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RadComboBox in FilterTemplate in RadGrid errors: Selection out of range Parameter name: value

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Grid

This is a migrated thread and some comments may be shown as answers.

Mosart asked on 07 May 2012, 10:22 PM

Forgive me if this issue has been addressed before, I've been searching for a full day and can't make any progress.

Scenario:
I have a RadGrid using Advanced Data Binding (NeedDataSource event). Initial binding (load), paging, sorting are working fine, but filtering is not. I have a RadComboBox in a FilterTemplate of a GridBoundColumn. The RadComboBox is populated in the ItemDataBound event of the RadGrid. I do not use SqlDataSource, binding is done in the code-behind.

After the RadComboBox is populated (using the same data source (but only one column) that populates the RadGrid), I remove the duplicate items. This is the work around I found to avoid an additional data source issuing another connection to the database just to get a column distinct. Again, the items left in the RadComboBox are distinct.

Error:
When I select an item from the RadComboBox, I get the following error:
Selection out of range Parameter name: value

Code:
RadGrid:

<telerik:RadGrid ID="RadGrid1" runat="server" AllowFilteringByColumn="True" EnableViewState="true"

CssClass="GridViewSforms" Skin="Web20" EnableEmbeddedSkins="False"

Height="510px" Width="941px" ShowStatusBar="True"

AlternatingItemStyle-BackColor="#ededed" ClientSettings-EnableRowHoverStyle="true"

AllowPaging="True" AllowSorting="True"

CellSpacing="0" GridLines="None"

AutoGenerateColumns="False" ShowGroupPanel="False"

EnableLinqExpressions="False" >

<ClientSettings AllowColumnsReorder="True" ReorderColumnsOnClient="True"

AllowDragToGroup="True" EnableRowHoverStyle="True">

<Scrolling AllowScroll="True" UseStaticHeaders="True" />

</ClientSettings>

<AlternatingItemStyle BackColor="#EDEDED" />

<MasterTableView CommandItemDisplay="Top" >

Column:

<telerik:GridBoundColumn DataField="CustomerProgramDescription"

Groupable="true" HeaderText="Program" UniqueName="CustomerProgramDescription">

<FilterTemplate>

<telerik:RadComboBox ID="RadComboBoxCustomerProgramDescription" runat="server"

AppendDataBoundItems="true"

DataTextField="CustomerProgramDescription"

DataValueField="CustomerProgramDescription"

OnClientSelectedIndexChanged="CustomerProgramDescriptionIndexChanged"

OnDataBound="RadComboBoxAllFilters_OnDataBound"

SelectedValue='<%# TryCast(Container,GridItem).OwnerTableView.GetColumn("CustomerProgramDescription").CurrentFilterValue %>'

Width="100px">

<Items>

<telerik:RadComboBoxItem Text="All" />

</Items>

</telerik:RadComboBox>

<telerik:RadScriptBlock ID="RadScriptBlockProgram" runat="server">

<script type="text/javascript">

function CustomerProgramDescriptionIndexChanged(sender, args) {

var tableView = $find("<%# TryCast(Container,GridItem).OwnerTableView.ClientID %>");

tableView.filter("CustomerProgramDescription", args.get_item().get_value(), "EqualTo");

}

</script>

</telerik:RadScriptBlock>

</FilterTemplate>

<ItemStyle Wrap="False" />

<HeaderStyle Wrap="false" />

</telerik:GridBoundColumn>

Code Behind (bind RadComboBox):

Protected Sub RadGrid1_ItemDataBound(sender As Object, e As Telerik.Web.UI.GridItemEventArgs) Handles RadGrid1.ItemDataBound



If TypeOf e.Item Is Telerik.Web.UI.GridFilteringItem Then

'Populate Filters by binding the combo to datasource

Dim filteringItem As Telerik.Web.UI.GridFilteringItem = CType(e.Item, Telerik.Web.UI.GridFilteringItem)

Dim myRadComboBox As Telerik.Web.UI.RadComboBox = DirectCast(filteringItem.FindControl("RadComboBoxCustomerProgramDescription"), Telerik.Web.UI.RadComboBox)

myRadComboBox.DataSource = myDataSet

myRadComboBox.DataTextField = "CustomerProgramDescription"

myRadComboBox.DataValueField = "CustomerProgramDescription"

myRadComboBox.ClearSelection()

myRadComboBox.DataBind()

End If

I'm new to the controls, and I hope you can shed some light.
Thank you!

