c# - 如何使用按钮 c# 在列表框中显示重复项

Question

我在互联网上的任何地方都找不到此类问题的答案，所以我想我不妨问问自己。我需要能够按下一个按钮，然后该按钮将运行一个功能，该功能会搜索所选文件目录以及之后的所有子文件夹，以查看同一个文件是否存在两次。我将把所有必要的代码放在下面:

public partial class fileForm : Form
{
        private string _filelistlocation;
        private string _fileDest;
        private string _fileSource;

        public fileForm()
        {
            InitializeComponent();
        }


public void fileForm_Load(object sender, System.EventArgs e)
{
            _filelistlocation = textBox1.Text;
            _fileDest = labelDestRoot.Text;
            _fileSource = labelSourceRoot.Text;
}

private void button1_Click(object sender, System.EventArgs e)
{
            checkedListBox1.Items.Clear();
            listBox2.Items.Clear();
            ReadFromList();
}

private void GetDuplicates()
{
            DirectoryInfo directoryToCheck = new DirectoryInfo(@"C:\temp\Location Source");`

            FileInfo[] files = directoryToCheck.GetFiles("*.*", SearchOption.AllDirectories);
            var duplicates = files.GroupBy(x => x.Name)
                                    .Where(group => group.Count() > 1)
                                    .Select(group => group.Key);//display duplicates
            if (duplicates.Count() > 0)
            {
                MessageBox.Show("No Dupes");
                FileStream s2 = new FileStream(_filelistlocation, FileMode.Open, FileAccess.Read, FileShare.Read);
            }
            else
                listBox1.Items.Add(duplicates);`
        }

private void button5_Click_1(object sender, EventArgs e)
{
             GetDuplicates();
}

编辑: `私有(private)无效GetDuplicates() { DirectoryInfo directoryToCheck = new DirectoryInfo(@"C:\temp\Location Source");

        FileInfo[] files = directoryToCheck.GetFiles("*.*", SearchOption.AllDirectories);
        var duplicates = files.GroupBy(x => x.Name)
                                .Where(group => group.Count() > 1)
                                .Select(group => group.Key);//display duplicates
        if (!duplicates.Any())
        {
            listBox1.Items.Add(duplicates);

            FileStream s2 = new FileStream(_filelistlocation, FileMode.Open, FileAccess.Read, FileShare.Read);



        }
        else
            MessageBox.Show("No Dupes");
    }`

像这样吗？

编辑 2:

private void GetDuplicates()
    {
        DirectoryInfo directoryToCheck = new DirectoryInfo(@"C:\temp\Location Source");

        FileInfo[] files = directoryToCheck.GetFiles("*.*", SearchOption.AllDirectories);
        var duplicates = files.GroupBy(x => x.Name)
                                .Where(group => group.Count() > 1)
                                .Select(group => group.Key);//display duplicates
        if (!duplicates.Any())
        {
            listBox1.Items.Add(duplicates.ToArray());

            FileStream s2 = new FileStream(_filelistlocation, FileMode.Open, FileAccess.Read, FileShare.Read);



        }
        else
            MessageBox.Show("No Dupes");
    }

如果有人能提供帮助那就太好了。谢谢!

Answer 1

根据评论，当有重复时，您会显示“No dupes”消息。 反转你的if语句

if (duplicates.Count() <= 0)
{
    MessageBox.Show("No Dupes");
    FileStream s2 = new FileStream(_filelistlocation, FileMode.Open, FileAccess.Read, FileShare.Read);
}
else
{
    listBox1.Items.AddRange(duplicates);
}