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Function to copy a directory to another place (nothing fancy)

, 19 Nov 2002 307.9K 2K 61
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Simple C#/.NET tip to copy an entire directory tree to another directory

Introduction

I have been working with the .NET framework for several weeks now and I really enjoy the API. But sometimes I miss some features I need right now, even if I expect the framework to grow and get new classes and capabilities in the forthcoming versions (like Java did).

This article doesn't try to teach something but just gives a solution to anyone who needs it. I tried to keep it simple with few lines of code.

The FileSystem class

This class includes high level functions missing in the standard System.IO namespace. The class provided here only includes a directory to directory copy function for the moment, and the purpose of this article is to fix this .NET missing feature that many VB developers (for example) are used to.

The function takes two absolute paths (source directory and destination directory) as parameters and returns a boolean equal to true when the copy succeeds. Please note that this function automatically overwrites a destination file with the same name. Of course all subdirectories are also copied recursively.

using System;
using System.IO;

namespace Utility.IO{
    /// <summary>
    /// Filesystem
    /// </summary>
    public class FileSystem{
        // Copy directory structure recursively
        public static void copyDirectory(string Src,string Dst){
            String[] Files;

            if(Dst[Dst.Length-1]!=Path.DirectorySeparatorChar) 
                Dst+=Path.DirectorySeparatorChar;
            if(!Directory.Exists(Dst)) Directory.CreateDirectory(Dst);
            Files=Directory.GetFileSystemEntries(Src);
            foreach(string Element in Files){
                // Sub directories
                if(Directory.Exists(Element)) 
                    copyDirectory(Element,Dst+Path.GetFileName(Element));
                // Files in directory
                else 
                    File.Copy(Element,Dst+Path.GetFileName(Element),true);
                }
            }

        }
    }

An usage example

Here is an example of how to use the FileSystem class.

// After a successful copy, you can then call 
// Directory.Delete(@"c:\MySrcDirectory") to mimic a Directory.Move behaviour
try{
    copyDirectory(@"c:\MySrcDirectory",@"c:\MyDstDirectory");
    }
catch(Exception Ex){
    Console.Error.WriteLine(Ex.Message);
    }

Conclusion

This article is just a tip targeted to beginners or newcomers who noticed this missing feature in the .NET framework. It is provided as a possible solution, but I encourage anyone to write his own function.

Happy Coding !!!

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here

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About the Author

GriffonRL
Software Developer (Senior) Siliconz Ltd
New Zealand New Zealand
Richard Lopes
Just Programmer

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Comments and Discussions

 
GeneralLittle help required ! Pin
vikas123423-Mar-04 3:30
sussvikas123423-Mar-04 3:30 
GeneralVB.NET Version Pin
starlogic8-Feb-04 13:56
memberstarlogic8-Feb-04 13:56 
GeneralRe: VB.NET Version Pin
korcutt27-Apr-06 11:28
memberkorcutt27-Apr-06 11:28 
QuestionHow to determine drive types Pin
liuhoihing17-Nov-03 19:36
memberliuhoihing17-Nov-03 19:36 
AnswerRe: How to determine drive types Pin
chinese_zmm24-Mar-09 23:18
memberchinese_zmm24-Mar-09 23:18 
AnswerRe: How to determine drive types Pin
FrozenHearted25-Mar-09 23:34
memberFrozenHearted25-Mar-09 23:34 
QuestionWhy this way? Pin
Mustafa Demirhan19-Nov-02 15:54
memberMustafa Demirhan19-Nov-02 15:54 
AnswerRe: Why this way? Pin
GriffonRL19-Nov-02 21:35
memberGriffonRL19-Nov-02 21:35 
Hello,

Great question because I saw someone showing this solution in a newsgroup Poke tongue | ;-P .

What about using a shell function to copy the directory ?
Advantages:
- Maybe the copy will be faster because you use pure native code.
Problems:
- Your code is not 100% .NET compliant.
- Your code is not portable to another framework version (like mono on Linux) because you rely on Windows commands.
- No exceptions will be raised in case of an error occurring during the shell copy.
- You start a new external process.

Convinced ?

R. LOPES
Just programmer.
GeneralRe: Why this way? Pin
Mustafa Demirhan20-Nov-02 0:18
memberMustafa Demirhan20-Nov-02 0:18 
GeneralRe: Why this way? Pin
GriffonRL20-Nov-02 1:24
memberGriffonRL20-Nov-02 1:24 
GeneralRe: Why this way? Pin
BarryJ21-Nov-02 5:09
memberBarryJ21-Nov-02 5:09 
GeneralRe: Why this way? Pin
GriffonRL21-Nov-02 5:45
memberGriffonRL21-Nov-02 5:45 
GeneralGreat article... Pin
David Stone19-Nov-02 5:13
memberDavid Stone19-Nov-02 5:13 
GeneralRe: Great article... Pin
GriffonRL19-Nov-02 5:42
memberGriffonRL19-Nov-02 5:42 
GeneralRe: Great article... Pin
David Stone19-Nov-02 15:32
memberDavid Stone19-Nov-02 15:32 
GeneralRe: Great article... Pin
Mustafa Demirhan19-Nov-02 15:51
memberMustafa Demirhan19-Nov-02 15:51 
GeneralRe: Great article... Pin
GriffonRL19-Nov-02 21:21
memberGriffonRL19-Nov-02 21:21 
GeneralRe: Great article... Pin
David Stone20-Nov-02 11:08
memberDavid Stone20-Nov-02 11:08 
GeneralRe: Great article... Pin
Anonymous20-Nov-02 21:42
sussAnonymous20-Nov-02 21:42 
GeneralRe: Great article... Pin
David Stone21-Nov-02 13:32
memberDavid Stone21-Nov-02 13:32 
GeneralRe: Great article... Pin
jalbitz12-Nov-03 8:11
memberjalbitz12-Nov-03 8:11 

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