How do I move files in C#?

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I am not able to move the file from one location to another location. Please help to debug the issue.

What I have tried:

C#

   var filenames = Directory.GetFiles(filepath, "*.DXT");
foreach (var filename in filenames)
//Here i am reading the file for some operations..
         var readFile = File.ReadAllLines(filename);
         List<string[]> instantPackets = readFileAccProtocol.packet(obj["instant"]["header"].ToString(), readFile);

//Now i want to move the file to new location

File.Move(filename, moveTo);

//Here move to contains the destination path where i want to move my file

Posted 16-May-22 0:43am

Himansh jain

Updated 16-May-22 2:48am

PIEBALDconsult

v2

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Comments

Rajeev Jayaram 16-May-22 6:51am

What error you are getting? - Did you close the filestream before moving?

Himansh jain 16-May-22 7:03am

- $exception {"Cannot create a file when that file already exists."} System.IO.IOException

i am getting this exception

2 solutions

Solution 1

There are two possibilities:
1) The file genuinely exists in the destination in which case you need to delete it first: File.Exists(String) Method (System.IO) | Microsoft Docs[^] and File.Delete(String) Method (System.IO) | Microsoft Docs[^] are the methods you need.

2) The destination is a folder rather than a file name. If this is the case, the file can't be moved as it would overwrite the folder. Check your destination - you may need to append the filename:

C#

string file = @"D:\Test Data\MyFile.json";
string dest = Path.Combine(@"D:\Test Data\Test", Path.GetFileName(file));
File.Move (file, dest);

Posted 16-May-22 1:15am

OriginalGriff

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lmoelleb · Accepted Answer · 2022-05-16T01:16:00

Solution 2

moveTo should be the target filename, not just a folder name. You can use something like:

C#

moveToFullPath = Path.Join(moveTo, Path.GetFileName(filename));
File.Move(filename, moveToFullPath);

to keep the filename the same as it was in the source.

Posted 16-May-22 1:16am

lmoelleb