我遇到了一个我无法修复的错误：
Error 1 'System.Windows.Forms.Label' does not contain a definition for 'Copy'
and no extension method 'Copy' accepting a first argument of
type'System.Windows.Forms.Label'
could be found (are you missing a using directive or an assembly reference?)
//path 156 22 FileWatcherEigen
那是我的错误。有人可以帮助我并向我解释出了什么问题吗？
这是我的代码：
using System;
using System.IO;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
private bool pause = false;
private bool cut1 = false;
private bool copy1 = false;
public Form1()
{
InitializeComponent();
}
// The lines with performed actions of a file
private void fileSystemWatcher1_Created(object sender,System.IO.FileSystemEventArgs e)
{
if (!pause)
{
listBox1.Items.Add("File Created> " + e.FullPath + " -Date:" + DateTime.Now);
}
}
private void fileSystemWatcher1_Changed(object sender, System.IO.FileSystemEventArgs e)
{
if (!pause)
{
listBox1.Items.Add("File Changed> " + e.FullPath + " -Date:" + DateTime.Now);
}
}
private void fileSystemWatcher1_Deleted(object sender, System.IO.FileSystemEventArgs e)
{
if (!pause)
{
listBox1.Items.Add("File Deleted> " + e.FullPath + " -Date:" + DateTime.Now);
}
}
private void fileSystemWatcher1_Renamed(object sender, System.IO.RenamedEventArgs e)
{
if (!pause)
{
listBox1.Items.Add("File Renamed> " + e.FullPath + " -Date:" + DateTime.Now);
}
}
private void fileSystemWatcher2_Changed(object sender, System.IO.FileSystemEventArgs e)
{
if (!pause)
{
listBox1.Items.Add("File Changed> " + e.FullPath + " -Date:" + DateTime.Now);
}
}
private void fileSystemWatcher2_Created(object sender, System.IO.FileSystemEventArgs e)
{
if (!pause)
{
listBox1.Items.Add("File Created> " + e.FullPath + " -Date:" + DateTime.Now);
}
}
private void fileSystemWatcher2_Deleted(object sender, System.IO.FileSystemEventArgs e)
{
if (!pause)
{
listBox1.Items.Add("File Deleted> " + e.FullPath + " -Date:" + DateTime.Now);
}
}
private void fileSystemWatcher2_Renamed(object sender, System.IO.RenamedEventArgs e)
{
if (!pause)
{
listBox1.Items.Add("File Renamed> " + e.FullPath + " -Date:" + DateTime.Now);
}
}
//1st directory
private void button2_Click(object sender, EventArgs e)
{
if (dlgOpenDir.ShowDialog() == DialogResult.OK)
{
fileSystemWatcher1.EnableRaisingEvents = false; // Stop watching
fileSystemWatcher1.IncludeSubdirectories = true;
fileSystemWatcher1.Path = dlgOpenDir.SelectedPath;
textBox1.Text = dlgOpenDir.SelectedPath; // Text of textBox2 = Path of fileSystemWatcher2
fileSystemWatcher1.EnableRaisingEvents = true; // Begin watching
}
}
//2nd directory
private void button3_Click(object sender, EventArgs e)
{
if (dlgOpenDir.ShowDialog() == DialogResult.OK)
{
fileSystemWatcher2.EnableRaisingEvents = false; // Stop watching
fileSystemWatcher2.IncludeSubdirectories = true;
fileSystemWatcher2.Path = dlgOpenDir.SelectedPath;
textBox2.Text = dlgOpenDir.SelectedPath; // Text of textBox2 = Path of fileSystemWatcher2
fileSystemWatcher2.EnableRaisingEvents = true; // Begin watching
}
}
//log
private void button1_Click(object sender, EventArgs e)
{
DialogResult resDialog = dlgSaveFile.ShowDialog();
if (resDialog.ToString() == "OK")
{
FileInfo fi = new FileInfo(dlgSaveFile.FileName);
StreamWriter sw = fi.CreateText();
foreach (string sItem in listBox1.Items)
{
sw.WriteLine(sItem);
}
sw.Close();
}
}
//pause watching
private void pause_button_Click(object sender, EventArgs e)
{
if (!pause)
{
pause = true;
pause_button.Text = "Unpause";
}
else
{
pause = false;
pause_button.Text = "Pause Watching";
}
}
//clear listbox
private void clear_button_Click(object sender, EventArgs e)
{
listBox1.Items.Clear();
}
private void Transfer_Click(object sender, EventArgs e)
{
if (copy1)
{
File.Copy(FileBrowseBox.Text, Path.Combine(DestinationBox.Text, Path.ChangeExtension(FileNameBox.Text, Path.GetExtension(FileBrowseBox.Text))));
}
}
private void Browse_file_Click(object sender, EventArgs e)
{
DialogResult resDialog = openFileDialog1.ShowDialog();
if (resDialog == DialogResult.OK)
{
FileBrowseBox.Text = openFileDialog1.FileName;
}
}
private void Browse_destination_Click(object sender, EventArgs e)
{
DialogResult resDialog = folderBrowserDialog1.ShowDialog();
if (resDialog == DialogResult.OK)
{
DestinationBox.Text = folderBrowserDialog1.SelectedPath;
}
}
private void CopyButton_CheckedChanged(object sender, EventArgs e)
{
copy1 = true;
}
}
}
它说问题出在这部分：
File.Copy(FileBrowseBox.Text, Path.Combine(DestinationBox.Text, Path.ChangeExtension(FileNameBox.Text, Path.GetExtension(FileBrowseBox.Text))));
我试图在这个论坛上找到它，但我真的找不到答案或解决方案
它确实适用于以下代码：
using System;
using System.IO;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
private bool cut = false;
private bool copy = false;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
File.Copy(FileBrowseBox.Text, Path.Combine(DestinationBox.Text, Path.ChangeExtension(FileBox.Text, Path.GetExtension(FileBrowseBox.Text))));
label2.Text = "File Transfer Succeeded";
}
private void button2_Click(object sender, EventArgs e)
{
DialogResult resDialog = openFileDialog1.ShowDialog();
if (resDialog == DialogResult.OK)
{
FileBrowseBox.Text = openFileDialog1.FileName;
label2.Text = "";
}
}
private void button3_Click(object sender, EventArgs e)
{
DialogResult resDialog = folderBrowserDialog1.ShowDialog();
if (resDialog == DialogResult.OK)
{
DestinationBox.Text = folderBrowserDialog1.SelectedPath;
label2.Text = "";
}
}
private void radioButton1_CheckedChanged(object sender, EventArgs e)
{
copy = true;
}
private void radioButton2_CheckedChanged(object sender, EventArgs e)
{
cut = true;
}
}
}