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Question

I am writing out a list of links broken down into Year and Month like so :

<ul>
  <li>2012</li>
  <ul>
    <li>July (12)</li>
    <li>June (8)<li>
    (etc)
  </ul>
  <li>2011</li>
    <li>July (7)</li>
    (etc)
  </li>
</ul>

I am using two Repeaters, one for Years ("repYears") and a nested Repeater for Months ("repMonths"). During the ItemDataBound event for repYears, I databind repMonths. The data comes from a Generic List of these objects:

public class ArchiveItem
{
    public ArchiveItem(long Id, string Month, int Year)
    {
        PostId = Id;
        Month = Month;
        Year = Year;
    }

    public long PostId { get; set; }
    public string Month { get; set; }
    public int Year { get; set; }
}

So far I am successfully writing out the years and months.

What I need to do next is calculate the number of items per month (ie populate the number in the brackets from the HTML above).

To do this (during repMonths_ItemDataBound()) I need to know what year the repYears Repeater is currently on. That will give me the current month and current year from which I can then work out the count.

I can access the current month easily as I am within ItemDataBound so I can use e.Item.DataItem.

So how can I access the current DataItem value from the parent Repeater?

Answer 1

I'm not sure if i get the point since you haven't shown code.

If you are in the child repeater's ItemDataBound and you need to get a reference to the parent item's DataItem , you can use the NamingContainer property:

in ItemDataBound of the child-repeater:

var repeater = (Repeater)sender;
var parentItem = (RepeaterItem)repeater.NamingContainer;
var parentDataItem = parentItem.DataItem;