DeleteFiles
Deletes the files in a certain directory that comply to the searchpattern. The searchpattern can contain * and ? (the normal wildcard characters). The function can also search in the subdirectories.
Source
public static class DirectoryInfoExtensions
{
/// <summary>
/// Delete files in a folder that are like the searchPattern, don't include subfolders.
/// </summary>
/// <param name="di"></param>
/// <param name="searchPattern">DOS like pattern (example: *.xml, ??a.txt)</param>
/// <returns>Number of files that have been deleted.</returns>
public static int DeleteFiles(this DirectoryInfo di, string searchPattern)
{
return DeleteFiles(di, searchPattern, false);
}
/// <summary>
/// Delete files in a folder that are like the searchPattern
/// </summary>
/// <param name="di"></param>
/// <param name="searchPattern">DOS like pattern (example: *.xml, ??a.txt)</param>
/// <param name="includeSubdirs"></param>
/// <returns>Number of files that have been deleted.</returns>
/// <remarks>
/// This function relies on DirectoryInfo.GetFiles() which will first get all the FileInfo objects in memory. This is good for folders with not too many files, otherwise
/// an implementation using Windows APIs can be more appropriate. I didn't need this functionality here but if you need it just let me know.
/// </remarks>
public static int DeleteFiles(this DirectoryInfo di, string searchPattern, bool includeSubdirs)
{
int deleted = 0;
foreach (FileInfo fi in di.GetFiles(searchPattern, includeSubdirs ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly))
{
fi.Delete();
deleted++;
}
return deleted;
}
}
Example
DirectoryInfo di = new DirectoryInfo(@"c:\temp");
di.DeleteFiles("*.xml"); // Delete all *.xml files
di.DeleteFiles("*.xml", true); // Delete all, recursively
Author: Gaston Verelst
Submitted on: 30 okt. 2009
Language: C#
Type: System.IO.DirectoryInfo
Views: 5595