C# Copy a file to another location with a different name

Question

If certain conditions are met, I want to copy a file from one directory to another WITHOUT deleting the original file. I also want to set the name of the new file to a particular value.

I am using C# and was using FileInfo class. While it does have CopyTo method. It does not give me the option to set the file name. And the MoveTo method while allowing me to rename the file, deletes the file in the original location.

What is the best way to go about this?

Answer 1

System.IO.File.Copy(oldPathAndName, newPathAndName);

Answer 2

Use the File.Copy method instead

eg.

File.Copy(existingfile, newfile);

You can call it whatever you want in the newFile, and it will rename it accordingly.

Answer 3

You may also try the Copy method:

File.Copy(@"c:\work\foo.txt", @"c:\data\bar.txt")

Answer 4

You can use either File.Copy(oldFilePath, newFilePath) method or other way is, read file using StreamReader into an string and then use StreamWriter to write the file to destination location.

Your code might look like this :

StreamReader reader = new StreamReader("C:\foo.txt");
string fileContent = reader.ReadToEnd();

StreamWriter writer = new StreamWriter("D:\bar.txt");
writer.Write(fileContent);

You can add exception handling code...

Answer 5

You can use the Copy method in the System.IO.File class.

Answer 6

One method is:

File.Copy(oldFilePathWithFileName, newFilePathWithFileName);

Or you can use the FileInfo.CopyTo() method too something like this:

FileInfo file = new FileInfo(oldFilePathWithFileName);
file.CopyTo(newFilePathWithFileName);

Example:

File.Copy(@"c:\a.txt", @"c:\b.txt");

or

FileInfo file = new FileInfo(@"c:\a.txt");
file.CopyTo(@"c:\b.txt");

Answer 7

If you want to use only FileInfo class try this

             string oldPath = @"C:\MyFolder\Myfile.xyz";
             string newpath = @"C:\NewFolder\";
             string newFileName = "new file name";
             FileInfo f1 = new FileInfo(oldPath);
           if(f1.Exists)
             {
                if(!Directory.Exists(newpath))
                {
                    Directory.CreateDirectory(newpath); 
                }
                 f1.CopyTo(string.Format("{0}{1}{2}", newpath, newFileName, f1.Extension));
             }