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RenderMode="Lightweight" Causes content area height to change after postback

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

Sam asked on 27 Jun 2013, 01:08 PM

RadWindowOnLoad.JPG

RadWindowAfterPostback.JPG

Hi,

I'd really like to use RenderMode="Lightweight", but am finding this issue:

When a radwindow first loads, the content takes up most of the window.
If the content page in the radwindow does a postback, the window height jumps to the minimum height.

You can see this from my screen shots.

Here's some test aspx

<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="RadWindowTest.aspx.vb" Inherits="WebApp.RadWindowTest" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

<title></title>

</head>

<body>

<form id="form1" runat="server">

<telerik:RadStyleSheetManager ID="RadStyleSheetManager1" runat="server">

</telerik:RadStyleSheetManager>

<telerik:RadScriptManager ID="RadScriptManager1" runat="server">

<Scripts>

<asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.Core.js">

</asp:ScriptReference>

<asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQuery.js">

</asp:ScriptReference>

<asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQueryInclude.js">

</asp:ScriptReference>

</Scripts>

</telerik:RadScriptManager>

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">

</telerik:RadAjaxManager>

<div>

<telerik:RadWindowManager ID="RadWindowManagerParent" runat="server" Animation="None" RenderMode="Lightweight"

OffsetElementID="WindowAnchor" RestrictionZoneID="DivContent" EnableTheming="true" Opacity="100"

AnimationDuration="0" DestroyOnClose="true" EnableShadow="true"

PreserveClientState="true" ShowContentDuringLoad="False" ShowOnTopWhenMaximized="False"

Width="1000" Height="600" VisibleStatusbar="false" ReloadOnShow="false" KeepInScreenBounds="False"

Style="z-index: 2501;" Behaviors="Close,Maximize,Minimize,Move,Reload,Resize"

EnableViewState="False">

<Windows>

<telerik:RadWindow ID="RadWindow1" runat="server" VisibleOnPageLoad="true"

NavigateUrl="RadWindowContent.aspx">

</telerik:RadWindow>

</Windows>

</telerik:RadWindowManager>

</div>

</form>

</body>

</html>

The content that loads in the window "RadWindowContent.aspx"

<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="RadWindowContent.aspx.vb" Inherits="WebApp.RadWindowContent" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

<title></title>

</head>

<body>

<form id="form1" runat="server">

<telerik:RadStyleSheetManager ID="RadStyleSheetManager1" runat="server">

</telerik:RadStyleSheetManager>

<telerik:RadScriptManager ID="RadScriptManager1" runat="server">

<Scripts>

<asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.Core.js"></asp:ScriptReference>

<asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQuery.js"></asp:ScriptReference>

<asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQueryInclude.js"></asp:ScriptReference>

</Scripts>

</telerik:RadScriptManager>

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">

</telerik:RadAjaxManager>

<div>

<table width="100%" border="0" cellspacing="2" cellpadding="0">

<tr>

<td width="250" align="left" valign="top">

<asp:Panel ID="PnlSearch" runat="server" DefaultButton="BtnSearch">

<div align="left">

<telerik:RadPanelBar ID="RadPanelbarSearch" runat="server" CollapseAnimation-Duration="100"

CollapseAnimation-Type="Linear" ExpandAnimation-Duration="100" ExpandAnimation-Type="Linear"

ExpandMode="SingleExpandedItem" Width="300px">

<Items>

<telerik:RadPanelItem runat="server" Expanded="true" Text="Search Criteria">

<Items>

<telerik:RadPanelItem runat="server">

<ItemTemplate>

<table border="0" cellpadding="0" cellspacing="2" width="280">

<tr id="TrSelect" runat="server">

<td width="115px"> <span>View:</span>

</td>

<td>

<asp:RadioButtonList ID="RblSelect" runat="server" RepeatDirection="Horizontal" RepeatLayout="Flow"

AutoPostBack="true">

<asp:ListItem Text="Single" Value="single"></asp:ListItem>

<asp:ListItem Text="Multi" Value="multi" Selected="True"></asp:ListItem>

</asp:RadioButtonList>

</td>

</tr>

<tr id="TrOffice" runat="server">

<td width="117">

<asp:HyperLink ID="hlOffice" runat="server" href="" TabIndex="-1">Office:</asp:HyperLink>

</td>

<td width="153">

<asp:TextBox ID="txtOffice" runat="server" Width="135px" MaxLength="4" TabIndex="1"></asp:TextBox>

</td>

</tr>

<tr id="TrClient" runat="server">

<td>

<asp:HyperLink ID="hlClient" runat="server" TabIndex="-1" NavigateUrl="~/Blank.htm"><span>Client:</span></asp:HyperLink>

