Question

今天我第一次尝试使用C＃。我想将文件夹上传到FTP服务器并使用此FTP CLass：http://www.codeproject.com/Tips/443588/Simple-Csharp-FTP-Class

现在，当我使用方法时，它说“名称ftpClient在该上下文中不存在”。我将复制我的代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Net
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;


namespace DaloCloud
{

    public partial class Form1 : Form
    {
        static int x = 200;     // For Help-Screen
        static int y = 200;     // For Help-Screen
        string username;        // FTP-Username Value stored in there
        string password;        // FTP-Password Value stored in there
        string dirPath;         // C:\DaloUpload
        string uploadPath;       // ftp: //daloserver/users/username/files

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void pictureBox1_Click(object sender, EventArgs e)
        {

        }

        private void helpButton_Click(object sender, EventArgs e)
        {
            // Create a new instance of Form2 and set its Visible property to true.
            Form2 form2 = new Form2();
            form2.Visible = true;

        }

        private void usernameTextbox_TextChanged(object sender, EventArgs e)
        {
            username = usernameTextbox.Text;
        }

        private void passwordTextbox_TextChanged(object sender, EventArgs e)
        {
            password = passwordTextbox.Text;
        }

        private void connectButton_Click(object sender, EventArgs e)
        {
            string[] files = Directory.GetFiles(dirPath, "*.*");
            string[] subDirs = Directory.GetDirectories(dirPath);

            foreach (string file in files)
            {
                ftpClient.upload(uploadPath + "/" + Path.GetFileName(file), file);
            }

            foreach (string subDir in subDirs)
            {
                ftpClient.createDirectory(uploadPath + "/" + Path.GetFileName(subDir));
                recursiveDirectory(subDir, uploadPath + "/" + Path.GetFileName(subDir));
            }
        }
    }
}

Answer 1

在C＃中，您必须先声明变量才能使用它们。您尚未声明任何名为ftpClient的变量。

此错误非常简明地告诉您，ftpClient在您使用它时并不存在。你必须声明它才能使它存在。

可能看起来像这样：

FTPClient ftpClient = new FTPClient();

未使用FTP类

1 个答案: