Detailsview in updatepanel with dropdownlist SelectedIndexChanged to update textbox(s) val

I am new to the updatepanel and need some help. I have a gridview control and a detailsview control. The detailsview control is displayed for edits on the gridview row select command. These controls are wrapped in an updatepanel, there are 2 textboxes that I want to update with calculated values based on the selected value of the dropdownlist. I was trying to accomplish this by using the SelectedIndexChanged of the ddlScheduleType dropdownlist in codbehind.

How do I get this to work, am I on the right track? Any help would be greatly appreciated, code is below.

Protected

Sub ddlScheduleType_SelectedIndexChanged(ByVal senderAsObject,ByVal eAs System.EventArgs)'Get a refernce to the dropdownlist:Dim ddlScheduleTypeAs DropDownList =CType(CType(sender, DetailsView).FindControl("ddlScheduleType"), DropDownList)Dim nDistroyDaysAsInteger = Utility.GetBoxCatDestroyDays(ddlScheduleType.SelectedValue)Dim ctrlTbDYAs TextBox =CType(CType(sender, DetailsView).FindControl("tbDestroyYear"), TextBox)Dim ctrlTbDMAs TextBox =CType(CType(sender, DetailsView).FindControl("tbDestroyMonth"), TextBox)Dim ctrlTbDEAs TextBox =CType(CType(sender, DetailsView).FindControl("tbDateEnd"), TextBox)

<%

@dotnet.itags.org.PageLanguage="VB"MasterPageFile="~/Default.master"AutoEventWireup="false"CodeFile="drEdit.aspx.vb"Inherits="drEdit"title="Untitled Page" %>

<%

@dotnet.itags.org.RegisterAssembly="AjaxControlToolkit"Namespace="AjaxControlToolkit"TagPrefix="ajaxtoolkit" %>

<%

@dotnet.itags.org.RegisterNamespace="CustomBoundField"TagPrefix="custom" %>

<

asp:ContentID="Content1"ContentPlaceHolderID="MainContent"Runat="Server">

<

ajax:ScriptManagerid="sm1"EnablePartialRendering="True"runat="server"/><table><tr><tdalign="Center"valign="Top"><ajax:UpdatePanelid="up2"runat="server"><contentTemplate><asp:GridViewRunat="server"Id="gvDrMaster"GridLines="Both"cellpadding="1"cellspacing="0"Headerstyle-BackColor="#BDCFE7"Headerstyle-Font-Names="Verdana,Helvetica,Arial;"Headerstyle-Font-Size="8"BackColor="#E7EFFF"Font-Names="Verdana,Helvetica,Arial;"Font-Size="8"BorderColor="Black"DataSourceID="SqlDsMaster"DataKeyNames="dr_id"AllowPaging="True"AllowSorting="True"PageSize="50"AutoGenerateColumns="False"><Columns><asp:CommandFieldShowSelectButton="True"/><asp:BoundFieldDataField="box_barcode"HeaderText="Barcode"/><asp:BoundFieldDataField="box_description"HeaderText="Description"HeaderStyle-HorizontalAlign=LeftItemStyle-HorizontalAlign=left/><asp:BoundFieldDataField="box_location"HeaderText="Location"/><asp:BoundFieldDataField="status_name"HeaderText="Status"/><asp:BoundFieldDataField="site_name"HeaderText="Site"/><asp:BoundFieldDataField="dr_id"ReadOnly="True"HeaderText=""HeaderStyle-Width="0"/><asp:BoundFieldDataField="box_site"ReadOnly=trueHeaderText=""HeaderStyle-Width="0"/></Columns><SelectedRowStyleBackColor=AliceBlue/></asp:GridView><triggers><ajax:controlValueTriggercontrolid="gvDrmaster"propertyname="Select"/></triggers></contentTemplate></ajax:UpdatePanel></td><tdalign="Left"valign="Top"><ajax:UpdatePanelid="up1"UpdateMode=Alwaysrunat="server"><contentTemplate><asp:DetailsViewDataKeyNames="dr_id"DataSourceID="SqlDsDetail"GridLines="Both"cellpadding="1"cellspacing="0"Headerstyle-BackColor="#BDCFE7"Headerstyle-Font-Names="Verdana,Helvetica,Arial;"Headerstyle-Font-Size="8"BackColor="#E7EFFF"Font-Names="Arial"Font-Size="8"BorderColor="Black"HeaderText="Author Details"AutoGenerateRows="False"HeaderStyle-Font-Bold="True"OnItemUpdated="DVAfterUpdate"ID="dvDrMaster"runat="server"><Fields><asp:BoundFieldDataField="dr_id"HeaderText="ID"ReadOnly="True"ControlStyle-CssClass="dvDataField"/><asp:BoundFieldDataField="box_barcode"HeaderText="Barcode"ControlStyle-CssClass="dvDataField"/><custom:BoundTextBoxFieldCssClass="dvDataField"DataField="box_description"HeaderText="Description"TextMode="MultiLine"Rows="5"Columns="50"Wrap="True"/><asp:TemplateFieldHeaderText="Box Category"><ItemTemplate><asp:Labelid="lblScheduleType"runat="server"Text='<%# Container.DataItem("schedule_record_type")%>'/></ItemTemplate><EditItemTemplate><asp:DropDownListrunat="server"id="ddlScheduleType"DataSourceID="dsScheduleType"SkinID=ddlBackColor="Pink"DataTextField="schedule_record_type"DataValueField="schedule_id"AutoPostBack=trueOnSelectedIndexChanged="ddlScheduleType_SelectedIndexChanged"SelectedValue='<%# Bind("box_schedule_type")%>'/></EditItemTemplate></asp:TemplateField>

