C＃当我在列表框中选择一个项目时，应该使用哪个事件在文本框中显示数据？

Question

C# Which Event should I use to display data in a textbox when I select an item in a listbox?

I want to select an item in a list box (winforms) and then a textbox near by show some data related to that item but I don't know which event to use. I'll need to be able to click down the list and watch the textbox text update with each click.

Thanks

Answer 1

的SelectedIndexChanged

Answer 2

You will want to handle either SelectedIndexChanged or SelectedValueChanged .

(Note that the SelectedValueChanged MSDN article has an example that sounds like exactly what you are doing.)

Answer 3

Assuming you have a form with a TextBox and a ListBox.

    public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();

        this.listBox1.SelectedIndexChanged += new System.EventHandler(this.listBox1_SelectedIndexChanged);
    }

    private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
    {
        textBox1.Text = listBox1.SelectedItem.ToString();
    }
}

Answer 4

我认为这会帮助您。

Answer 5

抱歉，我不知道该事件的确切名称，但是您正在寻找的是SelectedItemChanged之类的东西。

Answer 6

Is the SelectedIndexChanged event not working for you?

private void listBox1_SelectedIndexChanged(object sender, EventArgs e) {
    relatedTextbox.Text = listBox1.SelectedItem.ToString();
}