I recently converted from the AjaxControlToolKit web tab to the Infragistics Web Tab, version 11.1.20111.2020 and  I cannot figure out why my child controls are being lost on postback. These controls are not dynamic - they have been added to the designer. I removed all AJAX related code as a test (UpdatePanel, UpdateProgress) and I am still having the problem. The web tab's EnableViewState property is set to true.

Here is a single tab with an ultrachart. I have a button that will do a full postback (outside of this web tab) which updates the dataset with some filtered criteria. When I try to reference UltraChart1 in the Click event of the button I keep getting "Object Not set to Instance of an object", and sure enough the value of UltraChart1 is nothing. If I put UltraChart1 outside of the webtab, it works fine. Can you please tell me what I'm doing wrong, or what I need to add to the WebTab?

 

 

<ig:WebTab ID="tabReport" runat="server" Width="100%" Font-Size="Small" EnableViewState="true" EnableAjaxViewState="true">

 

 

<tabs>

 

 

<ig:ContentTabItem runat="server" Text="Graph">

 

 

<Template>

 

 

<igchart:UltraChart ID="UltraChart1" runat="server" ChartType="PieChart3D"

 

 

Version="11.1" Width="700px" Height="500px" BackgroundImageFileName="" Transform3D-Scale="100"

 

 

Transform3D-XRotation="54">

 

 

<Legend Visible="True" Location="Bottom"></Legend>

 

 

<Effects>

 

 

<Effects>

 

 

<igchartprop:GradientEffect />

 

 

</Effects>

 

 

</Effects>

 

 

<TitleTop Font="Microsoft Sans Serif, 14.25pt" HorizontalAlign="Center"

 

 

Text="Location Totals">

 

 

</TitleTop>

 

 

<ColorModel AlphaLevel="255" ColorBegin="Pink" ColorEnd="DarkRed"

 

 

ModelStyle="CustomLinear">

 

 

</ColorModel>

 

 

<PieChart3D PieThickness="15">

 

 

</PieChart3D>

 

 

<Axis>

 

 

<PE ElementType="None" Fill="Cornsilk" />

 

 

<X LineThickness="1" TickmarkInterval="0" TickmarkStyle="Smart" Visible="False">

 

 

<MajorGridLines AlphaLevel="255" Color="Gainsboro" DrawStyle="Dot"

 

 

Thickness="1" Visible="True" />

 

 

<MinorGridLines AlphaLevel="255" Color="LightGray" DrawStyle="Dot"

 

 

Thickness="1" Visible="False" />

 

 

<Labels Font="Verdana, 7pt" FontColor="DimGray" HorizontalAlign="Near"

 

 

ItemFormatString="&lt;ITEM_LABEL&gt;" Orientation="Horizontal"

 

 

VerticalAlign="Center" Visible="False">

 

 

<SeriesLabels Font="Verdana, 7pt" FontColor="DimGray" FormatString=""

 

 

HorizontalAlign="Near" Orientation="Horizontal" VerticalAlign="Center">

 

 

<Layout Behavior="Auto">

 

 

</Layout>

 

 

</SeriesLabels>

 

 

<Layout Behavior="Auto">

 

 

</Layout>

 

 

</Labels>

 

 

</X>

 

 

<Y LineThickness="1" TickmarkInterval="10" TickmarkStyle="Smart"

 

 

Visible="False">

 

 

<MajorGridLines AlphaLevel="255" Color="Gainsboro" DrawStyle="Dot"

 

 

Thickness="1" Visible="True" />

 

 

<MinorGridLines AlphaLevel="255" Color="LightGray" DrawStyle="Dot"

 

 

Thickness="1" Visible="False" />

 

 

<Labels Font="Verdana, 7pt" FontColor="DimGray" HorizontalAlign="Far"

 

 

ItemFormatString="&lt;DATA_VALUE:00.##&gt;" Orientation="Horizontal"

 

 

VerticalAlign="Center" Visible="False">

 

 

<SeriesLabels Font="Verdana, 7pt" FontColor="DimGray" FormatString=""

 

 

HorizontalAlign="Far" Orientation="Horizontal" VerticalAlign="Center">

 

 

<Layout Behavior="Auto">

 

 

</Layout>

 

 

</SeriesLabels>

 

 

<Layout Behavior="Auto">

 

 

</Layout>

 

 

</Labels>

 

 

</Y>

 

 

<Y2 LineThickness="1" TickmarkInterval="10" TickmarkStyle="Smart"

 

 

Visible="False">

 

 

<MajorGridLines AlphaLevel="255" Color="Gainsboro" DrawStyle="Dot"

