如何从列表框中获取值 [英] how to get a value from list box
问题描述
我想借助键盘在列表视图控件中上下移动，并且在上下移动时，列表框的相应值应显示在文本框中... i want to move up and down in a list view control with the help of keyboard and on moving up and down corresponding value of list box should be displayed in a text box...
并且列表视图由数据库在加载表单时填充
当我这样做时，然后在移入列表视图中时，列表视图的值就会发生变化，例如数据行视图". br/>
WPF: Selector.SelectionChanged事件 [ ^ ]
WinForms: ListBox.SelectedIndexChanged事件 [ ListView.SelectedIndexChanged事件 [ < html xmlns =" >
< 头 =" 服务器" < 标题 > < /title >
< 脚本 =" javascript" 类型 文本/javascript " <％ TextBox1.ClientID ％> ').value = _this.value ;
}
< /script >
< /head >
< 正文 >
< 表单 =" form1" runat >服务器" >
< div >
< asp:ListBox
谢谢，
Imdadhusen
and the list view is filled by a database on loading the form
when i do that then on moving in list view the value of list view in changed like"Data Row view".The low tech way to do it:
WPF: Selector.SelectionChanged event[^]
WinForms: ListBox.SelectedIndexChanged event[^] or ListView.SelectedIndexChanged event[^]
Hook a handler to that event.
In WPF, you should do it with data binding. Bind the ListView''s SelectedIndex to a property of your ItemsSource and give the ItemsSource a CurrentItem property which you can bind the text box to. You can also bind SelectedItem directly to a view model property.use the event: SelectedIndexChanged
and write
textBox1.Text = listBox1.Text;
or
textBox1.Text = listBox1.SelectedItem.ToString();
You can do Using JavaScript
<html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> <script language="javascript" type="text/javascript"> function SetSelected(_this) { document.getElementById('<%TextBox1.ClientID %>').value = _this.value; } </script> </head> <body> <form id="form1" runat="server"> <div> <asp:ListBox ID="ListBox1" runat="server" Width="112px"> <asp:ListItem Text="" Value="">Test1</asp:ListItem> <asp:ListItem Text="" Value="">Test2</asp:ListItem> <asp:ListItem Text="" Value="">Test3</asp:ListItem> <asp:ListItem Text="" Value="">Test4</asp:ListItem> <asp:ListItem Text="" Value="">Test5</asp:ListItem> </asp:ListBox> <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> </div> </form> </body> </html>
Thanks,
Imdadhusen
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