Hi,
I have a weird issue with rad listbox filtering. I tried to attach that, but the post didn't allowed me to. I will write the code here.
<
form
id
=
"form1"
runat
=
"server"
>
<
div
>
<
telerik:RadScriptManager
ID
=
"script1"
runat
=
"server"
></
telerik:RadScriptManager
>
<
asp:Panel
ID
=
"pnlMainFields"
runat
=
"server"
>
<
table
>
<
tr
>
<
td
>
<
table
>
<
tr
>
<
td
>
<
h3
>Available Fields</
h3
>
<
table
>
<
tr
>
<
td
>
<
asp:CheckBox
ID
=
"chkShowAdvanced"
runat
=
"server"
Text
=
"Show advanced columns"
AutoPostBack
=
"true"
/>
</
td
>
</
tr
>
<
tr
>
<
td
>
<
telerik:RadTextBox
ID
=
"tbAvailableFilter"
runat
=
"server"
Width
=
"187px"
EmptyMessage
=
"Search ..."
autocomplete
=
"off"
onkeyup
=
"filterList();"
/>
<
telerik:RadButton
ID
=
"rbtnClear"
runat
=
"server"
Width
=
"22px"
AutoPostBack
=
"false"
OnClientClicking
=
"rbtnClear_OnClientClicking"
>
<
Icon
PrimaryIconCssClass
=
"rbClear"
/>
</
telerik:RadButton
>
</
td
>
</
tr
>
</
table
>
</
td
>
<
td
></
td
>
<
td
>
<
h3
>Selected Fields</
h3
>
</
td
>
</
tr
>
<
tr
>
<
td
style
=
"vertical-align:top"
>
<
telerik:RadListBox
ID
=
"lstAvailable"
runat
=
"server"
Height
=
"250px"
Width
=
"250px"
AllowTransfer
=
"true"
AllowTransferOnDoubleClick
=
"true"
TransferToID
=
"lstSelected"
EnableDragAndDrop
=
"true"
OnClientTransferring
=
"lstAvailable_OnClientTransferring"
ButtonSettings-ShowTransferAll
=
"false"
SelectionMode
=
"Multiple"
/>
</
td
>
<
td
style
=
"vertical-align: middle"
>
<
asp:ImageButton
ID
=
"btnMoveToSelected"
runat
=
"server"
ImageUrl
=
"/images/app/Button-Add.jpg"
Visible
=
"false"
/><
br
/>
<
asp:ImageButton
ID
=
"btnMoveToAvailable"
runat
=
"server"
ImageUrl
=
"/images/app/Button-Remove.jpg"
Visible
=
"false"
/>
</
td
>
<
td
>
<
telerik:RadListBox
ID
=
"lstSelected"
runat
=
"server"
Height
=
"250px"
Width
=
"250px"
EnableDragAndDrop
=
"true"
AllowReorder
=
"true"
/>
</
td
>
</
tr
>
</
table
>
</
td
>
</
tr
>
<
tr
>
<
td
></
td
>
</
tr
>
<
tr
>
<
td
></
td
>
</
tr
>
</
table
>
</
asp:Panel
>
</
div
>
<
telerik:RadCodeBlock
runat
=
"server"
>
<
script
type
=
"text/javascript"
>
function filterList() {
var listbox = $find("<%= lstAvailable.ClientID%>");
var textbox = $find('<%= tbAvailableFilter.ClientID %>');
clearListEmphasis(listbox);
createMatchingList(listbox, textbox.get_textBoxValue());
}
// Remove emphasis from matching text in ListBox
function clearListEmphasis(listbox) {
var re = new RegExp("</{0,1}em>", "gi");
var items = listbox.get_items();
var itemText;
items.forEach
(
function (item) {
itemText = item.get_text();
item.set_text(itemText.replace(re, ""));
}
)
}
// Emphasize matching text in ListBox and hide non-matching items
function createMatchingList(listbox, filterText) {
if (filterText != "") {
filterText = escapeRegExCharacters(filterText);
var items = listbox.get_items();
var re = new RegExp(filterText, "i");
items.forEach
(
function (item) {
var itemText = item.get_text();
if (itemText.match(re)) {
item.set_text(itemText.replace(re, "<
em
>" + itemText.match(re) + "</
em
>"));
item.set_visible(true);
}
else {
item.set_visible(false);
}
}
)
}
else {
var items = listbox.get_items();
items.forEach
(
function (item) {
item.set_visible(true);
}
)
}
}
function lstAvailable_OnClientTransferring(sender, eventArgs) {
// Transferred items retain the emphasized text, so it needs to be cleared.
clearListEmphasis(sender);
// Clear the list. Optional, but prevents follow up situation.
clearFilterText();
createMatchingList(sender, "");
}
function rbtnClear_OnClientClicking(sender, eventArgs) {
clearFilterText();
var listbox = $find("<%= lstAvailable.ClientID %>");
clearListEmphasis(listbox);
createMatchingList(listbox, "");
}
// Clears the text from the filter.
function clearFilterText() {
var textbox = $find('<%= tbAvailableFilter.ClientID %>');
textbox.clear();
}
// Escapes RegEx character classes and shorthand characters
function escapeRegExCharacters(text) {
return text.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
}
</
script
>
</
telerik:RadCodeBlock
>
</
form
>
The code to populate data is
Protected
Sub
Page_Load(
ByVal
sender
As
Object
,
ByVal
e
As
System.EventArgs)
Handles
Me
.Load
If
Not
Page.IsPostBack
Then
ListAvailableFields()
End
If
End
Sub
Private
Sub
ListAvailableFields()
lstAvailable.Items.Clear()
For
temp
As
Integer
= 1
To
10
Dim
name
As
String
= $
"Enabled {temp}"
lstAvailable.Items.Add(
New
Telerik.Web.UI.RadListBoxItem(name, name))
name = $
"Disabled {temp}"
lstAvailable.Items.Add(
New
Telerik.Web.UI.RadListBoxItem(name, name))
Next
End
Sub
Now, type something in the list. For example, type "Enabled" so that it filters all enabled columns.
Once filtered , Click on first search result, HOLD down the shift key and Click on the last item in the grid to select ALL values in the listbox.
Click on the right arrow and it should Copy all the selected values to the right grid.
However, you will notice that it copied over Enabled xx as well as Disabled xx which was not in the search result.
That is a problem, I filtered only "Enabled" but it moved "Disabled" as well.
It seems list is hiding the items only, but when you select multiple using SHIFT key, it includes them. Selecting as many items as you can, using one at a time, will not be an issue.
Any thoughts on this should be appreciated.
Thank you