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Selecting one single node

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DropDownTree
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César
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César asked on 06 Nov 2013, 11:15 AM
Hi,

Is there any way to configure the control to only allow to select one single item? I.e. when selecting one item, deselecting the rest of them? 

If not, which would be the best way?

Thanks

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Princy
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answered on 07 Nov 2013, 06:21 AM
Hi C├ęsar,

I guess you are using CheckBoxes to select an item of RadDropDownTree. Please have a look into the code snippet to allow only one item to select at a time.

ASPX:
<telerik:RadDropDownTree ID="RadDropDownTree" runat="server" DataSourceID="SqlDataSource1"
    DataFieldID="id" DataFieldParentID="parentid" DataTextField="text" CheckBoxes="SingleCheck" OnClientEntryAdding="OnClientEntryAdding1">
</telerik:RadDropDownTree>

JavaScript:
<script type="text/javascript">
    function OnClientEntryAdding1(sender, args) {
        if (sender.get_entries().get_count() > 0) {
            sender.get_entries().clear();
        }
    }
</script>

Thanks,
Princy.
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César
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answered on 07 Nov 2013, 09:05 AM
It perfectly works.

I also found that setting the property "CheckBoxes" to none, was covering the requirement, but was hiding the CheckBoxes:

<telerik:RadDropDownTree ID="RadDropDownTree" runat="server" DefaultMessage="Please select" CheckBoxes="None"  Width="340px"
            DataFieldID="ID" DataFieldParentID="ParentID" DataTextField="Text" DataValueField="Value" 
            TextMode="Default" ExpandNodeOnSingleClick="false">
            <DropDownSettings AutoWidth="Enabled" />
        </telerik:RadDropDownTree>


I still prefer your solution.

Thanks 
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MARS-Jainith
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answered on 15 Nov 2013, 10:37 AM
Hi
I get RadDropDownTree selected value for previous selection even i tried below code
<telerik:RadDropDownTree runat="server" ID="RadDropDownTreeAccounts" Skin="Metro"
                                            Width="250px" DefaultMessage="Choose an account" DefaultValue="0"
                                            DataTextField="AccountName" CheckBoxes="None"    
                                            DataFieldID="AccountNumber" DataValueField="AccountNumber"
                                            DataFieldParentID="DepartmentID" Visible="false"
                                            OnClientEntryAdded="onEntryAdded" OnClientEntryAdding="OnClientEntryAdding1"
                                            ></telerik:RadDropDownTree>
      <script language="javascript" type="text/javascript">
     function onEntryAdded(sender, eventArgs) {
         sender.closeDropDown();
         $(".rddtInner").removeClass("rddtFocused");
     }
     function OnClientEntryAdding1(sender, args) {
         if (sender.get_entries().get_count() > 0) {
             sender.get_entries().clear();
         }
     }
    </script>                                 

How to select selected value of Raddropdowntree to only current select value?


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Princy
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answered on 15 Nov 2013, 12:01 PM
Hi MARS-Jainith,

Please try the following ASPX to set the current value as the selected value of  RadDropDownTree. If you are setting the CheckBoxex property of RadDropDownTree as None then there is no need of the client side code. By default RadDropDownTree will allow to select a single Item.

ASPX:
<telerik:RadDropDownTree ID="RadDropDownTree" runat="server" DataSourceID="SqlDataSource1"
    DataFieldID="id" DataFieldParentID="parentid" DataTextField="text" CheckBoxes="None"
    DefaultMessage="Choose a value" DefaultValue="0" Skin="Metro">
</telerik:RadDropDownTree>

Thanks,
Princy.
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MARS-Jainith
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answered on 15 Nov 2013, 12:08 PM
Hi Princy,

Which parameter is used to set current value as the selected value of  RadDropDownTree?
I used all parameters in your code, but got the same problem.

Thanks
Jain
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Princy
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answered on 20 Nov 2013, 08:21 AM
Hi MARS-Jainith,

The default behavior of RadDropDownTree is that it will allow to select only one item at a time. If the Checkboxes property of the RadDropDown tree is set it as None then the RadDropDownTree will allow to select the current Item only. Please have a look into the sample code snippet to set the current item as selected.

ASPX:
<telerik:RadDropDownTree ID="RadDropDownTree" runat="server" DataSourceID="SqlDataSource1"
    DataFieldID="id" DataFieldParentID="parentid" DataTextField="text" DefaultMessage="Choose a value"
    DefaultValue="0" Skin="Metro" CheckBoxes="None">
</telerik:RadDropDownTree>

Please provide your full code if it doesn't help.
Thanks,
Princy.
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César
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MARS-Jainith
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