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Version Q2 2011 released 07/12/2011
select

Input / Handle OnError Event

RadDateInput
Enter an invalid or predefined date:
Predefined dates
  • Today
  • Yesterday
  • Tomorrow
  • Christmas

  • This online demo presents how to handle the OnError client-side event of the RadDateInput to process some custom logic when the user enters invalid input or the date is out of range.

    For this case specifically we demonstrate replacing the invalid entry with a new date/corresponding date value from an array depending on whether the input is recognized as invalid/outside of the date range bounds.

    To test the aforementioned behavior you should enter one of the predefined strings (christmas, today, tomorrow or yesterday). Alternatively you can click on the bulleted list onto the right table directly.

Source Code

C# VB.NET
Show code in new window Demo isolation steps
  • <%@ Page Language="c#" CodeFile="DefaultCS.aspx.cs" AutoEventWireup="false" Inherits="Telerik.InputExamplesCS.RadDateInput.HandleErrorEvent.DefaultCS" %>

    <%@ Register TagPrefix="qsf" TagName="Footer" Src="~/Common/Footer.ascx" %>
    <%@ Register TagPrefix="qsf" TagName="HeadTag" Src="~/Common/HeadTag.ascx" %>
    <%@ Register TagPrefix="qsf" TagName="Header" Src="~/Common/Header.ascx" %>
    <%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
    <%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
        <qsf:HeadTag runat="server" ID="Headtag1"></qsf:HeadTag>
        <style type="text/css">
            .ulStyle li
            {
                border-bottom: solid 1px #eeeeee;
                margin-right: 30px;
                list-style-type: none;
                padding-left: 10px;
            }
            .rfdHeading h6
            {
                font-size: 8pt;
                font-weight: normal;
                margin: 0 0 0 0;
                padding-top: 10px;
            }
            .divBack
            {
                padding: 20px 0 20px 0;
            }
        </style>
    </head>
    <body class="BODY">
        <form id="Form1" method="post" runat="server">
        <qsf:Header runat="server" ID="Header1" NavigationLanguage="C#"></qsf:Header>
        <telerik:RadScriptManager ID="RadScriptManager1" runat="server" />
        <telerik:RadFormDecorator ID="RadFormDecorator1" runat="Server" DecoratedControls="All"
            DecorationZoneID="decorationZone1" />
        <!-- content start -->
        <telerik:RadCodeBlock ID="RadCodeBloc1" runat="server">

            <script type="text/javascript">
                     //<![CDATA[
            function clearInput(sender, args)
            {
                $find('<%= RadDateInput1.ClientID %>').clear();
            }

            function Error(sender, args)
            {
                switch (args.get_reason())
                {
                    case Telerik.Web.UI.InputErrorReason.ParseError:
                        HandleDateParseError(sender, args.get_inputText().toUpperCase(), args);
                        break;
                    case Telerik.Web.UI.InputErrorReason.OutOfRange:
                        HandleDateOutOfRange(sender, args);
                        break;
                }
            }

            function trim(str)
            {
                return str.replace(/ /g, "");
            }

            function HandleDateParseError(radDateInput, inputText, args)
            {
                var now = new Date();

                args.set_cancel(true);

                var specialDays =
                             new Array(
                                     { DayName: "CHRISTMAS", Date: new Date(now.getFullYear(), 11, 25) },
                                     { DayName: "TODAY", Date: new Date() },
                                     { DayName: "TOMORROW", Date: new Date(now.getFullYear(), now.getMonth(), now.getDate() + 1) },
                                     { DayName: "YESTERDAY", Date: new Date(now.getFullYear(), now.getMonth(), now.getDate() - 1) }
                                     );
                var i;
                for (i = 0; i < specialDays.length; i++)
                {
                    if (specialDays[i].DayName == trim(inputText).toUpperCase())
                    {
                        radDateInput.set_selectedDate(specialDays[i].Date);
                        break;
                    }
                }
            }

            function HandleDateOutOfRange(radDateInput, args)
            {
                args.set_cancel(true);
                radDateInput.set_selectedDate(new Date());
            }
                     //]]>
            </script>

        </telerik:RadCodeBlock>
        <div class="divBack" id="decorationZone1">
            <table style="margin: 0 auto; padding-left: 10px;">
                <tr>
                    <td style="padding: 10px; width: 50%">
                        <fieldset style="width: 220px; height: 110px; margin: 0 auto; padding: 0; text-align: center;">
                            <legend>RadDateInput </legend>
                            <div>
                                <h6>
                                    Enter an invalid or predefined date:</h6>
                                <div style="padding: 5px;">
                                    <telerik:RadDateInput ID="RadDateInput1" runat="server" ToolTip="Please enter an invalid or predefined date">
                                        <ClientEvents OnError="Error" />
                                    </telerik:RadDateInput>
                                </div>
                                <input type="button" onclick="clearInput()" value="Clear" />
                                <br />
                            </div>
                        </fieldset>
                    </td>
                    <td style="padding: 10px; width: 50%">
                        <fieldset style="width: 160px; height: 110px;">
                            <legend>Predefined dates</legend>
                            <div>
                                <ul class="ulStyle" style="margin-top: 0px; padding-top: 15px;">
                                    <li>Today</li>
                                    <li>Yesterday</li>
                                    <li>Tomorrow</li>
                                    <li>Christmas</li>
                                </ul>
                            </div>
                        </fieldset>
                    </td>
                </tr>
            </table>
        </div>
        <!-- content end -->
        <qsf:Footer runat="server" ID="Footer1"></qsf:Footer>
        </form>
    </body>
    </html>

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