C# winform 文件批量拷贝到目标文件夹【案例+源码】

骑猪看日落 2024-03-31 10:58 66阅读 0赞

### C\# winform 文件批量拷贝到目标文件夹 ###

[上一篇：C\#读取写入文件的3种方式【案例+源码】][C_3]

**下面代码实现了从源文件夹拷贝所有文件到目标文件夹**

using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.IO;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    using System.Windows.Forms;
    
    namespace _1124_test2
    {
        
        public partial class Form1 : Form
        {
        
            public Form1()
            {
        
                InitializeComponent();
            }
    
            private void button1_Click(object sender, EventArgs e)
            {
        
                FolderBrowserDialog dilog = new FolderBrowserDialog();
                if (dilog.ShowDialog() == DialogResult.OK || dilog.ShowDialog() == DialogResult.Yes)
                {
        
                    textBox1.Text = dilog.SelectedPath;
                }
            }
    
            private void button2_Click(object sender, EventArgs e)
            {
        
                FolderBrowserDialog dilog = new FolderBrowserDialog();
                dilog.ShowDialog();
                textBox2.Text = dilog.SelectedPath;
            }
    
            private void button3_Click(object sender, EventArgs e)
            {
        
                DirectoryInfo thefolder = new DirectoryInfo(textBox1.Text);
                foreach (FileInfo nextfile in thefolder.GetFiles())
                {
        
                    try
                    {
        
                        string filename = nextfile.Name;
                        string filefullname = nextfile.FullName;
                        string mudi = textBox2.Text + "\\" + filename;
                        //如果目的文件已经存在
                        if (File.Exists(mudi))
                        {
        
                            File.Delete(mudi);
                        }
                        else
                        {
        
                            File.Copy(filefullname, mudi);
                            MessageBox.Show("已将文件复制到目标文件夹！");
                        }
                    }
                    catch (Exception ex)
                    {
        
                        MessageBox.Show(ex.ToString());
                    }
                }
            }
        }
    }

![在这里插入图片描述][92c963d8297740c9a03ca4d58db23bbc.png]  
![在这里插入图片描述][d921b80d49f54c8b97e761e8f26ba940.png]  
![在这里插入图片描述][2021da7ee92a458187e2b09de22cf07d.png]

[C_3]: https://blog.csdn.net/m0_65636467/article/details/127960729
[92c963d8297740c9a03ca4d58db23bbc.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/31/2c785fb1a9b842779fd11f173d20951a.png
[d921b80d49f54c8b97e761e8f26ba940.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/31/ec695f2832d947ea95352dedfd3488a2.png
[2021da7ee92a458187e2b09de22cf07d.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/31/367fea22316945ad928249a5e6a213ca.png