I have the following radgrid markup. Toward the bottom I have an asp Panel that I cannot find using C# FindControl(). If anyone has any tips on how to do this, please let me know.
<telerik:RadGrid runat="server" ID="UnapprovedPOsGrid" AutoGenerateColumns="False"
Skin="Metro" DataSourceID="UnapprovedPOsDataSource" AllowAutomaticInserts="true"
OnItemCommand="UnapprovedPOsGrid_ItemCommand" OnItemDataBound="UnapprovedPOsGrid_ItemDataBound" OnEditCommand="UnapprovedPOsGrid_EditCommand"
AllowAutomaticDeletes="true" AllowAutomaticUpdates="true">
<MasterTableView EditMode="EditForms" CommandItemDisplay="Top" DataKeyNames="PO_ID"
ExpandCollapseColumn-ButtonType="LinkButton" ShowHeadersWhenNoRecords="true"
GroupsDefaultExpanded="false" GroupLoadMode="server" ShowGroupFooter="true" DataSourceID="UnapprovedPOsDataSource">
<Columns>
<telerik:GridEditCommandColumn ButtonType="LinkButton" EditText="View" UniqueName="ViewCommandColumn"></telerik:GridEditCommandColumn>
<telerik:GridBoundColumn HeaderText="Purchase Order Number" DataField="PO_ID" />
<telerik:GridBoundColumn HeaderText="Description of Item" DataField="POI_DescriptionOfItem" />
<telerik:GridBoundColumn HeaderText="Employee" DataField="PO_EmployeeName" />
<telerik:GridBoundColumn HeaderText="Vendor" DataField="PO_VendorName">
</telerik:GridBoundColumn>
</Columns>
<EditFormSettings ColumnNumber="3" EditFormType="Template">
<FormTemplate>
<table>
<tr>
<td>
<div>
<strong>Employee Name</strong>
</div>
<div>
<asp:Label runat="server" ID="EmployeeLabel" Text='<%# Bind("PO_EmployeeName") %>'>
</asp:Label>
</div>
</td>
<td>
<div>
<strong>Vendor Name</strong>
</div>
<div>
<asp:Label runat="server" ID="VendorNameLabel" Text='<%# Bind("PO_VendorName") %>'>
</asp:Label>
</div>
</td>
</tr>
<tr>
<td>
<div>
<strong>Vendor Phone</strong>
</div>
<div>
<asp:Label runat="server" ID="VendorPhoneLabel" Text='<%# Bind("PO_VendorPhone") %>'>
</asp:Label>
</div>
</td>
<td>
<div>
<strong>Division Director</strong>
</div>
<div>
<telerik:RadTextBox runat="server" ID="DivisionDirectorApprovalLabel" Text='<%# Bind("PO_DivisionDirectorApproval") %>'>
</telerik:RadTextBox>
</div>
</td>
</tr>
<tr>
<td>
<div>
<strong>Approved By Division Director</strong><br />
<br />
</div>
</td>
<td>
<div>
<asp:CheckBox runat="server" ID="DivisionDirectorApprovalCheckBox" Checked='<%# Bind("PO_DivisionDirectorApproved") %>'
TextAlign="Left" Enabled="true" /><br />
<br />
</div>
</td>
</tr>
<tr>
<td>
<div>
<strong>Estimated Delivery Date</strong>
</div>
<div>
<asp:Label runat="server" ID="EstimatedDeliveryDateLabel" Text='<%# Bind("PO_EstimatedDeliveryDate") %>'></asp:Label>
</div>
</td>
<td>
<div>
<strong>Company Name Ordered In</strong>
</div>
<div>
<asp:Label runat="server" ID="CompanyNameOrderedInLabel" Text='<%# Bind("PO_CompanyNameOrderedIn") %>'
Enabled="false">
</asp:Label>
</div>
</td>
</tr>
<tr>
<td>
<div>
<strong>Division</strong>
</div>
<div>
<asp:Label runat="server" ID="DivisionLabel" Enabled="false" Text='<%# Bind("PO_Division") %>'>
</asp:Label>
</div>
</td>
<td>
<div>
<strong>Payment Method</strong>
</div>
<div>
<asp:Label runat="server" ID="PaymentMethodLabel" EmptyMessage="Select..."
