I would like to add a double click mouse event to a listbox. When I double click an item I'd like to get the specific item and assign a method. I have been searching for tuturials in this field, but tried but somehow wasn't working.
Thank you for helping !
This code works for me
protected void Page_Load(object sender, EventArgs e)
{
if (Request["__EVENTARGUMENT"] != null && Request["__EVENTARGUMENT"] == "event 1")
{
// code for the event
}
ListBox1.Attributes.Add("ondblclick", ClientScript.GetPostBackEventReference(ListBox1, "event 1"));
}
ListBox1.SelectedItem the code breaks. When I check my watches ListBox1.SelectedItem is null. Any idea why this is the case?<%@ Page Language="C#" %>
<script runat="server">
void Page_Load(Object sender, EventArgs e){
if(Request.Params["ListBox1Hidden"] != null
&& (string)Request.Params["ListBox1Hidden"] == "doubleclicked" {
//This means It was double click
Response.Write("Double Click was fired selected item is "
+ ListBox1.SelectedItem.Text);
}
}
void Button1_Click(object sender, EventArgs e) {
Response.Write("Button was clicked");
}
</script>
<html>
<head>
<script language="javascript">
function ListBox1_DoubleClick() {
/* we will change value of this hidden field so
that in
page load event we can identify event.
*/
document.forms[0].ListBox1Hidden.value = "doubleclicked";
document.forms[0].submit();
}
</script>
</head>
<body>
<form runat="server">
<div>Double click on Listbox
<br />
<asp:ListBox id="ListBox1"
ondblclick="ListBox1_DoubleClick()" runat="server">
<asp:ListItem Value="1">One</asp:ListItem>
<asp:ListItem Value="2">Two</asp:ListItem>
<asp:ListItem Value="3">Three</asp:ListItem>
<asp:ListItem Value="4">Four</asp:ListItem>
</asp:ListBox>
<input type="hidden" name="ListBox1Hidden" />
</div>
<div>click on button
<br />
<asp:Button id="Button1" onclick="Button1_Click"
runat="server" Text="Button"/>
</div>
</form>
</body>
</html>
Simple sample to send selected item on a listbox:
private void listBox1_MouseDoubleClick(object sender, MouseEventArgs e)
{
string test = listBox1.SelectedItem.ToString();
}
if(listBox1.SelectedIndex != -1)