Why data is not displayed on my asp.net webpage?

Question

I am developing Canteen Management System where I am displaying menuList from Database using gridview like given below.. ( this is Menu.aspx page)

<asp:DataList ID="DataList1" runat="server" RepeatColumns="3" RepeatDirection="Horizontal" OnItemCommand="DataList1_ItemCommand">
    <ItemTemplate>
        <table class="nav-justified" style="height: 111px">
            <tr>
                <td>
                    <asp:Label ID="Label1" runat="server" Text='<%# Eval("menuName") %>'></asp:Label>
                </td>
            </tr>
            <tr>
                <td>
                    <asp:ImageButton ID="ImageButton1" runat="server" CommandName="viewDetail" CommandArgument='<%# Eval("Id") %>' ImageUrl='<%# Eval("menuImage") %>' />
                </td>
            </tr>
            <tr>
                <td>
                    <asp:Label ID="Label2" runat="server" Text='<%# Eval("menuPrice") %>'></asp:Label>
                </td>
            </tr>
        </table>
    </ItemTemplate>
</asp:DataList>
<br />
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:Cms_AspFormsConnectionString %>" SelectCommand="SELECT [menuName], [menuPrice], [menuImage], [Id] FROM [menuInfo]"></asp:SqlDataSource>

This is Menu.aspx.cs page

protected void DataList1_ItemCommand(object source, DataListCommandEventArgs e)
{
    if ( e.CommandName == "viewDetail" )
    {
        Response.Redirect("MenuDetails.aspx?Id=" + e.CommandArgument.ToString());
    }
}

but When i run this this it's showing nothing, ( when i go to source page it was all empty at like given below..)

<div>
        
        <br />
   
</div>

Why it' showing empty? and how to resolve this?

Well, in your event code, does a debug.print e.commandArugment show any value before you jump to the other page? and if you type in the id by hand into the url, does the other page work?? — Albert D. Kallal
– Albert D. Kallal, Commented Oct 15, 2021 at 22:20

user16922209 · Accepted Answer · 2021-10-15 21:09:32Z

0

Add DataSourceID="SqlDataSource1" to the DataList tag. Data source was not set for the control.

answered Oct 15, 2021 at 21:09

user16922209

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