Text='<%# Bind("PO_PaymentMethod") %>'>
</asp:Label>
</div>
</td>
</tr>
<tr>
<td>
<div>
<strong>To Be Ordered By</strong>
</div>
<div>
<asp:Label runat="server" ID="ToBeOrderedByLabel" Text='<%# Bind("PO_ToBeOrderedBy") %>'>
</asp:Label>
</div>
</td>
</tr>
</table>
<telerik:RadGrid runat="server" ID="UnapprovedPOsItemsGrid" DataSourceID="UnapprovedPOsItemsDataSource"
OnItemDataBound="UnapprovedPOsItemsGrid_ItemDataBound" AutoGenerateColumns="false">
<MasterTableView CommandItemDisplay="Top" DataKeyNames="PO_ID" ShowHeadersWhenNoRecords="true"
GroupsDefaultExpanded="false" GroupLoadMode="server" ShowGroupFooter="true" DataSourceID="UnapprovedPOsItemsDataSource">
<CommandItemTemplate>
<asp:Label ID="ItemsBeingPurchasedLabel" runat="server" Width="170px" Text="Items Being Purchased"
Style="font-weight: bold; padding: 5px 0 5px 5px"></asp:Label>
</CommandItemTemplate>
<Columns>
<telerik:GridBoundColumn DataField="PO_ID" Visible="false">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn HeaderText="Description of Item" DataField="POI_DescriptionOfItem" />
<telerik:GridBoundColumn HeaderText="Reason For Purchase" DataField="POI_ReasonForPurchase" />
<telerik:GridBoundColumn HeaderText="Quantity" DataField="POI_Quantity" FooterAggregateFormatString="<b>Total Quantity: </b>{0}" />
<telerik:GridBoundColumn HeaderText="Unit Price" DataField="POI_UnitPrice" FooterAggregateFormatString="<b>Total Price: </b>{0}" />
<telerik:GridBoundColumn HeaderText="Amount" DataField="POI_Amount" FooterAggregateFormatString="<b>Total Amount: </b>{0}" />
<telerik:GridBoundColumn HeaderText="Price Quoted" DataField="POI_PriceQuoted" FilterControlWidth="80px" />
<telerik:GridBoundColumn HeaderText="Price Estimated" DataField="POI_PriceEstimated" />
<telerik:GridBoundColumn HeaderText="Additional Costs" DataField="POI_AdditionalCosts"
FilterControlWidth="80px" />
<telerik:GridBoundColumn HeaderText="Explanation of Additional Costs" Display="false"
DataField="POI_AdditionalCostsExplanation" />
</Columns>
<NestedViewSettings DataSourceID="UnapprovedPOsItemsDataSource">
<ParentTableRelation>
<telerik:GridRelationFields DetailKeyField="POI_Item_ID" MasterKeyField="POI_Item_ID" />
</ParentTableRelation>
</NestedViewSettings>
<NestedViewTemplate>
<div style="padding-left: 30px; padding-top: 20px; padding-bottom: 20px;">
<table>
<tr>
<td>Description of Item
</td>
<td>
<asp:Label runat="server" ID="ItemDescriptionTextBox" Text='<%# Bind("POI_DescriptionOfItem") %>'></asp:Label>
</td>
</tr>
<tr>
<td>Reason For Purchase
</td>
<td>
<asp:Label runat="server" ID="ReasonForPurchaseTextBox" Text='<%# Bind("POI_ReasonForPurchase") %>'>
</asp:Label>
</td>
</tr>
<tr>
<td>Quantity
</td>
<td>
<asp:Label runat="server" ID="QuantityNumericTextBox" Text='<%# Bind("POI_Quantity") %>'>
</asp:Label>
</td>
</tr>
<tr>
<td>Unit Price
</td>
<td>
<asp:Label runat="server" ID="UnitPriceNumericTextBox" Text='<%# Bind("POI_UnitPrice") %>'>
</asp:Label>
</td>
</tr>
<tr>
<td>Amount (Q x Price)
</td>
<td>
<asp:Label runat="server" ID="AmountNumericTextBox" Text='<%# Bind("POI_Amount") %>'>
</asp:Label>
</td>
</tr>
<tr>
<td>Price Quoted
