服务器D盘上传的文件过多，空间剩下很少了，于是想把里面部分文件，大概几万个文件转移到E盘，做了这个小工具。先查询出要转移的文件清单，保存在一个记事本中，如下所示：

接着读取文件名，一个个移动到指定目录中去，winform窗体布局及效果如下：

完整代码如下：

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.IO;

using System.Threading;

namespace FileMoveTools

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        #region 目录

        private void btnBrowseSrcDir_Click(object sender, EventArgs e)

        {

            using (FolderBrowserDialog dialog = new FolderBrowserDialog())

            {

                if (dialog.ShowDialog() == DialogResult.OK)

                   txtSrcDir.Text = dialog.SelectedPath;

            }

        }

        private void btnBrowseFile_Click(object sender, EventArgs e)

        {

            using (OpenFileDialog openFileDialog = new OpenFileDialog())

            {

                openFileDialog.Filter = "Text (*.txt)|*.txt;";

                openFileDialog.AddExtension = true;

                openFileDialog.RestoreDirectory = true;

                if (openFileDialog.ShowDialog() == DialogResult.OK)

                {

                    txtFile.Text = openFileDialog.FileName;

                }

            }

        }

        private void btnSetDestDir_Click(object sender, EventArgs e)

        {

            using (FolderBrowserDialog dialog = new FolderBrowserDialog())

            {

                if (dialog.ShowDialog() == DialogResult.OK)

                    txtDestDir.Text = dialog.SelectedPath;

            }

        }

        #endregion

        private void btnOK_Click(object sender, EventArgs e)

        {

            Thread mythread = new Thread(MoveFile);

            mythread.IsBackground = true;

            mythread.Start();

        }

        private void MoveFile()

        {

            string srcDir = txtSrcDir.Text.Trim();

            string destDir = txtDestDir.Text.Trim();

            string files = txtFile.Text.Trim();

            #region 验证路径是否存在

            if (!Directory.Exists(srcDir))

            {

                statusMsg.Text = "要迁移的目录不存在";

                return;

            }

            if (!Directory.Exists(destDir))

            {

                statusMsg.Text = "迁移后的目录不存在";

                return;

            }

            if (!File.Exists(files))

            {

                statusMsg.Text = "文件清单不存！";

                return;

            }

            #endregion

            statusMsg.Text = "文件开始迁移..";

            int count = 0;

            using (StreamReader sr = new StreamReader(files, Encoding.UTF8))

            {

                string strline = null;

                while ((strline = sr.ReadLine()) != null)

                {

                    long diskFreeSpace = GetHardDiskFreeSpace("D");

                    if (diskFreeSpace <= 5)

                    {

                        statusMsg.Text = "硬盘空间剩下5GB，停止迁移文件.";

                        return;

                    }

                    string sourceFileName = srcDir + "/" + strline;

                    string destFileName = destDir + "/" + strline;

                    if (File.Exists(sourceFileName))

                    {

                        count++;

                        statusMsg.Text = "当前迁移第 " + count + " 个文件";

                        File.Move(sourceFileName, destFileName);

                    }

                }

            }

            this.Invoke(new Action(() =>

            {

                statusMsg.Text = "迁移了 " + count + " 个文件，完成";

            }));

        }

        ///  <summary>

        /// 获取指定驱动器的剩余空间总大小(单位为GB)

        ///  </summary>

        ///  <param name="str_HardDiskName">只需输入代表驱动器的字母即可 </param>

        ///  <returns> </returns>

        private static long GetHardDiskFreeSpace(string str_HardDiskName)

        {

            long freeSpace = new long();

            str_HardDiskName = str_HardDiskName + ":\\";

            System.IO.DriveInfo[] drives = System.IO.DriveInfo.GetDrives();

            foreach (System.IO.DriveInfo drive in drives)

            {

                if (drive.Name == str_HardDiskName)

                {

                    freeSpace = drive.TotalFreeSpace / (1024 * 1024 * 1024);

                }

            }

            return freeSpace;

        }

    }

}