如何将项目从一个列表框添加到Windows应用程序中的另一个列表框 [英] how to add items from one listbox to another listbox in windows application

问题描述

我的应用程序中有2个列表框.正在从SQL Server数据库中检索数据.在listbox1中，我要从此列表框中选择一些项目，然后通过添加按钮将它们添加到第二个项目.

问题:正在从数据库中检索值，但是当我从listbox1中选择一个值后单击添加按钮时，System.Data.DataRowView将自动显示在listbox2中.

Listbox2当前未连接到任何数据库.

以下是代码:

I have 2 listboxes in my application. The data is being retrieved from a SQL server database. In listbox1, I want to select few items from this listbox and add them to second one through add button.

PROBLEM: The values are being retrieved from the database but when I click the add button after selecting a value from listbox1, System.Data.DataRowView is displayed in listbox2 automatically.

Listbox2 is not currently connected to any databse.

Here is the code:

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

if anyone have any idea how to do it help me

推荐答案

请勿在项目上使用.ToString().尝试这样的事情:

Do not use .ToString() on items. Try something like this:

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

这应该是:

This should wotk:

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

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

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