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C# File Copy

I have created a file copy function as follows

const string sourcepath = @"\\BANGALORECLUB\UPDATES\";
readonly string destinationpath = Application.StartupPath;
string[] filePaths;

filePaths = Directory.GetFiles(sourcepath, "*.*", SearchOption.AllDirectories);
const int bufferSize = 32 * 1024;
foreach (var filelist in filePaths)
{
CopyFile(filelist, destinationpath, bufferSize);
}

public static void CopyFile(string source, string destination, int bufferSize)

{
using (FileStream outputFile = File.OpenWrite(destination))
{
using (FileStream inputFile = File.OpenRead(source))
{
var buffer = new byte[bufferSize];
int bytesRead;
while ((bytesRead = inputFile.Read(buffer, 0, bufferSize)) != 0)
{
outputFile.Write(buffer, 0, bytesRead);
}
}
}
}

Error:
I get access denied error in following line
using (FileStream outputFile = File.OpenWrite(destination))
This is local folder and there is no need of any permission. To ensure what I said is right, i coped the destination path and pasted in my windows explorer where i was able to open the folder and create any files. Not sure what is causing the error

beyazlale

That may be because UAC settings.

this link may help you
http://social.msdn.microsoft.com/Forums/en/vbgeneral/thread/b83fcdd3-bc34-4d46-a07e-d4960434c5a7

ASKER CERTIFIED SOLUTION

kris_per

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kris_per

If you want to use .net's file copy method (instead of your CopyFile method), then the code would be:

...
foreach (var filelist in filePaths)
{
     string destinationFilePath = destinationpath + "\\" + System.IO.Path.GetFileName(filelist);

     // CopyFile(filelist, destinationpath, bufferSize);   

     System.IO.File.Copy(filelist,destinationFilePath,true);
}

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Naman Goel

string destinationpath = Application.StartupPath; must be a folder(Directory) and you are trying to access a folder as destination path for writing, that's why it is giving exception.

I had modified the above code in following way and it is working fine.

const string sourcepath = @"\\BANGALORECLUB\UPDATES\";
        readonly string destinationpath = Application.StartupPath;
        string[] filePaths;

filePaths = Directory.GetFiles(sourcepath, "*.*", SearchOption.AllDirectories);
            const int bufferSize = 32 * 1024;
            foreach (var filelist in filePaths)
            {
                CopyFile(filelist, destinationpath+Path.GetFileName(filelist), bufferSize);   
            }



  



 public static void CopyFile(string source, string destination, int bufferSize)
            
        {
            using (FileStream outputFile = File.OpenWrite(destination))
            {
                using (FileStream inputFile = File.OpenRead(source))
                {
                    var buffer = new byte[bufferSize];
                    int bytesRead;
                    while ((bytesRead = inputFile.Read(buffer, 0, bufferSize)) != 0)
                    {
                        outputFile.Write(buffer, 0, bytesRead);
                    }
                }
            }
        }

    }
}

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Naman Goel

sorry missed Path.Combine

attached is modified code

const string sourcepath = @"\\BANGALORECLUB\UPDATES\";
        readonly string destinationpath = Application.StartupPath;
        string[] filePaths;

filePaths = Directory.GetFiles(sourcepath, "*.*", SearchOption.AllDirectories);
            const int bufferSize = 32 * 1024;
            foreach (var filelist in filePaths)
            {
                CopyFile(filelist, Path.Combine(destinationpath,Path.GetFileName(filelist)), bufferSize);   
            }



  



 public static void CopyFile(string source, string destination, int bufferSize)
            
        {
            using (FileStream outputFile = File.OpenWrite(destination))
            {
                using (FileStream inputFile = File.OpenRead(source))
                {
                    var buffer = new byte[bufferSize];
                    int bytesRead;
                    while ((bytesRead = inputFile.Read(buffer, 0, bufferSize)) != 0)
                    {
                        outputFile.Write(buffer, 0, bytesRead);
                    }
                }
            }
        }

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