</td>
<td>
<asp:Label runat="server" ID="PriceQuotedNumericTextBox" Text='<%# Bind("POI_PriceQuoted") %>'>
</asp:Label>
</td>
</tr>
<tr>
<td>Price Estimated
</td>
<td>
<asp:Label runat="server" ID="PriceEstimatedNumericTextBox" Text='<%# Bind("POI_PriceEstimated") %>'>
</asp:Label>
</td>
</tr>
<tr>
<td>Additional Costs
</td>
<td>
<asp:Label runat="server" ID="AdditionalCostsNumericTextBox" Text='<%# Bind("POI_AdditionalCosts") %>'>
</asp:Label>
</td>
</tr>
<tr>
<td>Explanation of Additional Costs
</td>
<td>
<asp:Label runat="server" ID="ExplanationAdditionalCostsTextBox" Text='<%# Bind("POI_AdditionalCostsExplanation") %>'>
</asp:Label>
</td>
</tr>
</table>
<br />
</div>
</NestedViewTemplate>
</MasterTableView>
</telerik:RadGrid>
<table>
<tr>
<td>
<div>
<strong>Plus Sales Tax</strong>
</div>
<div>
<asp:Label runat="server" ID="PlusSalesTaxLabel" Text='<%# Bind("PO_PlusSalesTax") %>'>
</asp:Label>
</div>
</td>
</tr>
<tr>
<td>
<div>
<strong>Total Cost</strong>
</div>
<div>
<asp:Label runat="server" ID="TotalCostLabel" Text='<%# Bind("PO_TotalCost") %>'>
</asp:Label>
</div>
</td>
</tr>
<tr>
<td>
<div>
<strong>Supporting Documents</strong>
</div>
<asp:Panel runat="server" ID="supportingDocsPanel">
</asp:Panel>
</td>
</tr>
</table>
<asp:Button ID="btnUpdate" Text='<%# (Container is GridEditFormInsertItem) ? "Save" : "Update" %>'
runat="server" CommandName='<%# (Container is GridEditFormInsertItem) ? "PerformInsert" : "Update" %>' UseSubmitBehavior="true" />
<asp:Button ID="btnCancel" Text="Cancel" runat="server" CausesValidation="False"
UseSubmitBehavior="false" CommandName="Cancel" />
</FormTemplate>
</EditFormSettings>
</MasterTableView>
</telerik:RadGrid>
Skin="Metro" DataSourceID="UnapprovedPOsDataSource" AllowAutomaticInserts="true"
OnItemCommand="UnapprovedPOsGrid_ItemCommand" OnItemDataBound="UnapprovedPOsGrid_ItemDataBound" OnEditCommand="UnapprovedPOsGrid_EditCommand"
AllowAutomaticDeletes="true" AllowAutomaticUpdates="true">
<MasterTableView EditMode="EditForms" CommandItemDisplay="Top" DataKeyNames="PO_ID"
ExpandCollapseColumn-ButtonType="LinkButton" ShowHeadersWhenNoRecords="true"
GroupsDefaultExpanded="false" GroupLoadMode="server" ShowGroupFooter="true" DataSourceID="UnapprovedPOsDataSource">
<Columns>
<telerik:GridEditCommandColumn ButtonType="LinkButton" EditText="View" UniqueName="ViewCommandColumn"></telerik:GridEditCommandColumn>
<telerik:GridBoundColumn HeaderText="Purchase Order Number" DataField="PO_ID" />
<telerik:GridBoundColumn HeaderText="Description of Item" DataField="POI_DescriptionOfItem" />
<telerik:GridBoundColumn HeaderText="Employee" DataField="PO_EmployeeName" />
<telerik:GridBoundColumn HeaderText="Vendor" DataField="PO_VendorName">
</telerik:GridBoundColumn>
</Columns>
<EditFormSettings ColumnNumber="3" EditFormType="Template">
<FormTemplate>
<table>
<tr>
<td>
<div>
<strong>Employee Name</strong>
</div>
<div>
<asp:Label runat="server" ID="EmployeeLabel" Text='<%# Bind("PO_EmployeeName") %>'>
</asp:Label>
</div>
</td>
<td>
<div>
<strong>Vendor Name</strong>
</div>
<div>
<asp:Label runat="server" ID="VendorNameLabel" Text='<%# Bind("PO_VendorName") %>'>