22 Answers, 1 is accepted

answered on 10 May 2012, 03:33 AM

Thanks for your reply.

I noticed that this sample uses a SqlDataSource, which I don't. I've successfully accomplished the task with SqlDataSource before (just to try), but my challenge now is to do it with advanced databinding, (via NeedDataSource event). SqlDataSource (correct me if I'm wrong) is very database intensive in all postbacks/rebinds, and I'd much prefer to use local variable resources to bind (datasets).

Before I spend another full day trying, can you please inform if the sample you sent can be tweaked to use advanced data binding? I'm not getting anywhere with my assumptions.

Thanks for the help.
Mosart

answered on 15 May 2012, 01:26 PM

More info: I noticed that the event RadGrid1_ItemDataBound is not fired for ItemType FilteringItem when selecting a filter item from the RadComboBox, except when selecting "All". I populate the filtering RadComboBox on "TypeOf e.Item Is Telerik.Web.UI.GridFilteringItem".
Thank you for your reply. Please let me know if you need additional info. Looking forward to get this solved.
Mosart
(sorry, I can't get rid of the large font)

Server Error in '/' Application.

Selection out of range
Parameter name: value

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentOutOfRangeException: Selection out of range
Parameter name: value

Source Error:

An unhandled exception was generated during the execution of the
            current web request. Information regarding the origin and location of the
            exception can be identified using the exception stack trace below.

Stack Trace:


            [ArgumentOutOfRangeException: Selection out of range
Parameter name: value]
   Telerik.Web.UI.RadComboBox.PerformDataBinding(IEnumerable dataSource) +173
   Telerik.Web.UI.RadComboBox.OnDataSourceViewSelectCallback(IEnumerable data) +491
   System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) +33
   Telerik.Web.UI.RadComboBox.OnDataBinding(EventArgs e) +1256
   Telerik.Web.UI.RadComboBox.PerformSelect() +37
   System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +74
   Telerik.Web.UI.RadComboBox.DataBind() +70
   System.Web.UI.Control.DataBindChildren() +201
   System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +101
   System.Web.UI.Control.DataBind() +15
   System.Web.UI.Control.DataBindChildren() +201
   System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +101
   System.Web.UI.Control.DataBind() +15
   Telerik.Web.UI.GridItem.SetupItem(Boolean dataBind, Object dataItem, GridColumn[] columns, ControlCollection rows) +1018
   Telerik.Web.UI.GridTableView.CreateFilteringItem(Boolean useDataSource, GridColumn[] copiedColumnSet, GridTHead thead) +149
   Telerik.Web.UI.GridTableView.CreateControlHierarchy(Boolean useDataSource) +2065
   Telerik.Web.UI.GridTableView.CreateChildControls(IEnumerable dataSource, Boolean useDataSource) +828
   System.Web.UI.WebControls.CompositeDataBoundControl.PerformDataBinding(IEnumerable data) +66
   System.Web.UI.WebControls.DataBoundControl.OnDataSourceViewSelectCallback(IEnumerable data) +128
   System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) +33
   System.Web.UI.WebControls.DataBoundControl.PerformSelect() +143
   Telerik.Web.UI.GridTableView.PerformSelect() +38
   System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +74
   Telerik.Web.UI.GridTableView.DataBind() +375
   Telerik.Web.UI.GridTableView.Rebind() +99
   Telerik.Web.UI.GridFilterCommandEventArgs.ExecuteCommand(Object source) +941
   Telerik.Web.UI.RadGrid.OnBubbleEvent(Object source, EventArgs e) +199
   System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +37
   Telerik.Web.UI.GridItem.OnBubbleEvent(Object source, EventArgs e) +66
   System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +37
   Telerik.Web.UI.GridItem.OnBubbleEvent(Object source, EventArgs e) +142
   Telerik.Web.UI.GridItem.FireCommandEvent(String commandName, Object commandArgument) +80
   Telerik.Web.UI.RadGrid.RaisePostBackEvent(String eventArgument) +11796
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +176
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5563

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.272

answered on 18 May 2012, 04:25 PM

Vasil,

The DataSource used by the RadComboBox is the same used by the RadGrid (fed via NeedDataSource event). I have it now as a Session variable (dataset), so I know the datasource exists and is valid (it fills the grid and the combo on initial load). I think the problem is during the rebind of the grid, where it does not rebind the Filter items.

