how to know if 'Check All ' checkbox is checked

[Loyal User]

hi,

I have raddropdowntree , it works well ,
it has a checkbox  to check all nodes ,

what i  want is to know if this checkbox is checked or not (if all nodes are checked) from itemCommand event from server side ..

how to achieve that ,

[Shinu]

Hi,

The RadDropDownTree doesn't have ItemCommand event. Please have a look into the sample code snippet to check all nodes of RadDropDownTree is checked or not in onClick event of a RadButton. Please elaborate your requirement if it doesn't help.

ASPX:

<telerik:RadDropDownTree ID="raddroptreeCheckNodes" runat="server" ButtonSettings-ShowCheckAll="true" CheckBoxes="SingleCheck" DataSourceID="SqlDataSource1" DataFieldID="id" DataFieldParentID="parentid" DataTextField="text">
    <Localization CheckAll="All Items Checked" />
</telerik:RadDropDownTree>
<telerik:RadButton ID="radbtnCheckNodes" runat="server" Text="Get Checked Nodes"
    OnClick="radbtnCheckNodes_Click">
</telerik:RadButton>

C#:

protected void radbtnCheckNodes_Click(object sender, EventArgs e)
{
    int flag = 0;
    foreach (RadTreeNode node in raddroptreeCheckNodes.EmbeddedTree.GetAllNodes())
    {
        if (node.Checked == false)
        {
            flag = 1;
            break;
        }
    }
    if (flag == 0)
    {
        //all nodes are che checkd
        // your code
    }
}

Thanks,
Shinu.

[HoHo]

Hi Shinu,

 I have a question. If I don't have "RadButton" to fire the event, how do I fire the event when I just check "check all"? Since in , there is no event which is named "OnClientCheckAllButtonClicking" such like "OnClientClearButtonClicking"  

[Aneliya Petkova]

Hi HoHo,

You may use one of the server-events of RadDropDownTree control - for example OnEntriesAdded.
If this doesn't work for you, please explain your scenario in more details and provide us with a sample and we we will do our best to help you.

Regards,
Aneliya Petkova
Telerik

[HoHo]

Hello Aneliya,

Thank you for your reply! 

 My scenario is I have a and a button. The default setting of the button is disabled. Now, I want to let the button is enabled when I click "check all".   

 I do not know which event can be fired when I click  "check all".

[Aneliya Petkova]

Hi HoHo,

In this case, you can use jQuery to add click event on CheckAll element of the RadDropDownTree:

function pageLoad() {
    $telerik.$(".rddtCheckAll").on("click", function (e) {
        debugger;
        //Add your code here
    });
}

Regards,
Aneliya Petkova
Telerik

[HoHo]

Hi Aneliya, 

 It works well! Thank you for your help!