I have a datagrid that contains a column which has an editable drop down list.
I have filtering set to true, but when you place text in the filter box and click "Equal To" or whatever clause, it breaks/errors out
I get Unhandled Exception error. Its a messing popup window with a bunch of jargon.
Anything I need to alter to make this work with that EditTemplate piece in there?
Here is the code
<telerik:GridTemplateColumn HeaderText="ConfirmationType" ItemStyle-Width="240px" AllowFiltering="True" ShowSortIcon="True">
<ItemTemplate>
<%#DataBinder.Eval(Container.DataItem, "ConfirmationType")%>
</ItemTemplate>
<EditItemTemplate>
<telerik:RadComboBox RenderMode="Lightweight" runat="server" ID="RadComboBox1" DataTextField="ConfirmationType" DataValueField="ConfirmationType" DataSourceID="ConfirmationType" SelectedValue='<%#Bind("ConfirmationType") %>'>
</telerik:RadComboBox>
</EditItemTemplate>
</telerik:GridTemplateColumn>
<GroupByExpressions> <telerik:GridGroupByExpression> <SelectFields> <telerik:GridGroupByField FieldAlias="Bundle" FieldName="GroupName" HeaderValueSeparator="_" /> </SelectFields> <GroupByFields> <telerik:GridGroupByField FieldName="GroupName" SortOrder="None"/> </GroupByFields> </telerik:GridGroupByExpression></GroupByExpressions>

I am using this example
http://docs.telerik.com/devtools/aspnet-ajax/controls/grid/how-to/Filtering/radgrid-filtered-by-radcombobox
I want to choose the data for the grid by selecting an item in a drop down list.
I want to initialise the grid from the code behind.
How do I do this? My grid is not refreshing at the moment.
This is the code for my aspx page
<div class="panel panel-primary">
<div class="panel-heading">
Your Notes
</div>
</div>
<telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanelN"></telerik:RadAjaxLoadingPanel>
<telerik:RadDropDownList runat="server" ID="RadDropDownStudents" DefaultMessage="Select a student" DropDownWidth="300px" Width="350px"
DataValueField="student_id" DataTextField="Studentname" OnItemSelected="RadDropDownStudents_ItemSelected"
OnSelectedIndexChanged="RadDropDownStudents_SelectedIndexChanged" AutoPostBack="true">
</telerik:RadDropDownList>
<telerik:RadGrid runat="server" ID="RadGridNotes" ShowFooter="false" Width="100%" enableajax="true" ShowStatusBar="true" OnItemCommand="Grid_RowSelect"
allowaddingrecords="false" AutoGenerateColumns="false" AllowSorting="false" allowpagesizeselection="False" OnItemDataBound="OnItemDataBoundHandler" Autobind="false"
AllowPaging="True" Skin="Bootstrap" PageSize="5" OnNeedDataSource="RadGridNotes_NeedDataSource" OnPreRender="RadGridNotes_PreRender" CssClass="table table-striped">
<MasterTableView AutoGenerateColumns="false" DataKeyNames="note_ref" TableLayout="Auto" EditMode="EditForms">
<Columns>
<telerik:GridButtonColumn CommandName="View" HeaderStyle-BackColor="#428bca" HeaderStyle-ForeColor="White" HeaderStyle-Font-Bold="true" HeaderStyle-HorizontalAlign="Center" HeaderStyle-VerticalAlign="Middle" Text="View" UniqueName="View">
</telerik:GridButtonColumn>
<telerik:GridBoundColumn DataField="note_ref" DataType="System.Int32" HeaderText="note_ref" HeaderStyle-BackColor="#428bca" HeaderStyle-ForeColor="White" HeaderStyle-Font-Bold="true" HeaderStyle-HorizontalAlign="Center" HeaderStyle-VerticalAlign="Middle" UniqueName="note_ref" Display="false" runat="server" ReadOnly="true">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="course" HeaderText="code" HeaderStyle-BackColor="#428bca" HeaderStyle-ForeColor="White" HeaderStyle-Font-Bold="true" HeaderStyle-HorizontalAlign="Center" HeaderStyle-VerticalAlign="Middle" UniqueName="course" Display="false" runat="server" ItemStyle-Width="10px" HeaderStyle-Width="10px">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="courseName" HeaderText="Subject" HeaderStyle-BackColor="#428bca" HeaderStyle-ForeColor="White" HeaderStyle-Font-Bold="true" HeaderStyle-HorizontalAlign="Center" HeaderStyle-VerticalAlign="Middle" UniqueName="qualname" HeaderStyle-Width="200px" ItemStyle-Width="200px" ItemStyle-HorizontalAlign="Left" ItemStyle-Wrap="true">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="NewNoteType" HeaderText="Type" HeaderStyle-BackColor="#428bca" HeaderStyle-ForeColor="White" HeaderStyle-Font-Bold="true" HeaderStyle-HorizontalAlign="Center" HeaderStyle-VerticalAlign="Middle" UniqueName="noteType" Display="false">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="typeDesc" HeaderText="Note Type" HeaderStyle-BackColor="#428bca" HeaderStyle-ForeColor="White" HeaderStyle-Font-Bold="true" HeaderStyle-HorizontalAlign="Center" HeaderStyle-VerticalAlign="Middle" UniqueName="typeDesc" ItemStyle-HorizontalAlign="Left" ItemStyle-Wrap="true">