<asp:TemplateFieldHeaderText="Status"><ItemTemplate><asp:Labelid="lblStatus"runat="server"Text='<%# Container.DataItem("status_name")%>'/></ItemTemplate><EditItemTemplate><asp:DropDownListrunat="server"id="ddlStatus"DataSourceID="dsStatus"SkinID=ddlBackColor="Pink"DataTextField="status_name"DataValueField="status_id"SelectedValue='<%# Bind("box_status")%>'/></EditItemTemplate></asp:TemplateField>

<asp:TemplateFieldHeaderText="Site"><ItemTemplate><asp:Labelid="lblSiteName"runat="server"Text='<%# Container.DataItem("site_name")%>'/></ItemTemplate><EditItemTemplate><asp:DropDownListrunat="server"id="ddlSite"DataSourceID="dsSite"BackColor="Pink"SkinID=ddlDataTextField="site_name"DataValueField="site_id"SelectedValue='<%# Bind("box_site")%>'/></EditItemTemplate></asp:TemplateField>

<asp:TemplateFieldHeaderText="Box Location"><ItemTemplate><asp:Labelid="lblLocation"runat="server"Text='<%# Container.DataItem("box_location")%>'/></ItemTemplate><EditItemTemplate><asp:DropDownListrunat="server"id="ddlBoxLocation"DataSourceID="SQLDSLocation"BackColor="Pink"SkinID=ddlDataTextField="location_id"DataValueField="location_id"SelectedValue='<%# Bind("box_location")%>'/></EditItemTemplate></asp:TemplateField>

<asp:TemplateFieldHeaderText="Cardholder Data"><ItemTemplate><asp:Labelid="lblCardholder"runat="server"Text='<%# Container.DataItem("box_cardholder_desc")%>'/></ItemTemplate><EditItemTemplate><asp:DropDownListrunat="server"id="ddlCardholder"BackColor="Pink"SkinID=ddlDataTextField="box_cardholder_desc"DataValueField="box_cardholder"SelectedValue='<%# Bind("box_cardholder")%>'><asp:ListItemSelected="True"Value=""Text=""/><asp:ListItemValue="Y"Text="Yes"/><asp:ListItemValue="N"Text="No"/></asp:DropDownList>

</EditItemTemplate></asp:TemplateField>

<asp:TemplateFieldHeaderText="Dept"><ItemTemplate><asp:Labelid="lblDept"runat="server"Text='<%# Container.DataItem("dept_name")%>'/></ItemTemplate><EditItemTemplate><asp:DropDownListrunat="server"id="ddlDept"DataSourceID="SQLdsDepartment"BackColor="Pink"SkinID=ddlDataTextField="dept_name"DataValueField="dept_id"SelectedValue='<%# Bind("fiserv_dept")%>'/></EditItemTemplate></asp:TemplateField>

<asp:BoundFieldDataField="date_start"HeaderText="Start Date"ControlStyle-CssClass="dvDataField"/>

