Checked State lost in Combobox

[Erik Beyer]

Hi,

i am using a RadTreeview with CheckBoxes within a RadComboBox. Everything works fine, but the Combox collapses every time I Check a Node. I found a solution using the StopPropagation Function in JavaScripting preventing this behaviour, but now i am facing another problem: The Nodes I had checked are not checked anymore when submitting the form.

How can I prevent the ComboBox from collapsing AND persist the Checked States and reading them in code behind after submitting the form?

Following Code I use:

function StopPropagation(e) {
            if (!e) {
                e = window.event;
            }

            e.cancelBubble = true;
        }

<rad:RadComboBox ID="ddYearQuarterMonthDate" runat="server" Width="100%" Height="350px">
                                                    <ItemTemplate>
                                                        <div id="div1" onclick="StopPropagation(event);">
                                                        <rad:RadTreeView ID="radTreeViewYearQuarterMonthDate" runat="server" MultipleSelect="True" CheckBoxes="true"
                                                    TriStateCheckBoxes="false" CheckChildNodes="false" onclick="EmptyRadDatesAndRblTimespan();">
                                                        </rad:RadTreeView>
                                                        </div>
                                                    </ItemTemplate>
                                                    <Items>
                                                        <rad:RadComboBoxItem Text="" />
                                                    </Items>
                                                </rad:RadComboBox>

                               

[Veronica]

Hello Erik Beyer,

I'm glad you've figured out that by using the StopPropagation function you can disable the collapsing of the RadComboBox. I've created a sample project to show you RadTreeView in Combobox with checkboxes. Please note that if you ajaxify the combobox with AjaxPanel or AjaxManager - you will not be able to view the checked nodes after postback.

Please take a look at the attached .zip file and let me know if you have some questions.
 
Greetings,
Veronica Milcheva
the Telerik team

[Erik Beyer]

Unfortunately still no success. I am using exactly your code within my page, but still are no nodes are Checked within the code behind when hitting the submit button. Its not nested in a Updatepanel. Maybe its because of the fact that I am using this whole thing within a RadWindow?

[Erik Beyer]

... and when setting TriStateCheckBoxes="true" then everything works fine with no collapsing ComboBox, BUT: during PageLoad I check the nodes programmatically, from which the value i saved in my Session variable and they does not appear checked after page is loaded.

Here my code for checking the nodes programmatically:

ddYearQuarterMonthDate.Items.Add(new RadComboBoxItem(""));
            RadTreeNode treeParentNode = null;
            RadTreeView radTreeViewYearQuarterMonthDate = (RadTreeView)ddYearQuarterMonthDate.Items[0].FindControl("radTreeViewYearQuarterMonthDate");
            int level = 1;

            foreach (DataRow dr in dt.Rows)
            {
                if (Convert.ToInt16(dr["[Measures].[ParameterLevel]"]) > 0 && Convert.ToDateTime(dr["[Measures].[EntryDate]"]).Year > DateTime.Now.AddYears(-6).Year && Convert.ToDateTime(dr["[Measures].[EntryDate]"]) <= DateTime.Now)
                {
                    if (Convert.ToInt16(dr["[Measures].[ParameterLevel]"]) != level)
                    {
                        level = Convert.ToInt16(dr["[Measures].[ParameterLevel]"]);
                        treeParentNode = radTreeViewYearQuarterMonthDate.FindNodeByText(dr["[Measures].[ParameterParentCaption]"].ToString());
                    }

                    RadTreeNode treeChildNode = new RadTreeNode(dr["[Measures].[ParameterCaption]"].ToString(), dr["[Measures].[ParameterValue]"].ToString());

                    if (level == 1)
                        radTreeViewYearQuarterMonthDate.Nodes.Add(treeChildNode);
                    else
                        treeParentNode.Nodes.Add(treeChildNode);

                    if (SessionFacade.TimespanValue != null)
                        if (SessionFacade.TimespanValue.Contains(treeChildNode.Value))
                            treeChildNode.Checked = true;

                }
            }

[Elke Kaminski]

I have the same Problem. Can you guys from the suport team please help us out?!

Thanks
Claudio
(Business Intelligence Group GmbH)

[Veronica]

Hello Elke Kaminski,

Could you please open new support ticket and attach the full code so I can inspect it and help you?

Thank you!

Regards,
Veronica Milcheva
the Telerik team