What I noticed (and I know I'm repeating myself) is that after seleting an item from the filter RadComboBox, the event ItemDataBound of the grid is not fired for the filter item type (TypeOf e.Item Is Telerik.Web.UI.GridFilteringItem). The event fires several times (to rebind dataItems, etc...) but none to type GridFilteringItem.

I have a better understanding of the problem with your answers, but still have no solution. Let me know what you can suggest within my scenario. Thank you.

With regards,
Mosart

Accepted

answered on 20 May 2012, 04:08 PM

THAT did the trick. Working perfectly.

I have two more issues in the same grid, please suggest if I should open new threads (I can't find answers for them):
1. Manually handled export to Excel via ItemCommand (RadGrid1.MasterTableView.ExportToExcel()) returns an error, because I have a column with a RadComboBox (in every row). During ItemCommand, the RadComboBox of the DataItem (row) can't be found (FindControl returns null). I'm not sure how the excel should be exported in this scenario. Ideally, the combo's selected text should be written to excel.
2. A textbox column filter does not respect the FilterDelay="3". Immediately after typing, the postback occurs (and obviously, discontinue typing as the refresh loses control focus).

Thank you for the help.
Mosart

Accepted

answered on 21 May 2012, 02:00 PM

Hi Mosart,

1. Set try with "ExportOnlyData = True" in the ExportSettings of RadGrid. Another solution will be to handle the grid's ItemDataBound event and hide the combo box and show your custom label with all values from the combo.

2. The FilterDelay property expects value is in milliseconds. So if you use "3" the filtering will happen immediately after typing. Try to set FilterDelay="3000", and see if it will work correctly.

All the best,
Vasil
the Telerik team

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answered on 15 Dec 2012, 03:11 PM

Hi Vasil,

I have RadComboBox1 and RadRomboBox2 in the filter template. I did the binding of the RadComboBoxes again in the ItemCreated event and it works perfectly fine. But my problem is that how can i populate RadComboBox1 based on the value selected in RadComboBox2. I am having data in a SharePoint list and both the RadComboBoxes are databound. To elaborate it further, if suppose i have 10 items each in Radcombobox 1 and RadComboBox2. I select a filter in RadComboBox2, i get one record which is fine. But there are 3 related data out of 10 in RadComboBox1. How can i show only 3 data in RadComboBox1. Its showing all 10 in RadComboBox1. Please Help.

Regards,
Mukul

answered on 30 Mar 2015, 10:10 AM

I'm expiriencing similar problem

I have Grid and 2 filters. Second filter is being filled based on selected value in first one.

Here is the code

protected void OnItemCreated(object sender, GridItemEventArgs e)

{

GridFilteringItem item = e.Item as GridFilteringItem;

if (item != null)

{

RadComboBox planIdCombo = (RadComboBox)item.FindControl("planIdFilterComboBox");

RadComboBox pbpIdCombo = (RadComboBox)item.FindControl("pbpIdFilterComboBox");

planIdCombo.DataSource = SNPConfigView.Select(t => t.PlanID).Distinct().OrderBy(t => t);

planIdCombo.DataBind();

planIdCombo.SelectedValue = e.Item.OwnerTableView.GetColumn("PlanId").CurrentFilterValue;

pbpIdCombo.DataSource = SNPConfigView.Where(t => t.PlanID == planIdCombo.SelectedValue || string.IsNullOrEmpty(planIdCombo.SelectedValue)).Select(t => t.PBPID).Distinct().OrderBy(t => t);

pbpIdCombo.DataBind();

pbpIdCombo.SelectedValue = e.Item.OwnerTableView.GetColumn("PbpId").CurrentFilterValue;

}

All is working fine untill you change First filter selected value (in case value in second filter was changed). It throws "Selection out of range Parameter name: value".

I even tried to add items to the second combobox manually (instead of binding it). In this case on code behind it doesn't throw exception but it does throw it on client side (javascript). Error is the same.

I've tried almost everything but still cannot make it work.