</td>

<td>

<asp:TextBox ID="txtClient" runat="server" Width="135px" TabIndex="1" MaxLength="6"></asp:TextBox>

</td>

</tr>

<tr id="TrDivision" runat="server">

<td>

<asp:HyperLink ID="hlDivision" runat="server" TabIndex="-1" NavigateUrl="~/Blank.htm"><span>Division:</span></asp:HyperLink>

</td>

<td>

<asp:TextBox ID="txtDivision" runat="server" Width="135px" TabIndex="2" MaxLength="6"></asp:TextBox>

</td>

</tr>

<tr id="TrProduct" runat="server">

<td>

<asp:HyperLink ID="hlProduct" runat="server" TabIndex="-1" NavigateUrl="~/Blank.htm"><span>Product:</span></asp:HyperLink>

</td>

<td>

<asp:TextBox ID="txtProduct" runat="server" Width="135px" TabIndex="3" MaxLength="6"></asp:TextBox>

</td>

</tr>

<tr id="TrSalesClass" runat="server">

<td>

<asp:HyperLink ID="hlSalesClass" runat="server" href="" TabIndex="-1"><span>Sales Class:</span></asp:HyperLink>

</td>

<td>

<asp:TextBox ID="txtSalesClass" runat="server" Width="135px" TabIndex="4" MaxLength="6"></asp:TextBox>

</td>

</tr>

<tr id="Tr4" runat="server">

<td>

<asp:HyperLink ID="HlCampaign" runat="server" TabIndex="-1" NavigateUrl="~/Blank.htm"><span>Campaign:</span></asp:HyperLink>

</td>

<td>

<asp:TextBox ID="TxtCampaign" runat="server" MaxLength="6" TabIndex="5" Text="" Width="135px"></asp:TextBox>

<asp:HiddenField ID="hfCampaignID" runat="server" />

</td>

</tr>

<tr id="TrJobNum" runat="server">

<td>

<asp:HyperLink ID="hlJob" runat="server" TabIndex="-1" NavigateUrl="~/Blank.htm"><span>Job:</span></asp:HyperLink>

</td>

<td>

<asp:TextBox ID="txtJob" runat="server" Width="135px" TabIndex="6" MaxLength="6"></asp:TextBox>

</td>

</tr>

<tr id="TrJobComp" runat="server">

<td>

<asp:HyperLink ID="hlComponent" runat="server" TabIndex="-1" NavigateUrl="~/Blank.htm"><span>Component:</span></asp:HyperLink>

</td>

<td>

<asp:TextBox ID="txtComponent" runat="server" Width="135px" MaxLength="6" TabIndex="7"></asp:TextBox>

</td>

</tr>

<tr id="Tr2" runat="server">

<td>

<asp:HyperLink ID="HlAccountExecutive" runat="server" TabIndex="-1" NavigateUrl="~/Blank.htm"><span>AE:</span></asp:HyperLink>

</td>

<td>

<asp:TextBox ID="TxtAccountExecutive" runat="server" MaxLength="6" TabIndex="8" Text=""

Width="135px"></asp:TextBox>

</td>

</tr>

<tr id="Tr0" runat="server">

<td>

</td>

<td>

</td>

</tr>

<tr id="Tr1" runat="server">

<td>

<asp:HyperLink ID="HlManager" runat="server" TabIndex="-1" NavigateUrl="~/Blank.htm"></asp:HyperLink>

</td>

<td>

<asp:TextBox ID="TxtManager" runat="server" MaxLength="6" TabIndex="9" Text="" Width="135px"></asp:TextBox>

</td>

</tr>

<tr id="Tr3" runat="server">

<td colspan="2">

<asp:CheckBox ID="ChkExcludeCompletedSchedules" runat="server" Checked="True" TabIndex="10"

Text="" />Exclude Completed Schedules

</td>

</tr>

<tr id="Tr13" runat="server">

<td>

</td>

<td>

</td>

</tr>

<tr id="Tr5" runat="server">

<td> <span>Phase:</span>

</td>

<td>

<telerik:RadComboBox ID="DropPhaseFilter" runat="server" TabIndex="11" AppendDataBoundItems="true"

DropDownWidth="175" Width="137" Visible="true">

<Items>

<telerik:RadComboBoxItem Text="[No Filter]" Value="no_filter"></telerik:RadComboBoxItem>

</Items>

</telerik:RadComboBox>

</td>

</tr>

<tr id="Tr7" runat="server">

<td>

<asp:HyperLink ID="HlRole" runat="server" TabIndex="-1" NavigateUrl="~/Blank.htm"><span>Role:</span></asp:HyperLink>