</telerik:GridBoundColumn>
<telerik:GridDateTimeColumn DataField="created" HeaderText="Created" HeaderStyle-BackColor="#428bca" HeaderStyle-ForeColor="White" HeaderStyle-Font-Bold="true" HeaderStyle-HorizontalAlign="Center" HeaderStyle-VerticalAlign="Middle" UniqueName="created" DataFormatString="{0:dd/MM/yyyy}">
</telerik:GridDateTimeColumn>
<telerik:GridBoundColumn DataField="created_by" HeaderText="Created" HeaderStyle-BackColor="#428bca" HeaderStyle-ForeColor="White" HeaderStyle-Font-Bold="true" HeaderStyle-HorizontalAlign="Center" HeaderStyle-VerticalAlign="Middle" UniqueName="created_by" Display="false" ItemStyle-HorizontalAlign="Left">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn DataField="note_content" HeaderText="Created" HeaderStyle-BackColor="#428bca" HeaderStyle-ForeColor="White" HeaderStyle-Font-Bold="true" HeaderStyle-HorizontalAlign="Center" HeaderStyle-VerticalAlign="Middle" UniqueName="note_content" Display="false" ItemStyle-HorizontalAlign="Center">
</telerik:GridBoundColumn>
</Columns>
<EditFormSettings EditFormType="Template">
<EditColumn UniqueName="View">
</EditColumn>
<FormTemplate>
<table style="width: 100%" border="0">
<tr>
<td><b>Details</b><br /><br />
<asp:Label ID="LabelDetails" runat="server" Text='<%# Bind("note_content") %>'></asp:Label>
</td>
</tr>
</table>
</FormTemplate>
</EditFormSettings>
<PagerStyle Mode="NextPrev" Position="Bottom" PageSizeControlType="RadComboBox"></PagerStyle>
</MasterTableView>
<ClientSettings EnablePostBackOnRowClick="True">
<Selecting AllowRowSelect="True" />
<ClientEvents OnRowDblClick="RowDblClick" OnRowSelected="RowSelected" />
</ClientSettings>
Hi,
I am creating a multiple ComboBox. RadComboBox1 for region and the other RadComboBox2 for product. Both controllers have a checkbox option. Sample data as per below;
RadComboBox1;
A
B
C
RadComboBox2;
1
2
3
What do I need are, when user choose Region [A,C] and product [1,2,3], the result would be [A1,A2,A3,C1,C2,C3]. Please help.
Thanks.

To whoever cares:
Why don't you just get rid of the Telerik name and quit moving incrementally in that direction. The need to stamp Progress on everything is now literally moving useful information out of sight.
Unable to get property 'trackChanges' of undefined or null reference in IE 9 and above and chrome. No issues in IE 8. Using jQuery on page load.
var resultsDropDowlist = Terlerk.web.UI.RadComboBox.ComboBoxes[2];
resultsDropDownlist.trackChanges();
//To Clear the Selected Item
resultsDropDownList.get_items().clear();
Hello!
I try to create dynamic url like https://mylink.com/?parameter1={0}¶meter2={1}, but I can get only single parameter from field DataNavigateUrlFields="myfield".
Any ideas?
After that, I tried to resolve my issue dynamically with code:
protected void OrdersRadGrid_ItemDataBound(object sender, GridItemEventArgs e)
{
if (e.Item is GridDataItem)
{
GridDataItem item = (GridDataItem)e.Item;
TableCell tb = item["item1"];
HyperLink lnk = new HyperLink();
lnk.ID = "routeId";
lnk.Text = item["item1"].Text;
string str1 = item["item2"].Text;
string str2 = item["item3"].Text;
lnk.NavigateUrl = string.Format("https://mylink.com/?parameter={0}{1}", str1, str2);
tb.Controls.Clear();
tb.Controls.Add(lnk);
}
}
But, I get an interesting bug: in construction item["item"].Text not all fields displays correct. In debugger, i can see in the item all the fields with their correct values. But some of them (right these I need to use!), give me ' ' value. Thus, expression siring str=item["item1"].Text returns me value ' ' (not in all text type fields, but only in several in the same item). May it be encoding problem? Or any other ideas?