Planned
Last Updated: 04 Aug 2022 11:50 by ADMIN
Created by: Peter
Comments: 1
Category: MultiSelect
Type: Bug Report
2

RadMultiselect control has ClearButton property which should enable displaying the button for clearing all the selected options...

However, eventhough I have this property turned on I don't see any button for clearing the values...  I can only go to the "expected" position for the button and then my mouse cursor is changed and after clicking all the values are cleared as expected... 

Unplanned
Last Updated: 28 Jul 2022 08:51 by Peter
Created by: Peter
Comments: 0
Category: MultiSelect
Type: Bug Report
1
When MapValueTo="dataItem" the serialization of the data item errors out as the object passed for serialization does not have the .ToJSON() method. 
Unplanned
Last Updated: 28 Jun 2022 13:15 by Peter

Hi, 

I wanted to implement RadComboBox combined with checkboxes and load on demand approach.

However, this page explained it is not possible and advised to use RadMultiSelect with Virtualization

https://docs.telerik.com/devtools/aspnet-ajax/controls/combobox/functionality/checkbox-support

I checked the page and demo is explained via web service... 

Is there a demo where it would be explained that when I type e.g. 3 characters some function would be called (e.g. OnItemsRequested) and in the server I would call database and fill the required data ? We don't have web service for providing the data... In code-behind we always access databases.

Thanks,

Peter

Completed
Last Updated: 08 Nov 2021 12:26 by ADMIN
Release R1 2022
Created by: Asif Pathan
Comments: 0
Category: MultiSelect
Type: Bug Report
0

The SelectionChanged event is fired before Page_Load, hence when the ViewState is applied, it overrides the changes made inside the OnSelectionChanged handler.

Example - Clearing the CheckBox selection of a RadComboBox inside SelectionChanged

Workaround - Create a custom boolean property on the page and set it to true inside the SelectionChanged. Then, in Page_Load or the OnLoad event of any control, execute your logic based on the custom boolean property value.

Unplanned
Last Updated: 04 Feb 2021 00:42 by Hugo Augusto

A "Control 'RadMultiSelect1' referenced by the ControlToValidate property of 'MultiSelectValidator1' cannot be validated" error is thrown when the RadMultiSelect id is passed to the ControlToValidate property of the RequiredFieldValidator or CustomValidator.

Workaround: Using a CustomValidator with no ControlToValidate

<telerik:RadMultiSelect ID="RadMultiSelect1" runat="server" DataTextField="text" DataValueField="value">
    <Items>
        <telerik:MultiSelectItem Text="Item 1" Value="1"></telerik:MultiSelectItem>
        <telerik:MultiSelectItem Text="Item 2" Value="2"></telerik:MultiSelectItem>
        <telerik:MultiSelectItem Text="Item 3" Value="3"></telerik:MultiSelectItem>
    </Items>
</telerik:RadMultiSelect>

<telerik:RadButton runat="server" ID="RadButton1" Text="Postback" AutoPostBack="true" />

<asp:CustomValidator ErrorMessage="Please select an item" ClientValidationFunction="ClientValidationFunction" runat="server" />
<script>
    function ClientValidationFunction(sender, args) {
        var multiselect = $find("<%= RadMultiSelect1.ClientID %>");

        if (multiselect.get_value().length == 0) {
            args.IsValid = false;
        }
    }
</script>

Unplanned
Last Updated: 06 Nov 2020 20:06 by ADMIN
Created by: Aurigo IT
Comments: 1
Category: MultiSelect
Type: Feature Request
1
Currently, to make the MultiSelect control work in an EditTemplate of a Grid in Batch EditMode, custom implementation is needed.
Completed
Last Updated: 21 Oct 2020 15:39 by ADMIN
Created by: Chris Vaughn
Comments: 0
Category: MultiSelect
Type: Bug Report
1

Scenario 1)

- Set MultiSelect1.Enabled=false; 
- Do a postback;

Expected: MultiSelect remain disabled
Actual: MultiSelect gets enabled

Workaround: set MultiSelect1.Enable = false instead of .Enabled.

Scenario 2)

- Add a MultiSelect inside asp:Panel
- Disable the asp:Panel

Expected: MultiSelect is disabled
Actual: MultiSelect remains enabled

 

Unplanned
Last Updated: 22 Jun 2020 17:19 by ADMIN
<telerik:RadFormDecorator ID="RadFormDecorator1" runat="server" RenderMode="Lightweight" DecoratedControls="All" />
<telerik:RadMultiSelect runat="server"
    AutoClose="false"
    Placeholder="Select attendees..."
    DataTextField="text"
    DataValueField="text"
    Width="400px"
    ID="RadMultiSelect2">
    <Items>
        <telerik:MultiSelectItem Text="Steven White"></telerik:MultiSelectItem>
        <telerik:MultiSelectItem Text="Nancy King"></telerik:MultiSelectItem>
        <telerik:MultiSelectItem Text="Nancy Davolio"></telerik:MultiSelectItem>
    </Items>
</telerik:RadMultiSelect>