</td>

<td>

<asp:TextBox ID="TxtRole" runat="server" MaxLength="6" TabIndex="12" Text="" Width="135px"></asp:TextBox>

</td>

</tr>

<tr id="Tr9" runat="server">

<td>

<asp:HyperLink ID="HlTask" runat="server" TabIndex="-1" NavigateUrl="~/Blank.htm"><span>Task:</span></asp:HyperLink>

</td>

<td>

<asp:TextBox ID="TxtTaskCode" runat="server" MaxLength="10" TabIndex="13" Text=""

Width="135px"></asp:TextBox>

</td>

</tr>

<tr id="Tr11" runat="server">

<td>

<asp:HyperLink ID="HlEmployee" runat="server" TabIndex="-1" NavigateUrl="~/Blank.htm"><span>Employee:</span></asp:HyperLink>

</td>

<td>

<asp:TextBox ID="TxtEmployee" runat="server" MaxLength="6" TabIndex="14" Text=""

Width="135px"></asp:TextBox>

</td>

</tr>

<tr id="Tr12" runat="server">

<td> <span>Date Cutoff:</span>

</td>

<td>

<telerik:RadDatePicker ID="RadDatePickerDateCutoff" runat="server" MinDate="1950-01-01"

DatePopupButton-ToolTip="Show calendar" MaxDate="2050-01-01" Width="163px">

<DateInput DateFormat="d" EmptyMessage="Start Date" TabIndex="15">

<IncrementSettings InterceptArrowKeys="true" InterceptMouseWheel="true" />

</DateInput>

<Calendar ID="CalendarStartDate" RangeMinDate="1900-01-01" runat="server" RenderMode="Lightweight">

<SpecialDays>

<telerik:RadCalendarDay Repeatable="Today" ItemStyle-BackColor="LightSalmon">

</telerik:RadCalendarDay>

</SpecialDays>

</Calendar>

</telerik:RadDatePicker>

</td>

</tr>

<tr id="Tr6" runat="server">

<td colspan="2">

<asp:CheckBox ID="ChkOnlyPendingTasks" runat="server" TabIndex="16" Text="" />Only

Pending Tasks

</td>

</tr>

<tr id="Tr8" runat="server">

<td colspan="2">

<asp:CheckBox ID="ChkExcludeProjectedTasks" runat="server" TabIndex="17" Text="" />Exclude

Projected Tasks

</td>

</tr>

<tr id="Tr10" runat="server">

<td colspan="2">

<asp:CheckBox ID="ChkIncludeCompletedTasks" runat="server" Checked="True" TabIndex="18"

Text="" />Include Completed Tasks

</td>

</tr>

</table>

</ItemTemplate>

</telerik:RadPanelItem>

</Items>

</telerik:RadPanelItem>

</Items>

</telerik:RadPanelBar>

</div>

<div style="display: none;">

<asp:Button ID="BtnSearch" runat="server" Text="Search" Visible="true" TabIndex="-1" />

</div>

</asp:Panel>

</td>

<td align="left" valign="top">

<telerik:RadToolBar ID="RadToolbarSearch" runat="server" AutoPostBack="true" Width="100%"

TabIndex="-1">

<Items>

<telerik:RadToolBarButton IsSeparator="true" />

<telerik:RadToolBarButton ID="RadToolbarButtonSearch" ImageUrl="Images/Find.png"

Text="Search" Value="Search" ToolTip="Search" />

<telerik:RadToolBarButton IsSeparator="true" />

<telerik:RadToolBarButton ID="RadToolbarButtonNew" ImageUrl="Images/add2.png" ToolTip="New"

Text="New" Value="New" />

<telerik:RadToolBarButton IsSeparator="true" />

<telerik:RadToolBarButton ID="RadToolbarButtonClear" ImageUrl="Images/undo.png" Text="Clear"

Value="Clear" ToolTip="Clear" />

<telerik:RadToolBarButton ImageUrl="Images/bookmark16.png" Text="" Value="Bookmark"

ToolTip="Bookmark" Visible="false" />

<telerik:RadToolBarButton IsSeparator="true" />

</Items>

</telerik:RadToolBar>

<telerik:RadGrid ID="RadGridProjectScheduleSearch" runat="server" AllowSorting="True"

AutoGenerateColumns="False" GridLines="None" GroupingSettings-GroupByFieldsSeparator=" "

AllowPaging="true" PageSize="15" EnableEmbeddedSkins="True">

<PagerStyle Mode="NextPrevNumericAndAdvanced" AlwaysVisible="true" Position="Bottom"></PagerStyle>

