Question

我正在尝试创建一个包含3个listBox的程序，我需要按字母顺序排列其中的一个但是其他2个列表框信息仍然需要匹配第一个listBox。截至目前，我没有任何代码可以显示，但我确实有我的添加项目代码，以便大致了解我在寻找什么。

private void addButton_Click(object sender, EventArgs e)
{
    if (itemTextBox.Text == "")
        MessageBox.Show("Please enter an item to add");
    else
    groceryListBox.Items.Add(itemTextBox.Text);
    itemTextBox.Clear();
    countTextBox.Text = groceryListBox.Items.Count.ToString();

    //if (quanityListBox.Text == "")
    //    MessageBox.Show("Please enter an item to add");
    //else
        quanityListBox.Items.Add(quanityTextBox.Text);
    quanityTextBox.Clear();
   // countTextBox.Text = quanityListBox.Items.Count.ToString();

    //if (priceListBox.Text == "")
    //    MessageBox.Show("Please enter an item to add");
    //else
        priceListBox.Items.Add(priceTextBox.Text);
    priceTextBox.Clear();
    //countTextBox.Text = priceListBox.Items.Count.ToString();
    itemTextBox.Focus();
}


private void removeSingleButton_Click(object sender, EventArgs e)
    {
        if (groceryListBox.SelectedIndex != -1)
        {
            while(groceryListBox.SelectedItems.Count != 0)
            {
                groceryListBox.Items.Remove(groceryListBox.SelectedItems[0]);
            }
        }
        else
        {
            MessageBox.Show("Please Select an item(s) to remove");
        }
    }

    private void saveButton_Click(object sender, EventArgs e)
    {
      Settings.Default["List1"] = groceryListBox.Items.ToString();
        Settings.Default.Save();
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        groceryListBox.Text = Settings.Default["List1"].ToString();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        groceryListBox.Items.Clear();
    }

    private void button2_Click(object sender, EventArgs e)
    {
        groceryListBox.SelectedItems.Clear();
        for (int i = groceryListBox.Items.Count - 1; i >= 0; i--)
            if (groceryListBox.Items[i].ToString().ToLower().Equals(searchTextBox.Text.ToLower()))
                groceryListBox.SetSelected(i, true);
    }

    private void colorButton_Click(object sender, EventArgs e)
    {
        groceryListBox.BackColor = Color.DeepSkyBlue;
    }

    private void containsToolStripMenuItem_Click(object sender, EventArgs e)
    {
        {
            groceryListBox.SelectedItems.Clear();
            for (int i = groceryListBox.Items.Count - 1; i >= 0; i--)
                if (groceryListBox.Items[i].ToString().ToLower().Contains(searchTextBox.Text.ToLower()))
                    groceryListBox.SetSelected(i, true);
        }
    }

    private void startsWithToolStripMenuItem_Click(object sender, EventArgs e)
    {
        {
            groceryListBox.SelectedItems.Clear();
            for (int i = groceryListBox.Items.Count - 1; i >= 0; i--)
                if (groceryListBox.Items[i].ToString().ToLower().StartsWith(searchTextBox.Text.ToLower()))
                    groceryListBox.SetSelected(i, true);
        }
    }

    private void editToolStripMenuItem_Click(object sender, EventArgs e)
    {
        editTextBox.Text = groceryListBox.SelectedItem.ToString();
    }

    private void pasteToolStripMenuItem_Click(object sender, EventArgs e)
    {
        editTextBox.Paste();
    }

    private void toolsToolStripMenuItem_Click(object sender, EventArgs e)
    {
        if (editTextBox.Text == "")
            MessageBox.Show("Please enter an item to add");
        else
            groceryListBox.Items[groceryListBox.SelectedIndex] = editTextBox.Text;
        editTextBox.Clear();
        countTextBox.Text = groceryListBox.Items.Count.ToString();
    }

任何帮助将不胜感激。谢谢。

编辑....我想出了如何发布截图....

At least they allow me a link for now, I guess until my reputation goes up. :-)

这就是我想要它做的，如果我将一个项目添加到数量和价格的列表中，并且我在列表中有多个项目，我仍然希望数量和价格与该项目相匹配。

这可能也有帮助.....
With the items matching the price and quantity.

Answer 1

如果我正确地阅读您的问题，您是否正在寻找一种在多个ListBox之间显示相同信息的简单方法？如果是这样，您可以尝试以下方法：

    private List<string> testList = new List<string>();

    private void BindTestListData()
    {
        listBox1.DataSource = null;
        listBox1.DataSource = testList;

        listBox2.DataSource = null;
        listBox2.DataSource = testList;
    }

    private void button1_Click(object sender, EventArgs e)
    {
        if (!string.IsNullOrEmpty(InputTextBox.Text))
        {
            testList.Add(InputTextBox.Text);
            InputTextBox.Clear();
            BindTestListData();
        }
    }

将文本框中的所有文本都添加到列表中，而不是直接将其添加到ListBox中。然后将列表绑定到ListBox的数据源。

修改

抓我以前的样子。我想我现在更能理解你的问题了。尝试这样的事情：

private struct Item { public string Name { get; set; } public string Quantity { get; set; } public string Price { get; set; } } private List<Item> items = new List<Item>(); private void BindTestListData() { listBox1.DataSource = null; listBox1.DataSource = items; listBox1.DisplayMember = "Name"; listBox2.DataSource = null; listBox2.DataSource = items; listBox2.DisplayMember = "Quantity"; } private void button1_Click(object sender, EventArgs e) { if (!string.IsNullOrEmpty(InputTextBox.Text)) { Item newItem = new Item() { Name = InputTextBox.Text, Quantity = "1", Price = "$10" }; items.Add(newItem); InputTextBox.Clear(); BindTestListData(); } }

显然，button1_click（）方法中的数字只是占位符，但是这样的东西应该有效。

C＃ListBox相互同步

1 个答案: