Default Button is not working

[Mona]

Hello All,

I have a default button which clicks on enter key press. But if the cursor is on the RadCombo box then the enter key is not working. Please help me. I am writing the code for this.

<asp:Panel ID="Panel1" runat="server" DefaultButton="btnUpdate">
    <div style="position: relative; height: 135px; width: 100%; padding-top: 5px; background-color: #ffe5ad;">
        <asp:ValidationSummary ID="VSReqTrak" ShowSummary="false" HeaderText="Please complete the required fields."
            ShowMessageBox="true" runat="server" />
        <span style="position: absolute; top: 20px; left: 0px; width: 120px; text-align: right;">
            Category: </span>
        <asp:RequiredFieldValidator ErrorMessage="" Text="*" ControlToValidate="rcbCategory"
            Style="position: absolute; top: 21px; left: 123px; height: 20px;" ID="RFVCategory"
            runat="server" SetFocusOnError="true" Display="Dynamic"></asp:RequiredFieldValidator>
        <telerik:RadComboBox ID="rcbCategory" runat="server" Width="210px" Style="position: absolute;
            top: 20px; left: 140px;" MarkFirstMatch="true" DataSourceID="ObjCategories" DataTextField="CategoryName"
            AllowCustomText="true" SelectedValue='<%# DataBinder.Eval( Container, "DataItem.CategoryID" ) %>'
            DataValueField="CategoryID">
        </telerik:RadComboBox>
        
            <asp:ImageButton ID="btnUpdate" ToolTip="Update" ImageUrl="~/Images/Update.gif" Text="Update"
            Style="position: absolute; top: 90px; left: 650px;" runat="server" Visible='<%# !(DataItem is Telerik.Web.UI.GridInsertionObject) %>'
            CommandName="Update" />
        <asp:ImageButton ID="btnCancel" ToolTip="Cancel" ImageUrl="~/Images/Cancel.gif" Text="Cancel"
            Style="position: absolute; top: 90px; left: 680px;" runat="server" CausesValidation="False"
            CommandName="Cancel" />
    </div>
</asp:Panel>

[Simon]

Hello Mona,

You can avoid this by putting the following JavaScript code on your page (after the ScriptManager):

<script type="text/javascript">
    var $p = Telerik.Web.UI.RadComboBox.prototype;
    var keyDownHandler = $p._onKeyDown;
    $p._onKeyDown = function (e) {
        var oReturnValue = e.returnValue;
        var oPreventDefault = e.preventDefault;
        var keyCode = e.keyCode || e.which;
        if (keyCode === 13)
            e.preventDefault = null;
        keyDownHandler.call(this, e);
        if (keyCode === 13) {
            e.returnValue = oReturnValue;
            e.preventDefault = oPreventDefault;
        }
    };
</script>

Sincerely yours,
Simon
the Telerik team

[Thad]

Simon,

Thanks for answering this question for Mona and also myself in another post.

One caveat to your solution, though, is that you are not checking to see if the dropdown is visible.  Don't you need to utilize the .get_dropDownVisible() method of the RadComboBox so that the default button is not clicked when the dropdown is visible?

In your posted code, what is the easiest way to get a reference do the control that fired this event so that I can check to see if the dropdown is visible?

Here is a reference to my post:
http://www.telerik.com/community/forums/aspnet-ajax/combobox/enter-key-not-firing-panel-s-defaultbutton-in-ie-chrome.aspx

Thanks!!
Thad

[Simon]

Hello Thad,

Yes, you can verify whether the drop down is closed in the event handler if this is your requirement, e.g.

$p._onKeyDown = function (e) {
        ...
        if (keyCode === 13 && !this.get_dropDownIsVisible())
            e.preventDefault = null;
        keyDownHandler.call(this, e);
        if (keyCode === 13 && !this.get_dropDownIsVisible()) {
            e.returnValue = oReturnValue;
            e.preventDefault = oPreventDefault;
        }
    };

As you can see in the code above this holds a reference to the RadComboBox client-side object, so you can use it to call methods/properties of the control.

I hope this helps.

Regards,
Simon
the Telerik team

[Thad]

Thanks, Simon!

Thad

[Mona]

Thanks All

[Sathish]

The code snippet mentioned in this thread throws an "Too much recursion" error in firefox. Any other way of handling default button problem?

[Simon]

Hello Sathish,

You do not need this code for FireFox as there the issue does not exist. You can use $telerik.isFirefox to detect the browser.

All the best,
Simon
the Telerik team