<asp:TemplateFieldHeaderText="End Date"><ItemTemplate><asp:Labelid="lblDateEnd"runat="server"Text='<%# Container.DataItem("date_end")%>'/></ItemTemplate><EditItemTemplate><asp:TextBoxID="tbDateEnd"SkinID=tbrunat="server"Text='<%# Bind("date_end")%>'/></EditItemTemplate></asp:TemplateField>

<asp:TemplateFieldHeaderText="Destroy Month"><ItemTemplate><asp:Labelid="lblDestroyMonth"runat="server"Text='<%# Container.DataItem("date_dest_month")%>'/></ItemTemplate><EditItemTemplate><asp:TextBoxID="tbDestroyMonth"SkinID=tbrunat="server"ReadOnly=trueText='<%# Bind("date_dest_month")%>'/></EditItemTemplate></asp:TemplateField>

<asp:TemplateFieldHeaderText="Destroy Year"><ItemTemplate><asp:Labelid="lblDestroyYear"runat="server"Text='<%# Container.DataItem("date_dest_year")%>'/></ItemTemplate><EditItemTemplate><asp:TextBoxID="tbDestroyYear"SkinID=tbrunat="server"ReadOnly=trueText='<%# Bind("date_dest_year")%>'/></EditItemTemplate></asp:TemplateField>

<asp:CommandFieldShowEditButton="True"/></Fields></asp:DetailsView><Triggers><atlas:ControlEventTriggerControlID="ddlScheduleType"EventName="SelectedIndexChanged"/></Triggers></contentTemplate>

</ajax:UpdatePanel>

</td></tr></table><asp:SqlDataSourceID="SqlDsMaster"runat="server"SelectCommand="select dr_id, box_barcode, box_description, box_location, status_name, box_site, site_name from view_dr_master where box_site not in(97,98)"ConnectionString="<%$ ConnectionStrings:RetentionConnectionString%>"></asp:SqlDataSource><asp:SqlDataSourceID="SqlDsDetail"runat="server"ConnectionString="<%$ ConnectionStrings:RetentionConnectionString%>"SelectCommand="SELECT dr_id, box_barcode, box_schedule_type, box_description, box_location, box_status, status_name, box_site, site_name, fiserv_dept, dept_name,

date_start, date_end, date_dest_month, date_dest_year, box_cardholder, box_cardholder_desc

FROM view_dr_master WHERE (dr_id = @dotnet.itags.org.dr_id)">

<SelectParameters><asp:ControlParameterControlID="gvDrMaster"Name="dr_id"PropertyName="SelectedValue"Type="String"/></SelectParameters></asp:SqlDataSource>

<asp:SQLDataSourceID="dsScheduleType"Runat="Server"SelectCommand="SELECT schedule_id, schedule_record_type from dr_schedule GROUP BY schedule_id, schedule_record_type Union Select 0 schedule_id, 'Please select a box category' schedule_record_type From dr_schedule ORDER BY schedule_record_type"DataSourceMode="DataSet"ConnectionString="<%$ ConnectionStrings:RetentionConnectionString%>"></asp:SQLDataSource><asp:SQLDataSourceID="dsStatus"Runat="Server"SelectCommand="SELECT status_id, status_name from dr_status Union Select '' status_id, 'Please select a box status.' status_name from dr_status ORDER BY status_id "DataSourceMode="DataSet"ConnectionString="<%$ ConnectionStrings:RetentionConnectionString%>"/><asp:SQLDataSourceID="dsSite"Runat="Server"SelectCommand="select site_id, site_name from dr_site order by site_id"DataSourceMode="DataSet"ConnectionString="<%$ ConnectionStrings:RetentionConnectionString%>"/><asp:SQLDataSourceID="SQLDSLocation"Runat="Server"DataSourceMode="DataSet"ConnectionString="<%$ ConnectionStrings:RetentionConnectionString%>"></asp:SQLDataSource>

<asp:SQLDataSourceID="SQLdsDepartment"Runat="Server"SelectCommand="select dept_id, dept_name from dr_departments"DataSourceMode="DataSet"ConnectionString="<%$ ConnectionStrings:RetentionConnectionString%>"/>

</

asp:Content>Dim dtDestroyDateAs DateTime = dtDestroyDate.AddDays(nDistroyDays)

ctrlTbDY.Text = dtDestroyDate.Year

ctrlTbDM.Text = dtDestroyDate.Month

EndSub

Never mind figured it out, removed

<Triggers><atlas:ControlEventTriggerControlID="ddlScheduleType"EventName="SelectedIndexChanged"/></Triggers>