</asp:Label>
</div>
</td>
</tr>
<tr>
<td>
<div>
<strong>Vendor Phone</strong>
</div>
<div>
<asp:Label runat="server" ID="VendorPhoneLabel" Text='<%# Bind("PO_VendorPhone") %>'>
</asp:Label>
</div>
</td>
<td>
<div>
<strong>Division Director</strong>
</div>
<div>
<telerik:RadTextBox runat="server" ID="DivisionDirectorApprovalLabel" Text='<%# Bind("PO_DivisionDirectorApproval") %>'>
</telerik:RadTextBox>
</div>
</td>
</tr>
<tr>
<td>
<div>
<strong>Approved By Division Director</strong><br />
<br />
</div>
</td>
<td>
<div>
<asp:CheckBox runat="server" ID="DivisionDirectorApprovalCheckBox" Checked='<%# Bind("PO_DivisionDirectorApproved") %>'
TextAlign="Left" Enabled="true" /><br />
<br />
</div>
</td>
</tr>
<tr>
<td>
<div>
<strong>Estimated Delivery Date</strong>
</div>
<div>
<asp:Label runat="server" ID="EstimatedDeliveryDateLabel" Text='<%# Bind("PO_EstimatedDeliveryDate") %>'></asp:Label>
</div>
</td>
<td>
<div>
<strong>Company Name Ordered In</strong>
</div>
<div>
<asp:Label runat="server" ID="CompanyNameOrderedInLabel" Text='<%# Bind("PO_CompanyNameOrderedIn") %>'
Enabled="false">
</asp:Label>
</div>
</td>
</tr>
<tr>
<td>
<div>
<strong>Division</strong>
</div>
<div>
<asp:Label runat="server" ID="DivisionLabel" Enabled="false" Text='<%# Bind("PO_Division") %>'>
</asp:Label>
</div>
</td>
<td>
<div>
<strong>Payment Method</strong>
</div>
<div>
<asp:Label runat="server" ID="PaymentMethodLabel" EmptyMessage="Select..."
Text='<%# Bind("PO_PaymentMethod") %>'>
</asp:Label>
</div>
</td>
</tr>
<tr>
<td>
<div>
<strong>To Be Ordered By</strong>
</div>
<div>
<asp:Label runat="server" ID="ToBeOrderedByLabel" Text='<%# Bind("PO_ToBeOrderedBy") %>'>
</asp:Label>
</div>
</td>
</tr>
</table>
<telerik:RadGrid runat="server" ID="UnapprovedPOsItemsGrid" DataSourceID="UnapprovedPOsItemsDataSource"
OnItemDataBound="UnapprovedPOsItemsGrid_ItemDataBound" AutoGenerateColumns="false">
<MasterTableView CommandItemDisplay="Top" DataKeyNames="PO_ID" ShowHeadersWhenNoRecords="true"
GroupsDefaultExpanded="false" GroupLoadMode="server" ShowGroupFooter="true" DataSourceID="UnapprovedPOsItemsDataSource">
<CommandItemTemplate>
<asp:Label ID="ItemsBeingPurchasedLabel" runat="server" Width="170px" Text="Items Being Purchased"
Style="font-weight: bold; padding: 5px 0 5px 5px"></asp:Label>
</CommandItemTemplate>
<Columns>
<telerik:GridBoundColumn DataField="PO_ID" Visible="false">
</telerik:GridBoundColumn>
<telerik:GridBoundColumn HeaderText="Description of Item" DataField="POI_DescriptionOfItem" />
<telerik:GridBoundColumn HeaderText="Reason For Purchase" DataField="POI_ReasonForPurchase" />
<telerik:GridBoundColumn HeaderText="Quantity" DataField="POI_Quantity" FooterAggregateFormatString="<b>Total Quantity: </b>{0}" />
<telerik:GridBoundColumn HeaderText="Unit Price" DataField="POI_UnitPrice" FooterAggregateFormatString="<b>Total Price: </b>{0}" />
<telerik:GridBoundColumn HeaderText="Amount" DataField="POI_Amount" FooterAggregateFormatString="<b>Total Amount: </b>{0}" />
<telerik:GridBoundColumn HeaderText="Price Quoted" DataField="POI_PriceQuoted" FilterControlWidth="80px" />
