How to bind dropdownlist in EditItemTemplate in FormView control? - asp.net

Question

Using Visual Web Developer Express 2010 with ASP.NET 4.0.
I have a FormView and I want to set a default value from the database. I can't get it to bind to the value in the database. My FormView looks like this:
<asp:FormView
ID="frmOrderDetails"
DataSourceID="sdsFormOrderDetails"
runat="server"
DataKeyNames="orderId">
<EditItemTemplate>
<h3>Edit Order Details</h3>
<asp:Label ID="lblStrategy" Text="Strategy:" AssociatedControlID="ddlStrategies" runat="server" />
<asp:DropDownList SelectedValue='<%# Bind("strategyId") %>'
ID="ddlStrategies"
runat="server"
DataTextField="strategy"
DataValueField="strategyId"
DataSourceID="sdsStrategies"
/>
<asp:LinkButton
id="lnkUpdate"
Text="Update Order"
CommandName="Update"
Runat="server" />
|
<asp:LinkButton
id="lnkCancel"
Text="Cancel"
CommandName="Cancel"
Runat="server" />
</EditItemTemplate>
</asp:FormView>
<asp:SqlDataSource ID="sdsFormOrderDetails" runat="server"
ConnectionString="<%$ ConnectionStrings:LocalSQLServer %>"
ProviderName="<%$ ConnectionStrings:LocalSQLServer.ProviderName %>"
SelectCommand="usp_GetOrderDetails" SelectCommandType="StoredProcedure"
UpdateCommand="usp_UpdateOrder" UpdateCommandType="StoredProcedure">
<SelectParameters>
<asp:ControlParameter Name="orderId" ControlID="grdOrders" PropertyName="SelectedDataKey.Value" />
</SelectParameters>
<UpdateParameters>
<asp:ControlParameter Name="orderId" ControlID="grdOrders" />
</UpdateParameters>
</asp:SqlDataSource>
<asp:SqlDataSource ID="sdsStrategies" runat="server"
ConnectionString="<%$ ConnectionStrings:LocalSQLServer %>"
ProviderName="<%$ ConnectionStrings:LocalSQLServer.ProviderName %>"
SelectCommand="usp_GetStrategiesDropDown">
</asp:SqlDataSource>
The EditItemTemplate does not even load when I click the edit button on my FormView control, but I don't get an error message either.

Answer 1

You need to do the following to bind a DropDownList to the EditItemTemplate:
Add the DropDownList and its DataSource to the EditItemTemplate.
Set the DropDownList parameters:
DataSourceID="SqlDataSourceDropDownlist" SelectedValue=<%# Bind("ValueToBind") %>
DataTextField="ValueToDisplay" DataValueField="ValueToBind"
Set the ListView / FormView DataSource <UdateParameters>: <asp:Parameter Name="RankID" Type="Int32" />

Answer 2

you need to use formview Databound event like
protected void frmOrderDetails_DataBound(object sender, EventArgs e)
{
if (frmOrderDetails.CurrentMode == FormViewMode.Edit)
{
DropDownList ddlStrategies = (DropDownList)frmOrderDetails.FindControl("ddlStrategies");
ddlStrategies.SelectedValue = Your DB Value Goes here;
}
}