 

 

Thickness="1" Visible="True" />

 

 

<MinorGridLines AlphaLevel="255" Color="LightGray" DrawStyle="Dot"

 

 

Thickness="1" Visible="False" />

 

 

<Labels Font="Verdana, 7pt" FontColor="Gray" HorizontalAlign="Near"

 

 

ItemFormatString="&lt;DATA_VALUE:00.##&gt;" Orientation="Horizontal"

 

 

VerticalAlign="Center" Visible="False">

 

 

<SeriesLabels Font="Verdana, 7pt" FontColor="Gray" FormatString=""

 

 

HorizontalAlign="Near" Orientation="Horizontal" VerticalAlign="Center">

 

 

<Layout Behavior="Auto">

 

 

</Layout>

 

 

</SeriesLabels>

 

 

<Layout Behavior="Auto">

 

 

</Layout>

 

 

</Labels>

 

 

</Y2>

 

 

<X2 LineThickness="1" TickmarkInterval="0" TickmarkStyle="Smart"

 

 

Visible="False">

 

 

<MajorGridLines AlphaLevel="255" Color="Gainsboro" DrawStyle="Dot"

 

 

Thickness="1" Visible="True" />

 

 

<MinorGridLines AlphaLevel="255" Color="LightGray" DrawStyle="Dot"

 

 

Thickness="1" Visible="False" />

 

 

<Labels Font="Verdana, 7pt" FontColor="Gray" HorizontalAlign="Far"

 

 

ItemFormatString="&lt;ITEM_LABEL&gt;" Orientation="Horizontal"

 

 

VerticalAlign="Center" Visible="False">

 

 

<SeriesLabels Font="Verdana, 7pt" FontColor="Gray" FormatString=""

 

 

HorizontalAlign="Far" Orientation="Horizontal" VerticalAlign="Center">

 

 

<Layout Behavior="Auto">

 

 

</Layout>

 

 

</SeriesLabels>

 

 

<Layout Behavior="Auto">

 

 

</Layout>

 

 

</Labels>

 

 

</X2>

 

 

<Z LineThickness="1" TickmarkInterval="0" TickmarkStyle="Smart" Visible="False">

 

 

<MajorGridLines AlphaLevel="255" Color="Gainsboro" DrawStyle="Dot"

 

 

Thickness="1" Visible="True" />

 

 

<MinorGridLines AlphaLevel="255" Color="LightGray" DrawStyle="Dot"

 

 

Thickness="1" Visible="False" />

 

 

<Labels Font="Verdana, 7pt" FontColor="DimGray" HorizontalAlign="Far"

 

 

ItemFormatString="" Orientation="Horizontal" VerticalAlign="Center"

 

 

Visible="False">

 

 

<SeriesLabels Font="Verdana, 7pt" FontColor="DimGray" HorizontalAlign="Far"

 

 

Orientation="Horizontal" VerticalAlign="Center">

 

 

<Layout Behavior="Auto">

 

 

</Layout>

 

 

</SeriesLabels>

 

 

<Layout Behavior="Auto">

 

 

</Layout>

 

 

</Labels>

 

 

</Z>

 

 

<Z2 LineThickness="1" TickmarkInterval="0" TickmarkStyle="Smart"

 

 

Visible="False">

 

 

<MajorGridLines AlphaLevel="255" Color="Gainsboro" DrawStyle="Dot"

 

 

Thickness="1" Visible="True" />

 

 

<MinorGridLines AlphaLevel="255" Color="LightGray" DrawStyle="Dot"

 

 

Thickness="1" Visible="False" />

 

 

<Labels Font="Verdana, 7pt" FontColor="Gray" HorizontalAlign="Near"

 

 

ItemFormatString="" Orientation="Horizontal" VerticalAlign="Center"

 

 

Visible="False">

 

 

<SeriesLabels Font="Verdana, 7pt" FontColor="Gray" HorizontalAlign="Near"

 

 

Orientation="Horizontal" VerticalAlign="Center">

 

 

<Layout Behavior="Auto">

 

 

</Layout>

 

 

</SeriesLabels>

 

 

<Layout Behavior="Auto">

 

 

</Layout>

 

 

</Labels>

 

 

</Z2>

 

 

</Axis>

 

 

<Tooltips FormatString="&lt;ITEM_LABEL&gt;: &lt;DATA_VALUE:00.##&gt;" />

 

 

</igchart:UltraChart>

 

 

</Template>

 

 

</ig:ContentTabItem>

 

 

</tabs>

 

 

 

</ig:WebTab>