使用拖放重新排序winforms列表框？

Question

这是一个简单的过程吗？

我只是为内部工具编写一个快速的hacky UI.

我不想花一个年龄.

Answer 1

这是一个快速下降和肮脏的应用程序.基本上我用一个按钮和一个ListBox创建了一个Form.单击按钮时,ListBox将填充接下来20天的日期(必须使用仅用于测试的内容).然后,它允许在ListBox中拖放以进行重新排序:

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            this.listBox1.AllowDrop = true;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            for (int i = 0; i <= 20; i++)
            {
                this.listBox1.Items.Add(DateTime.Now.AddDays(i));
            }
        }

        private void listBox1_MouseDown(object sender, MouseEventArgs e)
        {
            if (this.listBox1.SelectedItem == null) return;
            this.listBox1.DoDragDrop(this.listBox1.SelectedItem, DragDropEffects.Move);
        }

        private void listBox1_DragOver(object sender, DragEventArgs e)
        {
            e.Effect = DragDropEffects.Move;
        }

        private void listBox1_DragDrop(object sender, DragEventArgs e)
        {
            Point point = listBox1.PointToClient(new Point(e.X, e.Y));
            int index = this.listBox1.IndexFromPoint(point);
            if (index < 0) index = this.listBox1.Items.Count-1;
            object data = e.Data.GetData(typeof(DateTime));
            this.listBox1.Items.Remove(data);
            this.listBox1.Items.Insert(index, data);
        }

Answer 2

迟了7年。但是对于任何新手来说，这里是代码。

private void listBox1_MouseDown(object sender, MouseEventArgs e)
    {
        if (this.listBox1.SelectedItem == null) return;
        this.listBox1.DoDragDrop(this.listBox1.SelectedItem, DragDropEffects.Move);
    }

    private void listBox1_DragOver(object sender, DragEventArgs e)
    {
        e.Effect = DragDropEffects.Move;
    }

    private void listBox1_DragDrop(object sender, DragEventArgs e)
    {
        Point point = listBox1.PointToClient(new Point(e.X, e.Y));
        int index = this.listBox1.IndexFromPoint(point);
        if (index < 0) index = this.listBox1.Items.Count - 1;
        object data = listBox1.SelectedItem;
        this.listBox1.Items.Remove(data);
        this.listBox1.Items.Insert(index, data);
    }

    private void itemcreator_Load(object sender, EventArgs e)
    {
        this.listBox1.AllowDrop = true;
    }