<telerik:GridBoundColumn DataField="PlanId" HeaderText="Plan ID" UniqueName="PlanId" AutoPostBackOnFilter="true" CurrentFilterFunction="EqualTo" ShowFilterIcon="false" FilterControlWidth="70px">

<ItemStyle CssClass="center"></ItemStyle>

<FilterTemplate>

<telerik:RadComboBox ID="planIdFilterComboBox" Width="60" AppendDataBoundItems="True" OnItemDataBound="OnPlanIdFilterComboItemDataBound"

SelectedValue='<%# Container.OwnerTableView.GetColumn("PlanId").CurrentFilterValue %>' runat="server" OnClientSelectedIndexChanged="PlanIdFilterComboIndexChanged">

<Items>

<telerik:RadComboBoxItem Text="All" Value="" />

</Items>

</telerik:RadComboBox>

<telerik:RadScriptBlock ID="planIdFilteringScripBlock" runat="server">

<script type="text/javascript">

function PlanIdFilterComboIndexChanged(sender, args) {

var tableView = $find("<%# Container.OwnerTableView.ClientID %>");

tableView.filter("PlanId", args.get_item().get_value(), "EqualTo");

}

</script>

</telerik:RadScriptBlock>

</FilterTemplate>

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="PBPID" HeaderText="PBP" UniqueName="PBPID" AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" ShowFilterIcon="false" FilterControlWidth="40px">

<HeaderStyle Width="70px"></HeaderStyle>

<ItemStyle CssClass="center"></ItemStyle>

<FilterTemplate>

<telerik:RadComboBox ID="pbpIdFilterComboBox" Width="60" EnableViewState="False" OnItemDataBound="OnPbpIdFilterComboItemDataBound"

SelectedValue='<%# Container.OwnerTableView.GetColumn("PBPID").CurrentFilterValue %>' runat="server" OnClientSelectedIndexChanged="PbpIdFilterComboIndexChanged">

</telerik:RadComboBox>

<telerik:RadScriptBlock ID="pbpIdFilteringScripBlock" runat="server">

<script type="text/javascript">

function PbpIdFilterComboIndexChanged(sender, args) {

var tableView = $find("<%# Container.OwnerTableView.ClientID %>");

tableView.filter("PBPID", args.get_item().get_value(), "EqualTo");

}

</script>

</telerik:RadScriptBlock>

</FilterTemplate>

</telerik:GridBoundColumn>

answered on 31 Mar 2015, 03:24 PM

gridissue.jpg

Hello, Vasil,

Here is stack trace:

at Telerik.Web.UI.RadComboBox.PerformDataBinding(IEnumerable dataSource)

at Telerik.Web.UI.RadComboBox.OnDataSourceViewSelectCallback(IEnumerable data)

at System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback)

at Telerik.Web.UI.RadComboBox.OnDataBinding(EventArgs e)

at Telerik.Web.UI.RadComboBox.PerformSelect()

at System.Web.UI.WebControls.BaseDataBoundControl.DataBind()

at Telerik.Web.UI.RadComboBox.DataBind()

at PDMWeb.EENRL.Views.Admin.SNPConfiguration.SNPConfiguration.OnItemCreated(Object sender, GridItemEventArgs e) in d:\PROJECTS\TMS\Main\5.2.2\Common\Solutions\Projects\PDMWeb\EENRL\Views\admin\SNPConfiguration\SNPConfiguration.ascx.cs:line 286

at Telerik.Web.UI.RadGrid.OnItemCreated(GridItemEventArgs e)

at Telerik.Web.UI.RadGrid.CallOnItemCreated(GridItemEventArgs e)

Here is grid markup:

<telerik:RadGrid runat="server" ID="snpGrid" Skin="Default" AutoGenerateColumns="False" Width="600px" AllowFilteringByColumn="True" OnNeedDataSource="OnNeedDataSource" OnItemCreated="OnItemCreated">

<GroupingSettings CaseSensitive="false"></GroupingSettings>

<MasterTableView NoMasterRecordsText="No records found" DataKeyNames="ID" EnableHierarchyExpandAll="true" Style="width: auto" CssClass="panel-body">

<Columns>

<ItemStyle CssClass="center"></ItemStyle>

<FilterTemplate>

<telerik:RadComboBox ID="planIdFilterComboBox" AllowCustomText="True" Width="60" AppendDataBoundItems="True" OnItemDataBound="OnPlanIdFilterComboItemDataBound"

SelectedValue='<%# Container.OwnerTableView.GetColumn("PlanId").CurrentFilterValue %>' runat="server" OnClientSelectedIndexChanged="PlanIdAuditFilterComboIndexChanged">

