Using DropdownList within Repeater

Question

User-1876300537 posted

 I'm creating a form with a drop down list box inside a repeater control. I'm having trouble setting the "SelectedValue" of the listbox. I've found numerous examples on line where it's being set declaritively but I am unable to do this. It is not available through intellisense and of course I get an error when I try to use it.

Here is my code:

<ItemTemplate>
            <tr>
                <td align="center"><asp:DropDownList ID="lstMonths" DataSourceID="SqlDataSourceMonths" DataTextField="MonthName"
                        DataValueField="MonthID" runat="server"></asp:DropDownList></td>
                <td align="right"><%#Eval("YearCollected")%></td>
                <td  align="right"><%#Eval("ADAPercentage")%>%</td>
                <td  align="right"><%#Eval("AvgDailyAttendance")%></td>
                <td align="center"><asp:LinkButton ID="LinkButton1" Commandname="edit" CausesValidation="false" CommandArgument='<%#Eval("ProgramAvgDailyAttendanceID")%>'                                                 runat="server">Edit</asp:LinkButton></td>
                <td align="center"><asp:LinkButton ID="lnkDeleteADA" Commandname="delete" CausesValidation="false" CommandArgument='<%#Eval("ProgramAvgDailyAttendanceID")%>'                                             runat="server">Delete</asp:LinkButton></td>
            </tr>

</ItemTemplate>

Any help would be much appreciated.

Answer 1

User-1995538749 posted

Even though the SelectedValue property doesn't appear as an available property of the DropDownList within intellisense, it can still be used. What is the error you are receiving?

Answer 2

User-1876300537 posted

 Code I'm using now:

<ItemTemplate>
            <tr>
                <td align="center"><asp:DropDownList ID="lstMonths" DataSourceID="SqlDataSourceMonths" DataTextField="MonthName"
                        DataValueField="MonthID" SelectedValue="<%#Eval("MonthID")%>" runat="server"></asp:DropDownList></td>
                <td align="right"><%#Eval("YearCollected")%></td>
                <td  align="right"><%#Eval("ADAPercentage")%>%</td>
                <td  align="right"><%#Eval("AvgDailyAttendance")%></td>
                <td align="center"><asp:LinkButton ID="LinkButton1" Commandname="edit" CausesValidation="false" CommandArgument='<%#Eval("ProgramAvgDailyAttendanceID")%>'                                                 runat="server">Edit</asp:LinkButton></td>
                <td align="center"><asp:LinkButton ID="lnkDeleteADA" Commandname="delete" CausesValidation="false" CommandArgument='<%#Eval("ProgramAvgDailyAttendanceID")%>'                                             runat="server">Delete</asp:LinkButton></td>
            </tr>
        </ItemTemplate>

I'm not getting an error msg, but the DropDownList control is not rendering html. When I "view source" in the browser I see the <asp: DropDownList> tag rather than html. When I remove the declarative SelectedValue from the DDL, the html for the list box renders as normal in the browser.

Thoughts?

Thanks.


 

Answer 3

User-1995538749 posted

Try first changing the double-quotes around your SelectedValue property to single-quotes: 

<itemtemplate>
	<tr>
		<td align="center">
			<asp:dropdownlist id="lstMonths" datasourceid="SqlDataSourceMonths" datatextfield="MonthName"
				datavaluefield="MonthID" selectedvalue='<%# Bind("MonthID") %>' runat="server">
			</asp:dropdownlist>
		</td>
		<td align="right">
			<%#Eval("YearCollected")%>
		</td>
		<td align="right">
			<%#Eval("ADAPercentage")%>%
		</td>
		<td align="right">
			<%#Eval("AvgDailyAttendance")%>
		</td>
		<td align="center">
			<asp:linkbutton id="LinkButton1" commandname="edit" causesvalidation="false" commandargument='<%#Eval("ProgramAvgDailyAttendanceID")%>'
				runat="server">Edit</asp:linkbutton>
		</td>
		<td align="center">
			<asp:linkbutton id="lnkDeleteADA" commandname="delete" causesvalidation="false" commandargument='<%#Eval("ProgramAvgDailyAttendanceID")%>'
				runat="server">Delete</asp:linkbutton>
		</td>
	</tr>
</itemtemplate>

Answer 4

User-1876300537 posted

 Thanks! The single quotes fixed the issue.