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[Solved] radWindow memory leaking?

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Window

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

Remko asked on 02 Mar 2008, 12:23 PM

Is there something wrong with my method of initiating a server side radAlert?
Each time i press button1, the memory for iexplore.exe jumps up a few K, and every time thereafter. So it only takes a dozen or so clicks to go from 30K->70K. If I replace the RadAlert with a normal javascript alert in the code there is no problem.

ajax aspx page

<asp:Label ID="Label1" runat="server" Text="Click 'New' button as many times as you want to add new items and then click 'Save' to udpated the CheckBoxList"></asp:Label>

<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button_Click"/>

<asp:Button ID="Button2" runat="server" Text="Button" OnClick="Button_Click"/>

<asp:CheckBoxList ID="CheckBoxList1" runat="server" style="z-index: 101; left: 251px; position: absolute; top: 91px" Height="51px" Width="26px">

<asp:ListItem>1</asp:ListItem>

<asp:ListItem>2</asp:ListItem>

</asp:CheckBoxList>

<asp:ListBox ID="ListBox1" runat="server" style="z-index: 102; left: 204px; position: absolute; top: 87px" Height="191px" Width="34px">

<asp:ListItem>1</asp:ListItem>

<asp:ListItem>2</asp:ListItem>

</asp:ListBox>

<telerik:RadAjaxManager ID="TelerikjaxManager1" runat="server" OnResolveUpdatedControls="AjaxManager1_ResolveUpdatedControls" OnAjaxSettingCreated="TelerikjaxManager1_AjaxSettingCreated" OnAjaxSettingCreating="TelerikjaxManager1_AjaxSettingCreating">

<telerik:AjaxSetting AjaxControlID="Button1">

<telerik:AjaxUpdatedControl ControlID="Button1" />

<telerik:AjaxUpdatedControl ControlID="ListBox1" />

<telerik:AjaxUpdatedControl ControlID="TextBox1" />

</UpdatedControls>

</telerik:AjaxSetting>

<telerik:AjaxSetting AjaxControlID="Button2">

<telerik:AjaxUpdatedControl ControlID="Button2" />

<telerik:AjaxUpdatedControl ControlID="CheckBoxList1" />

<telerik:AjaxUpdatedControl ControlID="TextBox2" />

</UpdatedControls>

</telerik:AjaxSetting>

</AjaxSettings>

</telerik:RadAjaxManager>

<telerik:RadWindowManager ID="RadWindowManager1" runat="server" Skin="WebBlue" Animation="None" Behavior="Default" Behaviors="Default" InitialBehavior="None" InitialBehaviors="None" Left="" Top="">

</Windows>

</telerik:RadWindowManager>

<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>

<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>

Code behind is:

protected void Button_Click(object sender, EventArgs e)

{

TextBox1.Text =

"";

TextBox2.Text =

"";

switch (((Button) sender).ID)

{

case "Button1":

{

ScriptManager.RegisterClientScriptBlock(Page, typeof(Page), "RadAlertScript", "radalert('test');", true);

ListBox1.Items.Add(

new ListItem((ListBox1.Items.Count + 1).ToString()));

updateControlID =

"ListBox1";

TextBox1.Text =

"Button1";

TextBox2.Text =

"Button2";

break;

};

case "Button2":

{

for (int i = CheckBoxList1.Items.Count; i < ListBox1.Items.Count; i++)

{

CheckBoxList1.Items.Add(

new ListItem((i + 1).ToString()));

}

updateControlID =

"CheckBoxList1";

TextBox1.Text =

"Button1";

TextBox2.Text =

"Button2";

break;

}

11 Answers, 1 is accepted

answered on 23 Jun 2008, 01:13 AM

I'm also noticing a memory leak with the rad window when viewing in Sieve and Drip.

Here is my calling code:

Button calling java script:
<asp:ImageButton ID="ButtonPostMessage" runat="server" OnClientClick="popDiscussion(); return false;" ImageUrl="~/images/btn_postmessage_off.gif" />

Rad window declaration:
<telerik:RadWindow ID="RadWindowDiscussion" runat="server" Width="300px" Height="230px" Animation="None" Behaviors="Close" InitialBehaviors="None" IntialBehavior="None" Modal="true" VisibleStatusbar="false" ReloadOnShow="true"OnClientClose="popDiscussion_Close"                ClientCallBackFunction="popDiscussion_CallBackFunction">
</telerik:RadWindow>

Javascript supporting functions:
function popDiscussion()
{
    /* Stop asp timer */
    stopTimer();

    var url = 'DiscussionEntry.aspx'
    var oWnd = $find("RadWindowDiscussion");
    oWnd.setUrl(url)
    oWnd.show()
    oWnd.center();
}

function popDiscussion_Close()
{
    /* Start asp timer */
    startTimer();
}

function popDiscussion_CallBackFunction(radWindow, returnValue)
{
    if (returnValue == "Saving")
        __doPostBack('UpdatePanel1', 'RowAdded');
}