<Items>

<telerik:RadComboBoxItem Text="All" Value="" />

</Items>

</telerik:RadComboBox>

<telerik:RadScriptBlock ID="planIdFilteringScripBlock" runat="server">

<script type="text/javascript">

function PlanIdAuditFilterComboIndexChanged(sender, args) {

var tableView = $find("<%# Container.OwnerTableView.ClientID %>");

tableView.filter("PlanId", args.get_item().get_value(), "EqualTo");

var pbpIdFilter = window.SNP.pbpidFilter;

pbpIdFilter.set_value('');

}

</script>

</telerik:RadScriptBlock>

</FilterTemplate>

</telerik:GridBoundColumn>

<HeaderStyle Width="70px"></HeaderStyle>

<ItemStyle CssClass="center"></ItemStyle>

<FilterTemplate>

<telerik:RadComboBox ID="pbpIdFilterComboBox" Width="60" AllowCustomText="True" AppendDataBoundItems="True" OnItemDataBound="OnPbpIdFilterComboItemDataBound"

SelectedValue='<%# Container.OwnerTableView.GetColumn("PBPID").CurrentFilterValue %>' runat="server" OnClientSelectedIndexChanged="PbpIdAuditFilterComboIndexChanged">

<Items>

<telerik:RadComboBoxItem Text="All" Value="" />

</Items>

</telerik:RadComboBox>

<telerik:RadScriptBlock ID="pbpIdFilteringScripBlock" runat="server">

<script type="text/javascript">

function PbpIdAuditFilterComboIndexChanged(sender, args) {

var tableView = $find("<%# Container.OwnerTableView.ClientID %>");

tableView.filter("PBPID", args.get_item().get_value(), "EqualTo");

}

</script>

</telerik:RadScriptBlock>

</FilterTemplate>

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="SnpType" HeaderText="SNP Type" UniqueName="SnpType" AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" ShowFilterIcon="false" FilterControlWidth="110px">

<ItemStyle CssClass="center"></ItemStyle>

<FilterTemplate>

<telerik:RadComboBox ID="snpTypeFilterComboBox" Width="105px"

SelectedValue='<%# Container.OwnerTableView.GetColumn("SnpType").CurrentFilterValue %>' runat="server" OnClientSelectedIndexChanged="SNPTypeFilterComboIndexChanged">

<Items>

<telerik:RadComboBoxItem Text="All" Value="" />

<telerik:RadComboBoxItem Text="Chronic" Value="Chronic" />

<telerik:RadComboBoxItem Text="Dual" Value="Dual" />

<telerik:RadComboBoxItem Text="Institutional" Value="Institutional" />

</Items>

</telerik:RadComboBox>

<telerik:RadScriptBlock ID="snpTypeFilteringScripBlock" runat="server">

<script type="text/javascript">

function SNPTypeFilterComboIndexChanged(sender, args) {

var tableView = $find("<%# Container.OwnerTableView.ClientID %>");

tableView.filter("SnpType", args.get_item().get_value(), "EqualTo");

}

</script>

</telerik:RadScriptBlock>

</FilterTemplate>

</telerik:GridBoundColumn>

<telerik:GridCheckBoxColumn DataField="ESRD" HeaderText="ESRD" UniqueName="ESRD" ReadOnly="True" AutoPostBackOnFilter="true" CurrentFilterFunction="EqualTo" ShowFilterIcon="false" FilterControlWidth="40px">

<HeaderStyle Width="60px"></HeaderStyle>

<ItemStyle CssClass="center"></ItemStyle>

<FilterTemplate>

<telerik:RadComboBox ID="esrdFilterComboBox" Width="50px"

SelectedValue='<%# Container.OwnerTableView.GetColumn("ESRD").CurrentFilterValue %>' runat="server" OnClientSelectedIndexChanged="EsrdFilterComboIndexChanged">

<Items>

<telerik:RadComboBoxItem Text="All" Value="" />

<telerik:RadComboBoxItem Text="Yes" Value="True" />

<telerik:RadComboBoxItem Text="No" Value="False" />

</Items>

</telerik:RadComboBox>

<telerik:RadScriptBlock ID="esrdFilteringScripBlock" runat="server">

<script type="text/javascript">

function EsrdFilterComboIndexChanged(sender, args) {

var tableView = $find("<%# Container.OwnerTableView.ClientID %>");

tableView.filter("ESRD", args.get_item().get_value(), "EqualTo");

}

</script>

</telerik:RadScriptBlock>

</FilterTemplate>

</telerik:GridCheckBoxColumn>

<telerik:GridBoundColumn DataField="MonthOfEligibility" HeaderText="Months Of Eligibility" UniqueName="MonthOfEligibility" AutoPostBackOnFilter="true" CurrentFilterFunction="EqualTo" ShowFilterIcon="false" FilterControlWidth="30px">

