c# - 如何选择项目并从一个带有数据源的列表框移动到另一个列表框？

Question

listBox2.DataSource = listBox1.SelectedItems;
listBox2.DisplayMember = "Descripcion";
listBox2.ValueMember = "Id";

使用上述代码后，我无法一一选择。帮助！有人请发布代码以删除

Answer 1

First, you have to define a model for your Listbox :

public class MyModel
{
    public int Id { get; set; }
    public string Description { get; set; }
}

After you can set items like this :

listBox2.Items.Add(new MyModel() { Id = 1, Description = "description" });
listBox2.DisplayMember = "Description";
listBox2.ValueMember = "Id";

And now, your listbox will show the description property. If you select an item, the SelectedValue in listbox2 will be the value of id property

Answer 2

使用 SqlDataAdapter 将数据从数据源转储到列表框中，并根据其中一个列表框使用 listbox.add() 方法中选择的数据，使用“for”循环使用索引将数据从一个列表框转储到另一个列表框。

for(int i=0; i<listBox1.SelectedItems.Count; i++)
{
    listBox2.Items.Add(listbox1.SelectedItems[i].toString());
}

Answer 3

    if (listBox1.SelectedItem != null)
        {
            listBox2.Items.Add(listBox1.SelectedItem);
        }
        listBox2.DisplayMember = "Descripcion";
        listBox2.ValueMember = "Id";

这工作正常....