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C# code to upload file to ftp server

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Introduction:
In my previous article I have explained about Auto refresh page using javascript. In this article I am going to explain about how to upload file to ftp server using c# code

Explanation:
The code uses FileInfo and FtpWebRequest classes. To use this classes include the below two namespaces in the code first.
using System.IO;
using System.Net;
Below is the code used to upload file to ftp server.
private void UploadFileToFTPServer(string filename)
{
    string ftpServerIP = "ftp.server.in/";
    string ftpUserName = "username";
    string ftpPassword = "password";

    FileInfo objFile = new FileInfo(filename);
    FtpWebRequest objFTPRequest;

    // Create FtpWebRequest object
    objFTPRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + objFile.Name));

    // Set Credintials
    objFTPRequest.Credentials = new NetworkCredential(ftpUserName, ftpPassword);

    // By default KeepAlive is true, where the control connection is
    // not closed after a command is executed.
    objFTPRequest.KeepAlive = false;

    // Set the data transfer type.
    objFTPRequest.UseBinary = true;

    // Set content length
    objFTPRequest.ContentLength = objFile.Length;

    // Set request method
    objFTPRequest.Method = WebRequestMethods.Ftp.UploadFile;

    // Set buffer size
    int intBufferLength = 16 * 1024;
    byte[] objBuffer = new byte[intBufferLength];

    // Opens a file to read
    FileStream objFileStream = objFile.OpenRead();

    try
    {
        // Get Stream of the file
        Stream objStream = objFTPRequest.GetRequestStream();

        int len = 0;

        while ((len = objFileStream.Read(objBuffer, 0, intBufferLength)) != 0)
        {
            // Write file Content
            objStream.Write(objBuffer, 0, len);
         }

        objStream.Close();
        objFileStream.Close();
        Console.Write("File upload success...");
     }
    catch (Exception ex)
    {
        throw ex;
    }
}

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