<ItemStyle CssClass="center"></ItemStyle>

<FilterTemplate>

<telerik:RadComboBox ID="mothsOfEligFilterComboBox" Width="40px"

SelectedValue='<%# Container.OwnerTableView.GetColumn("MonthOfEligibility").CurrentFilterValue %>' runat="server" OnClientSelectedIndexChanged="MonthsOfEligFilterComboIndexChanged">

<Items>

<telerik:RadComboBoxItem Text="All" Value="" />

<telerik:RadComboBoxItem Text="1" Value="1" />

<telerik:RadComboBoxItem Text="2" Value="2" />

<telerik:RadComboBoxItem Text="3" Value="3" />

<telerik:RadComboBoxItem Text="4" Value="4" />

<telerik:RadComboBoxItem Text="5" Value="5" />

<telerik:RadComboBoxItem Text="6" Value="6" />

<telerik:RadComboBoxItem Text="7" Value="7" />

<telerik:RadComboBoxItem Text="8" Value="8" />

<telerik:RadComboBoxItem Text="9" Value="9" />

<telerik:RadComboBoxItem Text="10" Value="10" />

<telerik:RadComboBoxItem Text="11" Value="11" />

<telerik:RadComboBoxItem Text="12" Value="12" />

</Items>

</telerik:RadComboBox>

<telerik:RadScriptBlock ID="monthOfEligFilteringScripBlock" runat="server">

<script type="text/javascript">

function MonthsOfEligFilterComboIndexChanged(sender, args) {

var tableView = $find("<%# Container.OwnerTableView.ClientID %>");

tableView.filter("MonthOfEligibility", args.get_item().get_value(), "EqualTo");

}

</script>

</telerik:RadScriptBlock>

</FilterTemplate>

</telerik:GridBoundColumn>

</Columns>

<HeaderStyle CssClass="center"></HeaderStyle>

<NestedViewTemplate>

<div style="background-color: #EEEEEE; height: 100%;">

<div class="nestedView">

<div class="snp-title">

Additional information:

</div>

<asp:Panel runat="server"

Visible="<%# ((SNPConfiguration)Container.DataItem).SNPType == SNPConfigurationPresenter.Constatns.SNPType.Chronic.ToString() %>">

<table>

<tr>

<td style="vertical-align: top; width: 110px;">

<b>Chronic Types: </b>

</td>

<td>

<%# ((SNPConfiguration)Container.DataItem).ConfigurationDetails%>

</td>

</tr>

</table>

</asp:Panel>

<asp:Panel runat="server"

Visible="<%# ((SNPConfiguration)Container.DataItem).SNPType == SNPConfigurationPresenter.Constatns.SNPType.Dual.ToString() %>">

<table>

<tr>

<td style="vertical-align: top; width: 50px;">

<b>State:</b>

</td>

<td>

<%# ((SNPConfiguration)Container.DataItem).ConfigurationDetails%>

</td>

</tr>

</table>

</asp:Panel>

<asp:Panel runat="server"

Visible="<%# ((SNPConfiguration)Container.DataItem).SNPType == SNPConfigurationPresenter.Constatns.SNPType.Institutional.ToString() %>">

No Additional information

</asp:Panel>

</div>

</NestedViewTemplate>

</MasterTableView>

<ClientSettings>

<Scrolling AllowScroll="True" UseStaticHeaders="True" ScrollHeight="400px"></Scrolling>

<ClientEvents OnGridCreated="GridCreated" />

</ClientSettings>

</telerik:RadGrid>

I've tried to set AllowCustomText for comboboxes but it still throws exception on binding.

Please see screenshot in the attachments.

answered on 08 Apr 2015, 04:03 PM

Hi Sergey,

Indeed there is variable called cachedSelectedValue. It is set when the ClientState is load, and then it is used to select the value when the ComboBox binds.
This is meant to be done when the ViewState is loaded.

The grid fires ItemCreated event for items when it create them before Page_Load for loading their viewstate correctly. And then after Page_Load to create the structure for the new request.

If you like to change the DataSouce of the ComboBox you should change it after the Page_Load. When the grid create its new structure.

You can raise a flag in Page_Load, and then when you handle the OnItemCreated to make sure this flag is true, and only then to rebind the combo.

Regards,
Vasil
Telerik

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