And here is the asp for the web page that is being called:

<%@ Page Language="C#" AutoEventWireup="true" Codebehind="DiscussionEntry.aspx.cs"
    Inherits="Feeds247.Web.Application.DiscussionEntry" %>

<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>
<style type="text/css">html {overflow-y:scroll;}</style>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <link href="./css/common.css" rel="stylesheet" type="text/css" />
</head>
<body>
    <form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true"
            LoadScriptsBeforeUI="false" ScriptMode="Release" />

        <script language="javascript" type="text/javascript">

function getRadWindow()
{
    var oWindow = null;
    if (window.radWindow) oWindow = window.RadWindow; //Will work in Moz in all cases, including clasic dialog
    else if (window.frameElement.radWindow) oWindow = window.frameElement.radWindow;//IE (and Moz az well)
    return oWindow;
}

function cancel_Clicked()
{
    var oWindow = getRadWindow();
    oWindow.Close();
}

function save_Clicked()
{
    var oWindow = getRadWindow();

    //Get current content of text area
    var oNewText = "Saving";

    //Variant1: Passing the argument to the Close method will result in the same behavior
    oWindow.Close(oNewText);
}

function swapButtons(name, direction, type)
{
    switch(direction)
    {
        case 'in':
        {
            switch(type)
            {
                case 'save':
                name.src="./images/btn_save_on.gif";
                break;
                case 'cancel':
                name.src="./images/btn_cancel_on.gif";
                break;
            }

            break;
        }

        case 'out':
        {
            switch(type)
            {
                case 'save':
                name.src="./images/btn_save_off.gif";
                break;
                case 'cancel':
                name.src="./images/btn_cancel_off.gif";
                break;
            }

            break;
        }
    }
}
        </script>

        <div id="allDiscussionEntry">
            <div id="contentDiscussionEntry">
                <asp:Label ID="lblEnterMsg" runat="server" Text="Enter Message" Font-Size="X-Small"
                    ForeColor="White"></asp:Label>
                <br />
                <telerik:RadTextBox ID="TextBoxDiscussionEntry" runat="server" TextMode="MultiLine"
                    ToolTip="Enter your discussion message here." CssClass="discussionEntry" Wrap="true"
                    Width="285px" Height="140px" BackColor="#E2EBf3" Font-Size="10px">
                </telerik:RadTextBox>
            </div>
            <div id="footerDiscussionEntry">
                <asp:ImageButton ID="ButtonSaveMessage" runat="server" OnClick="ButtonSaveMessage_Click"
                    ImageUrl="~/images/btn_save_off.gif" />
                <asp:ImageButton ID="ButtonCancelMessage" runat="server" ImageUrl="~/images/btn_cancel_off.gif"
                    OnClientClick="cancel_Clicked(); return false;" />
            </div>
        </div>
    </form>
</body>
</html>

answered on 23 Jun 2008, 02:54 PM

Hello Michael,

Are you testing with IE6 or IE7? I am asking you this because we've managed to fix all memory leaks in RadWindow for ASP.NET AJAX, but there is still one in IE6 which comes from the way IE6 handles IFRAMEs (RadWindow is basically an IFRAME).

I suggest to update to the latest version of RadWindow for ASP.NET AJAX and if you are using IE7 and still experience memory leaks - to send us a full, working project where they can be observed. We will check it and get back to you right away.

Kind regards,
Georgi Tunev
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center

answered on 25 Jun 2008, 12:47 AM

Hi

I suspect the following problem is related to this memory leak issue.

I initialise and open a RadWindow from codebehind in a Menu's ItemClick event handler. The RadWindow is managed by a RadWindowManager in the aspx file. Also there is a RadAjaxManager in which the RadMenu initiates the RadWindowManager (UpdatedControls). It also connects to a RadAjaxLoadingPanel to display the loading progress.

Problem:

When I click the X to close the RadWindow and then click on the same MenuItem again to redisplay the same RadWindow, the LoadingImage keeps on displaying indicating that the Ajax request is still processing. There is no way for me to stop it.

So I close the browser (IE7), open a new browser, access the same page and click the same MenuItem again, this time, the LoadingImage comes on and stays on persistently. If I repeat this testing process, all new browsers subsequently have the LoadingImage stay on displaying.

The only way I can get rid of it is to clear IE's Temporary Internet Files (through Delete Browsing History) so the new browser can start fresh.

I open the window in the following manner:
switch (ItemClicked.Value)
case "TestWindow":
RadWindow w = new RadWindow();
w.NavigateUrl = "~/TestWindow.aspx";
w.VisibleOnPageLoad = true;
w.DestroyOnClose = true;
windowManager.Windows.Add(w);
....

Did I do anything wrong or it's the memory leak that keep the window instant on the browser's cache?

Please help.

Thanks.