how to get a value from list box

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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...
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".

Posted 19-May-11 0:47am

geetajain

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Wayne Gaylard 19-May-11 6:59am

Are you using wpf or winforms listview ? How are you binding the data to the list view ? your question needs to be more clear, and provide more information.

Sunasara Imdadhusen 19-May-11 7:41am

Can you provide snippet of code?

3 solutions

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BobJanova · Answer 1 · 2011-05-19T01:41:00

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.

Rojeh · Answer 2 · 2011-05-19T01:47:00

Solution 2

use the event: SelectedIndexChanged
and write

textBox1.Text = listBox1.Text;

or

textBox1.Text = listBox1.SelectedItem.ToString();

Posted 19-May-11 1:47am

Rojeh

Updated 19-May-11 1:48am

v2

Comments

geetajain 19-May-11 12:05pm

on loading it shows a error"Invalid argument= value of '-1' is not valid for index"........
Please give me another solution

Sunasara Imdadhusen · Answer 3 · 2011-05-19T02:01:00

You can do Using JavaScript

XML

<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

how to get a value from list box

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