Question

I have a list object

List<Documents>

, and inside that I have another list list of accounts.

List<Accounts>

From my codebehind I connect List to a repeater control

rptDocumentListings.DataSource = List<Documents>;
rptDocumentListings.DataBind();

While the repeater loops thru each item in List I want it to also loop thru each nest list of accounts, and then render out with
tags. Here is what I’ve tried so far:

//in the dataRepeater
<%# parseAccountNumbers(Eval("Accounts"))%>

//method in codebehind
public string parseAccountNumbers(List<Account> accounts)
    {
        string allAccounts = string.Empty;

        foreach (var item in accounts)
        {
            allAccounts += string.Format("{0}<br />", item.AccountNumber);
        }

        return allAccounts;
    }

The error I get is ‘Cannot convert from from ‘Object’ to ‘System.Collections.List’
Can someone please point me in the right direction? Thanks in advance.

Answer 1

Change

<%# parseAccountNumbers(Eval("Accounts"))%>

To

<%# parseAccountNumbers((List<Account>)Eval("Accounts"))%>

DataBinder.Eval returns an Object and your method expects a List<Account>.