Question

I am loading a Dropdown inside a repeater but i am unable to see the repeater.Why i am unable to see it?

aspx:

<asp:Repeater ID="Repeater1" runat="server" onitemdatabound="Repeater1_ItemDataBound">    
    <ItemTemplate> 
       <table>
           <tr>
             <td>
               <asp:DropDownList ID="DropDownList1" runat="server">                     
                  <asp:ListItem>Select</asp:ListItem> <asp:ListItem>Left</asp:ListItem> 
                  <asp:ListItem>Right</asp:ListItem> 
                  <asp:ListItem>SubString</asp:ListItem>
               </asp:DropDownList> 
              <asp:DropDownList ID="DropDownList6" runat="server"> </asp:DropDownList> 

codebehind:

 protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{

        DataTable dt = new DataTable();
        dt = Common.LoadExample();
        DropDownList ddl = (DropDownList)e.Item.FindControl("DropDownList6") ;
        ddl.DataSource = dt;
        ddl.DataTextField = "Name";
        ddl.DataValueField = "Name";
        ddl.DataBind();

}

// datatable for loading

   public static DataTable LoadExample()
    {
        DBAccess objDBAccess = new DBAccess();
        DataTable dt = new DataTable();
        try
        {
            objDBAccess.AddParameter("@Name", SqlDbType.VarChar);
            dt = objDBAccess.ExecuteDataTable("usp_test");
            return dt;
        }
        catch 
        {

            return null;
        }

    }

Answer 1

I assume the reason is that you haven’t checked for the ItemType, therefore you’re getting an exception because the header doesn’t contain the DropDownList but only the items:

protected void Repeater1_ItemDataBound(Object Sender, RepeaterItemEventArgs e) {
    // This event is raised for the header, the footer, separators, and items.
    // Execute the following logic for Items and Alternating Items.
    if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) {
        // ...
    }
}

Of course there are other reasons why a repeater is not visible.

• Repeater or one of it’s container controls is Visible="false"
• it’s DataSource is null or empty
• you have not databound it at all
• …. (without code it’s difficult to help further)

Edit Please don’t comment but edit your question with important informations.

The breakpoint is not going inside of the repeater item data bound –
Newbie 25 mins ago

Then you have not DataBind it or the DataSource is null or empty. You should show us the code where you assign the datasource and call databind.