We have a RadListBox where we are adding and removing items via client side code (sample add shown):

ListBox_AddItem = function (listbox, text, value) {
    var item = new Telerik.Web.UI.RadListBoxItem();
    item.set_value(value);
    item.set_text(text);
    var attributes = item.get_attributes();
    attributes.setAttribute("Name", text);
    attributes.setAttribute("ID", value);
    listbox.trackChanges();
    listbox.get_items().add(item);
    item.bindTemplate();
    listbox.commitChanges();

    return false;
}

<telerik:RadListBox runat="server" ID="RadListBox" ClientIDMode="AutoID"
                                        OnClientLoad="RadListBox_OnClientLoad">
                                        <ItemTemplate>
                                            <table>
                                                <tr>
                                                    <td>
                                                        <%# Eval("Name") %>
                                                    </td>
                                                    <td id="DeleteColumn" style="float: right">
                                                        <a href="" onclick="return deleteRequestedBy('<%# Eval("id") %>')">
                                                            <img src="Images/deletered.png" width="20" height="20" alt="submit" />
                                                        </a>
                                                    </td>
                                                </tr>
                                            </table>
                                        </ItemTemplate>
                                        <ClientItemTemplate>
                                            <table>
                                                <tr>
                                                    <td>
                                                        #= Attributes.Name#
                                                    </td >
                                                    <td id="DeleteColumn" style="float:right">
                                                        <a href="" onclick="return deleteRequestedBy('#= Attributes.ID#')">
                                                            <img src="Images/deletered.png" width="20" height="20" alt="submit" />
                                                        </a>
                                                    </td>
                                                </tr>
                                            </table>
                                        </ClientItemTemplate>

                                    </telerik:RadListBox>

The ListBox is in a Tab on a RadTabStrip. When we add or remove items from the ListBox and then click on one of the other tabs we get an error:

Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

at System.Collections.ArrayList.get_Item(Int32 index)
at System.Web.UI.StateManagedCollection.System.Collections.IList.get_Item(Int32 index)
at Telerik.Web.UI.ControlItemCollection.get_Item(Int32 index)
at Telerik.Web.UI.ClientStateLogPlayer`1.Remove(ControlItemCollection items, Int32 index)
at Telerik.Web.UI.ClientStateLogPlayer`1.Play(ClientStateLogEntry entry)
at Telerik.Web.UI.ClientStateLogPlayer`1.Play(IEnumerable`1 clientStateLogEntry)
at Telerik.Web.UI.RadListBox.LoadLogEntries(RadListBoxClientState clientState)
at Telerik.Web.UI.RadListBox.LoadClientState(RadListBoxClientState clientState)
at Telerik.Web.UI.RadListBox.LoadPostData(String postDataKey, NameValueCollection postCollection)
at Telerik.Web.UI.RadDataBoundControl.System.Web.UI.IPostBackDataHandler.LoadPostData(String postDataKey, NameValueCollection postCollection)
at System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

I've tried the solutions suggested (along with some variations):

https://www.telerik.com/forums/transfer-throws-exception

https://docs.telerik.com/devtools/aspnet-ajax/controls/listbox/troubleshooting/index-out-of-range-on-item-transfer-

However, none of the suggestions worked and don't seem to quite apply in this scenario i.e. we are not transferring.

 

 

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Hi,

I am using RadclientDatasource to bind data unto grid. it is working fine. but i want to pass parameter based on selection. Please check my code and let me know how to pass parameter while selecting and Inserting

<telerik:RadClientDataSource ID="RadClientDataSource1" runat="server" AllowBatchOperations="True">
            <ClientEvents OnCustomParameter="ParameterMap" OnDataParse="Parse" OnRequestFailed="rg_OnRequestFailed" />
            <DataSource>
                <WebServiceDataSourceSettings BaseUrl="/BackStage/BackStageWCFService.svc/">
                    <Select Url="getLocation" DataType="JSON" />                   
                    <Insert Url="InsertLocation" DataType="JSON" />                
                </WebServiceDataSourceSettings>
            </DataSource>
            <Schema>
                <Model ID="att_typ_id">
                    <telerik:ClientDataSourceModelField FieldName="prt_loc_id" DataType="Number" />
                    <telerik:ClientDataSourceModelField FieldName="effective_date" DataType="Date" />
                    <telerik:ClientDataSourceModelField FieldName="termination_date" DataType="String" />
                    <telerik:ClientDataSourceModelField FieldName="rep_loc_code" DataType="String" />
                    <telerik:ClientDataSourceModelField FieldName="rep_loc_id" DataType="Number" />
                    <telerik:ClientDataSourceModelField FieldName="pln_prt_id" DataType="Number" />
                </Model>
            </Schema>
        </telerik:RadClientDataSource>

Javascript
-------------
function ParameterMap(sender, args) {
               
               if (args.get_type() == "read") {                  
                    args.set_parameterFormat({ customersJSON: kendo.stringify(args.get_data().models) });
                }             
            }

Appcode
-------------
<WebGet()> _
<AspNetCacheProfile("NoCache")> _
    Public Function getLocation() As LocationResult
        Dim entities As New EnrollmentEntities()
        Return New LocationResult() With { _
          .Data = entities.PART_REPORTING_LOCATIONS.Where(Function(d) d.PRT_LOC_ID = Here need to pass parameter).ToList().[Select](Function(c) New ServiceLocations() With { _
           .prt_loc_id = c.PRT_LOC_ID, _
           .termination_date = If(HttpUtility.HtmlEncode(c.TERMINATION_DATE) IsNot Nothing, HttpUtility.HtmlEncode(c.TERMINATION_DATE.Value.ToString("MM-dd-yyyy")), ""), _
           .effective_date = c.EFFECTIVE_DATE, _
           .rep_loc_code = HttpUtility.HtmlEncode(c.LEVEL_REP_LOC.REP_LOC_CODE), _
           .rep_loc_id = c.REP_LOC_ID, _
           .pln_prt_id = c.PLN_PRT_ID _
         }).ToList(), _
          .Count = 100 _
        }
    End Function


Please check my code and help ASAP


Thanks in advance,
Dhamu

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But in this example the wizard is not changing as window is resized.

Please help me ASAP.

 

 

Thanks,

Shabana

 

 

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Hi,

I have a RadGrid and we are doing some client side operations on it. But After Paging I am losing all the operations what we did previously using javascript. Help me so that all functionality remains unchanged after paging. Help me solving this. Here I will explain:


I have a Radgrid with one checkbox and one text box (By Default it will be "0"). using javascript If I check a checkbox the text in textbox must be changed to "100". If I did these operations and click paging and get return from paging all the functionality is missing and get reset.

Help me how can we achieve this without losing functionality after paging.

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Find checkbox in the header of the RadGrid. I am looking for c# code. I am having the button outside radgrid. I am looping through the dataitem to find other columns.

I need to find am method to find the contorl in the header.

Thanks in advance.

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For example, when clicking the Page Right button or jumping to a page the Loading Panel is displayed but then a full page refresh occurs and nothing has updated.