C# WCF Named Pipe - return progress to GUI

Question

I use WCF Service for Copying files in the local environment. The WPF GUI is used to call methods from WCF Service using some buttons. Type of communication I use is Named Pipes.

I have problem with "getting" any progress of copying a file and passing it to GUI to fill up the progress bar.

Is there any chance to handle that using named pipes when it's one-way communication?

Answer 1

First of all, it is not difficult to copy the file through WCF.

The problem is to get the percentage, and my method can be viewed in real-time in the WCF console.

Server:

Service1:

public void CopyFile(string source, string target, ref float percent, int bufferSize = 1024 * 1024 * 10)
{
    byte[] array = new byte[bufferSize]; 
    using (FileStream fsRead = File.Open(source, FileMode.Open, FileAccess.Read))
    {
        using (FileStream fsWrite = File.Open(target, FileMode.Create, FileAccess.Write))
        {
            while (fsRead.Position < fsRead.Length)
            {
               
                int length = fsRead.Read(array, 0, array.Length);
                
                fsWrite.Write(array, 0, length);
              
                percent = (float)fsRead.Position / fsRead.Length;
                Console.WriteLine(percent.ToString());
            }
        }
    }
    
}

IService1:

 [OperationContract]
 void CopyFile(string source, string target, ref float percent, int bufferSize = 1024 * 1024 * 10);

Client:

Service1Client client=new Service1Client();
   float percent = 0;
    string source = @"xxxx";
    string target = @"xxxx";
    percent=client.CopyFile(source, target,ref percent,1024*1024*10);

My suggestion would be to put this code directly in your WPF project. This will allow you to replace the Console.Write line with the display data.