使用C#重命名文件名 [英] Renaming file name using C#

问题描述

我的任务是获取mdf文件，并且必须以编程方式将该文件附加到数据库，并且当另一个文件出现时，我必须分离该文件并对其进行备份并附加一个新文件.我的问题是，通过备份，我想按备份顺序(如backup1，backup2 .....等)提供该文件的名称.我需要帮助，如何以编程方式以递增顺序命名.

I have a task in that i get a mdf file, and i have to attach programatically that file to database and when another file comes i have to detach that and take backup of that and attach new one. My problem is, by taking backup i want to give names of that file in incremental order like backup1, backup2.....and so on. I need help how can i give names in incremental order programatically.

推荐答案

File.Copy [

File.Move[^]
For taking the backup (i.e. copying to a new name)
File.Copy[^]

使用 Directory.EnumerateFiles [ ^ ]查找带有"backup *"的文件夹中的所有文件.

使用LINQ排序并获取MAX文件计数名称.喜欢

Use Directory Class[^] and Directory.EnumerateFiles[^] to find all files in the folder with "backup*".

Use LINQ to sort and get the MAX file count name. Like

var file = (from file in Directory.EnumerateFiles(@"c:\archives1\library\", "backup*.txt")
            order by file
            select file).LastOrDefault();

然后使用文件类 [

And then use File class[^] file operation.

我将在应用程序设置中保留一个int变量，该变量将在每次需要备份时使用并递增.这样的事情(其中Properties.Settings.Default.fileCount是存储在应用程序设置"中的变量

I would keep an int variable in the Application Settings, which I would use and increment every time I needed to backup. Something like this (where Properties.Settings.Default.fileCount is the variable stored in Application Settings

int currentFileNumber = Properties.Settings.Default.fileCount;
           string newFileName = String.Format("YourFileName{0}.mdb", currentFileNumber + 1);
           File.Copy(string.Format("YourFileName{0}.mdb", currentFileNumber), string.Format("YourFileName{0}.mdb", currentFileNumber + 1));
           Properties.Settings.Default.fileCount = currentFileNumber + 1;
           Properties.Settings.Default.Save();

希望对您有帮助

Hope this helps

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