我如何重命名一个文件使用c# ?
当前回答
Move是做同样的=复制和删除旧的。
File.Move(@"C:\ScanPDF\Test.pdf", @"C:\BackupPDF\" + string.Format("backup-{0:yyyy-MM-dd_HH:mm:ss}.pdf", DateTime.Now));
其他回答
当c#没有某些特性时,我就用c++或C:
public partial class Program
{
[DllImport("msvcrt", CallingConvention = CallingConvention.Cdecl, SetLastError = true)]
public static extern int rename(
[MarshalAs(UnmanagedType.LPStr)]
string oldpath,
[MarshalAs(UnmanagedType.LPStr)]
string newpath);
static void FileRename()
{
while (true)
{
Console.Clear();
Console.Write("Enter a folder name: ");
string dir = Console.ReadLine().Trim('\\') + "\\";
if (string.IsNullOrWhiteSpace(dir))
break;
if (!Directory.Exists(dir))
{
Console.WriteLine("{0} does not exist", dir);
continue;
}
string[] files = Directory.GetFiles(dir, "*.mp3");
for (int i = 0; i < files.Length; i++)
{
string oldName = Path.GetFileName(files[i]);
int pos = oldName.IndexOfAny(new char[] { '0', '1', '2' });
if (pos == 0)
continue;
string newName = oldName.Substring(pos);
int res = rename(files[i], dir + newName);
}
}
Console.WriteLine("\n\t\tPress any key to go to main menu\n");
Console.ReadKey(true);
}
}
Use:
using System.IO;
string oldFilePath = @"C:\OldFile.txt"; // Full path of old file
string newFilePath = @"C:\NewFile.txt"; // Full path of new file
if (File.Exists(newFilePath))
{
File.Delete(newFilePath);
}
File.Move(oldFilePath, newFilePath);
private static void Rename_File(string FileFullPath, string NewName) // nes name without directory actualy you can simply rename with fileinfo.MoveTo(Fullpathwithnameandextension);
{
FileInfo fileInfo = new FileInfo(FileFullPath);
string DirectoryRoot = Directory.GetParent(FileFullPath).FullName;
string filecreator = FileFullPath.Substring(DirectoryRoot.Length,FileFullPath.Length-DirectoryRoot.Length);
filecreator = DirectoryRoot + NewName;
try
{
fileInfo.MoveTo(filecreator);
}
catch(Exception ex)
{
Console.WriteLine(filecreator);
Console.WriteLine(ex.Message);
Console.ReadKey();
}
enter code here
// string FileDirectory = Directory.GetDirectoryRoot()
}
您可以使用File。行动起来吧。
Use:
public static class FileInfoExtensions
{
/// <summary>
/// Behavior when a new filename exists.
/// </summary>
public enum FileExistBehavior
{
/// <summary>
/// None: throw IOException "The destination file already exists."
/// </summary>
None = 0,
/// <summary>
/// Replace: replace the file in the destination.
/// </summary>
Replace = 1,
/// <summary>
/// Skip: skip this file.
/// </summary>
Skip = 2,
/// <summary>
/// Rename: rename the file (like a window behavior)
/// </summary>
Rename = 3
}
/// <summary>
/// Rename the file.
/// </summary>
/// <param name="fileInfo">the target file.</param>
/// <param name="newFileName">new filename with extension.</param>
/// <param name="fileExistBehavior">behavior when new filename is exist.</param>
public static void Rename(this System.IO.FileInfo fileInfo, string newFileName, FileExistBehavior fileExistBehavior = FileExistBehavior.None)
{
string newFileNameWithoutExtension = System.IO.Path.GetFileNameWithoutExtension(newFileName);
string newFileNameExtension = System.IO.Path.GetExtension(newFileName);
string newFilePath = System.IO.Path.Combine(fileInfo.Directory.FullName, newFileName);
if (System.IO.File.Exists(newFilePath))
{
switch (fileExistBehavior)
{
case FileExistBehavior.None:
throw new System.IO.IOException("The destination file already exists.");
case FileExistBehavior.Replace:
System.IO.File.Delete(newFilePath);
break;
case FileExistBehavior.Rename:
int dupplicate_count = 0;
string newFileNameWithDupplicateIndex;
string newFilePathWithDupplicateIndex;
do
{
dupplicate_count++;
newFileNameWithDupplicateIndex = newFileNameWithoutExtension + " (" + dupplicate_count + ")" + newFileNameExtension;
newFilePathWithDupplicateIndex = System.IO.Path.Combine(fileInfo.Directory.FullName, newFileNameWithDupplicateIndex);
}
while (System.IO.File.Exists(newFilePathWithDupplicateIndex));
newFilePath = newFilePathWithDupplicateIndex;
break;
case FileExistBehavior.Skip:
return;
}
}
System.IO.File.Move(fileInfo.FullName, newFilePath);
}
}
如何使用此代码
class Program
{
static void Main(string[] args)
{
string targetFile = System.IO.Path.Combine(@"D://test", "New Text Document.txt");
string newFileName = "Foo.txt";
// Full pattern
System.IO.FileInfo fileInfo = new System.IO.FileInfo(targetFile);
fileInfo.Rename(newFileName);
// Or short form
new System.IO.FileInfo(targetFile).Rename(newFileName);
}
}
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