File from one computer to another computer network drive in LAN using C# .NET

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Hello Everyone

I want to code to transfer a file from one computer to another computer through network in c#

Can anyone help me

Thanks In Advance

Posted 25-May-16 21:34pm

.net developer123456789

Updated 10-Jan-19 22:03pm

koolprasad2003

v2

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2 solutions

Solution 1

Basically, it's just a case of calling File.Move: File.Move Method (String, String) (System.IO)[^] and providing the source and destination paths.
The problems occur if the remote machine requires a login, in which case the simplest solution is to create a "virtual disk" on your PC which is connected to the folder on the remote PC (I do this to my NAS to make everything simpler, and connect "drive letters" to a number of different folders for various purposes). You can do this in Windows Explorer, via the "Map network drive" option of the network context menu.
If you don't, then you probably need to use impersonation:

C#

AppDomain.CurrentDomain.SetPrincipalPolicy(PrincipalPolicy.WindowsPrincipal);
WindowsIdentity wid = new WindowsIdentity(username, password);
WindowsImpersonationContext context = wid.Impersonate();

File.Move(pathToSourceFile, "\\\\Server\\Folder");

context.Undo();

Posted 25-May-16 21:56pm

OriginalGriff

Comments

.net developer123456789 26-May-16 4:58am

I got error something like this :- The name provided is not a properly formed account name.

OriginalGriff 26-May-16 5:05am

Probably, your username is in the wrong format: it should be "user@domain"

Member 13968693 13-Sep-18 22:43pm

In this line: WindowsImpersonationContext context = wid.Impersonate();
I got this error: System.Reflection.TargetException: Error in the application.

Member 15345338 9-Sep-21 5:20am

in this line:WindowsIdentity wid = new WindowsIdentity(@"Administrator@MYLAB.LOCAL", "Password1");
i got a error:System.Security.SecurityException: 'The user name or password is incorrect.
' than i entered a destination machine user name and password have same error. i can't solve it

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koolprasad2003 · Accepted Answer · 2016-05-25T22:53:00

Solution 2

To copy file from one machine to another through LAN, you need some share folder on destination machine.
Then you can access it using following syntax

C#

System.IO.File.Copy("sourcePath", "\\machinename\share folder path");

//but if you want to paste it on specific drive then you can use following code
System.IO.File.Copy("sourcePath", "\\machinename\DriveLetter$\folder name");
//e.g. System.IO.File.Copy("D:\\test.txt", "\\machinename\E$\test\test.txt");

Posted 25-May-16 22:53pm

koolprasad2003

Comments

.net developer123456789 26-May-16 5:28am

Thanks a lot..Now working

koolprasad2003 26-May-16 5:49am

Please share you code, so that we can help you

.net developer123456789 26-May-16 5:54am

The file '\\Test-PC\UploadTest\test.txt' already exists.
please any idea ?

koolprasad2003 26-May-16 6:08am

Do you want to replace existing file ?

.net developer123456789 26-May-16 6:05am

Code Here :

public static void UploadShareFile(string strfilename)
{
try
{
string fileName = Path.GetFileName(strfilename);
System.IO.File.Copy(strfilename, "\\\\Admin-PC\\Upload\\" + fileName);

}
catch (Exception ex)
{
WriteToErrorFile("UploadShareFile Method Error on: {0} " + ex.Message);
}
}

koolprasad2003 26-May-16 6:08am

Do you want to replace existing file ?

.net developer123456789 26-May-16 6:42am

Yes,please help me

koolprasad2003 26-May-16 7:02am

Just pass 'true' to copy function, it will helps to overwrite exiting file. see below
// Copy one file to a location where there is a file already exist
File.Copy("file-a.txt", "file-b.txt", true); // overwrite = true

.net developer123456789 26-May-16 7:32am

Thanks...

koolprasad2003 26-May-16 7:33am

If it resolve your issue.. then accept this as solution