<SortingSettings SortedAscToolTip="Sorted ascending" SortedDescToolTip="Sorted descending" />

<ClientSettings AllowColumnsReorder="False">

</ClientSettings>

<GroupingSettings GroupByFieldsSeparator=" " />

<MasterTableView HorizontalAlign="Left" DataKeyNames="JOB_NUMBER,JOB_COMPONENT_NBR">

<Columns>

<telerik:GridTemplateColumn>

<HeaderStyle HorizontalAlign="Center" VerticalAlign="Middle" Width="18px" />

<ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" Width="18px" />

<ItemTemplate>

<asp:ImageButton ID="butDetail" runat="server" CommandName="Detail" ImageAlign="AbsMiddle"

TabIndex="21" ImageUrl="~/Images/view-trans.png" />

</ItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn Visible="false">

<HeaderStyle HorizontalAlign="Center" VerticalAlign="Middle" Width="18px" />

<ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" Width="18px" />

<ItemTemplate>

<asp:ImageButton ID="ImgBtnPrint" runat="server" CommandName="Print" ImageAlign="AbsMiddle"

ToolTip="Print/Send Schedule" ImageUrl="~/Images/printer2-trans.png" />

</ItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn HeaderText="Job Number" SortExpression="JOB_NUMBER">

<HeaderStyle HorizontalAlign="left" VerticalAlign="Middle" Width="70px" />

<ItemStyle HorizontalAlign="left" VerticalAlign="Middle" Width="70px" />

<ItemTemplate>

<asp:Label ID="lblJobNum" runat="server" Text='<%#Eval("JOB_NUMBER")%>'></asp:Label>

</ItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn HeaderText="Job Description" SortExpression="JOB_DESC">

<HeaderStyle HorizontalAlign="left" VerticalAlign="Middle" />

<ItemStyle HorizontalAlign="left" VerticalAlign="Middle" />

<ItemTemplate>

<asp:Label ID="lblJobDesc" runat="server" Text='<%#Eval("JOB_DESC")%>'></asp:Label>

</ItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn HeaderText="Component Number" SortExpression="JOB_COMPONENT_NBR">

<HeaderStyle HorizontalAlign="left" VerticalAlign="Middle" Width="70px" />

<ItemStyle HorizontalAlign="left" VerticalAlign="Middle" Width="70px" />

<ItemTemplate>

<asp:Label ID="lblJobComp" runat="server" Text='<%#Eval("JOB_COMPONENT_NBR")%>'></asp:Label>

</ItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn HeaderText="Component Description" SortExpression="JOB_COMP_DESC">

<HeaderStyle HorizontalAlign="left" VerticalAlign="Middle" />

<ItemStyle HorizontalAlign="left" VerticalAlign="Middle" />

<ItemTemplate>

<asp:Label ID="lblJobCompDesc" runat="server" Text='<%#Eval("JOB_COMP_DESC")%>'></asp:Label>

</ItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn HeaderText="Client" SortExpression="CL_CODE">

<HeaderStyle HorizontalAlign="left" VerticalAlign="Middle" Width="55" />

<ItemStyle HorizontalAlign="left" VerticalAlign="Middle" Width="55" />

<ItemTemplate>

<asp:Label ID="lblClientCode" runat="server" Text='<%#Eval("CL_CODE")%>'></asp:Label>

</ItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn HeaderText="Division" SortExpression="DIV_CODE">

<HeaderStyle HorizontalAlign="left" VerticalAlign="Middle" Width="55" />

<ItemStyle HorizontalAlign="left" VerticalAlign="Middle" Width="55" />

<ItemTemplate>

<asp:Label ID="lblDivisionCode" runat="server" Text='<%#Eval("DIV_CODE")%>'></asp:Label>

</ItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn HeaderText="Product" SortExpression="PRD_CODE">

<HeaderStyle HorizontalAlign="left" VerticalAlign="Middle" Width="55" />

<ItemStyle HorizontalAlign="left" VerticalAlign="Middle" Width="55" />

<ItemTemplate>

<asp:Label ID="lblProductCode" runat="server" Text='<%#Eval("PRD_CODE")%>'></asp:Label>

</ItemTemplate>

</telerik:GridTemplateColumn>

</Columns>

<FilterItemStyle VerticalAlign="Top" Wrap="False" />

<ExpandCollapseColumn Visible="False">

<HeaderStyle Width="19px" />

</ExpandCollapseColumn>

<RowIndicatorColumn Visible="False">

<HeaderStyle Width="20px" />

</RowIndicatorColumn>

</MasterTableView>

</telerik:RadGrid>

</td>

</tr>

</table>

</div>

</form>

</body>

</html>

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RenderMode="Lightweight" Causes content area height to change after postback

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