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RadCalendar Ajax

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Calendar

This is a migrated thread and some comments may be shown as answers.

John Giblin asked on 07 Jul 2010, 05:23 PM

I have a RadCalendar that it use to update the content in a Iframe when the date selected has changed. It seems when I use the arrows to change the month or year, it appears to make a new request as opposed to an Ajax Request. I see in a tool it contains the entire page content. When I put break points in my code I do see the request going to the page load. any ideas why it is doing this?

    <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server"
        onajaxrequest="RadAjaxManager1_AjaxRequest">
        <AjaxSettings>
            <telerik:AjaxSetting AjaxControlID="rcStartDate">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="rcStartDate"></telerik:AjaxUpdatedControl>
                    <telerik:AjaxUpdatedControl ControlID="lbTitle" />
                    <telerik:AjaxUpdatedControl ControlID="lbFilename" />
                    <telerik:AjaxUpdatedControl ControlID="lbStartDate" />
                    <telerik:AjaxUpdatedControl ControlID="iframe" />
                </UpdatedControls>
            </telerik:AjaxSetting>
        </AjaxSettings>
    </telerik:RadAjaxManager>

             <telerik:RadCalendar ID="rcStartDate" runat="server" Font-Names="Arial, Verdana, Tahoma"
                    ForeColor="Black" FirstDayOfWeek="Monday" AutoPostBack=true
                    Skin="Web20" ondayrender="rcStartDate_DayRender"
                    onselectionchanged="rcStartDate_SelectionChanged" MultiViewRows=2
                    EnableMultiSelect="False">
                            <SelectedDayStyle CssClass="SelectedDatesCSS" />
                            <ClientEvents OnDayRender="OnDayRender" />
                    </telerik:RadCalendar>

             <telerik:RadCalendar ID="rcStartDate" runat="server" Font-Names="Arial, Verdana, Tahoma"
                    ForeColor="Black" FirstDayOfWeek="Monday" AutoPostBack=true
                    Skin="Web20" ondayrender="rcStartDate_DayRender"
                    onselectionchanged="rcStartDate_SelectionChanged" MultiViewRows=2
                    EnableMultiSelect="False">
                            <SelectedDayStyle CssClass="SelectedDatesCSS" />
                            <ClientEvents OnDayRender="OnDayRender" />
                    </telerik:RadCalendar>

5 Answers, 1 is accepted

answered on 12 Jul 2010, 01:48 PM

Hello John,

Note that the Ajax enabled application still goes to the PageLoad event and this is expected. The core idea behind AJAX is to make the communication with the server asynchronous, so that data is transferred and processed in the background. So the data is silently update, however the PageLifeCycle is not changed. In the request from the server you should see only information for the controls added in the updated controls collection.

Regards,
Maria Ilieva
the Telerik team

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answered on 15 Jul 2010, 04:22 PM

Thanks for the explanation. I wasnt sure if the PageLoad was suppose to get execute

The problem that I am having is that when I change the date on the calandar it reloads the iframe in the page. The only time I change the Iframe is when SelectionChanged is triggered. Is their a way for the iframe not to be re-loaded. Nothing in the parent page is triggering it. Below is the Selection change

protected void rcStartDate_SelectionChanged(object sender, Telerik.Web.UI.Calendar.SelectedDatesEventArgs e)

{

// LoadSpecialDays();

PostedReportsBusinessLayer objposted = new PostedReportsBusinessLayer();

DataTable dt = objposted.GetLatestReport(catId, rcStartDate.SelectedDate);

if (dt.Rows[0]["Title"] .ToString().Length>0)

{

lbTitle.Text = dt.Rows[0][

"Title"].ToString();

lbStartDate.Text = ((

DateTime)dt.Rows[0]["StartDate"]).ToShortDateString();

lbEndDate.Text = ((

DateTime)dt.Rows[0]["EndDate"]).ToShortDateString();

lbFilename.Text = dt.Rows[0][

"FileName"].ToString();

rcStartDate.SelectedDate = (

DateTime)dt.Rows[0]["StartDate"];

iframe.Attributes[

"src"] = "StreamIframeFile.aspx?file=" + dt.Rows[0]["FILENAME"].ToString() + "&FilePath=" + contentRoot + dt.Rows[0]["Id"].ToString();

//injectScript.Text = "<script type='text/javascript'>\n window.frames['" + iframe.ClientID + "'].src=\"StreamIframeFile.aspx?file=" + dt.Rows[0]["FILENAME"].ToString() + "&FilePath=" + contentRoot + dt.Rows[0]["Id"].ToString() + "\"\n</" + "script>";

}