<telerik:GridBoundColumn HeaderText="Price Estimated" DataField="POI_PriceEstimated" />
<telerik:GridBoundColumn HeaderText="Additional Costs" DataField="POI_AdditionalCosts"
FilterControlWidth="80px" />
<telerik:GridBoundColumn HeaderText="Explanation of Additional Costs" Display="false"
DataField="POI_AdditionalCostsExplanation" />
</Columns>
<NestedViewSettings DataSourceID="UnapprovedPOsItemsDataSource">
<ParentTableRelation>
<telerik:GridRelationFields DetailKeyField="POI_Item_ID" MasterKeyField="POI_Item_ID" />
</ParentTableRelation>
</NestedViewSettings>
<NestedViewTemplate>
<div style="padding-left: 30px; padding-top: 20px; padding-bottom: 20px;">
<table>
<tr>
<td>Description of Item
</td>
<td>
<asp:Label runat="server" ID="ItemDescriptionTextBox" Text='<%# Bind("POI_DescriptionOfItem") %>'></asp:Label>
</td>
</tr>
<tr>
<td>Reason For Purchase
</td>
<td>
<asp:Label runat="server" ID="ReasonForPurchaseTextBox" Text='<%# Bind("POI_ReasonForPurchase") %>'>
</asp:Label>
</td>
</tr>
<tr>
<td>Quantity
</td>
<td>
<asp:Label runat="server" ID="QuantityNumericTextBox" Text='<%# Bind("POI_Quantity") %>'>
</asp:Label>
</td>
</tr>
<tr>
<td>Unit Price
</td>
<td>
<asp:Label runat="server" ID="UnitPriceNumericTextBox" Text='<%# Bind("POI_UnitPrice") %>'>
</asp:Label>
</td>
</tr>
<tr>
<td>Amount (Q x Price)
</td>
<td>
<asp:Label runat="server" ID="AmountNumericTextBox" Text='<%# Bind("POI_Amount") %>'>
</asp:Label>
</td>
</tr>
<tr>
<td>Price Quoted
</td>
<td>
<asp:Label runat="server" ID="PriceQuotedNumericTextBox" Text='<%# Bind("POI_PriceQuoted") %>'>
</asp:Label>
</td>
</tr>
<tr>
<td>Price Estimated
</td>
<td>
<asp:Label runat="server" ID="PriceEstimatedNumericTextBox" Text='<%# Bind("POI_PriceEstimated") %>'>
</asp:Label>
</td>
</tr>
<tr>
<td>Additional Costs
</td>
<td>
<asp:Label runat="server" ID="AdditionalCostsNumericTextBox" Text='<%# Bind("POI_AdditionalCosts") %>'>
</asp:Label>
</td>
</tr>
<tr>
<td>Explanation of Additional Costs
</td>
<td>
<asp:Label runat="server" ID="ExplanationAdditionalCostsTextBox" Text='<%# Bind("POI_AdditionalCostsExplanation") %>'>
</asp:Label>
</td>
</tr>
</table>
<br />
</div>
</NestedViewTemplate>
</MasterTableView>
</telerik:RadGrid>
<table>
<tr>
<td>
<div>
<strong>Plus Sales Tax</strong>
</div>
<div>
<asp:Label runat="server" ID="PlusSalesTaxLabel" Text='<%# Bind("PO_PlusSalesTax") %>'>
</asp:Label>
</div>
</td>
</tr>
<tr>
<td>
<div>
<strong>Total Cost</strong>
</div>
<div>
<asp:Label runat="server" ID="TotalCostLabel" Text='<%# Bind("PO_TotalCost") %>'>
</asp:Label>
</div>
</td>
</tr>
<tr>
<td>
<div>
<strong>Supporting Documents</strong>
</div>
<asp:Panel runat="server" ID="supportingDocsPanel">
</asp:Panel>
</td>
</tr>
</table>
<asp:Button ID="btnUpdate" Text='<%# (Container is GridEditFormInsertItem) ? "Save" : "Update" %>'
runat="server" CommandName='<%# (Container is GridEditFormInsertItem) ? "PerformInsert" : "Update" %>' UseSubmitBehavior="true" />
<asp:Button ID="btnCancel" Text="Cancel" runat="server" CausesValidation="False"
UseSubmitBehavior="false" CommandName="Cancel" />
</FormTemplate>
</EditFormSettings>
</MasterTableView>
</telerik:RadGrid>