICancelOption.ThrowException. //重点，由此判断用户单击取消按钮时触发的异常，msdn手册上并没有写这块