Currently I'm getting a list of HeaderColumns from the following XML snippet:

<PerformancePanel>
  <HeaderColumns>
    <column performanceId="12" text="Over last month %" />
    <column performanceId="13" text="Over last 3 months %" />
    <column performanceId="16" text="1 Year %" />
    <column performanceId="18" text="3 Years % p.a." />
    <column performanceId="20" text="5 Years % p.a." />
    <column performanceId="22" text="10 Years % p.a." />
  </HeaderColumns>
</PerformancePanel>

from which I create an object as follows: (admitedly similar to an earlier question!)

var performancePanels = new
{
    Panels = (from panel in doc.Elements("PerformancePanel")
            select new
            {
                HeaderColumns = (from column in panel.Elements("HeaderColumns").Elements("column")
                                 select new
                                 {
                                     PerformanceId = (int)column.Attribute("performanceId"),
                                     Text = (string)column.Attribute("text")
                                 }).ToList(),
              }).ToList()
};

I'd like if HeaderColumns was a Dictionary() so later I extract the values from the anonymous object like follows:

Dictionary<int, string> myHeaders = new Dictionary<int, string>();
foreach (var column in performancePanels.Panels[0].HeaderColumns)
{
    myHeaders.Add(column.PerformanceId, column.Text);
}

I thought I could achieve this with the Linq to XML with something similar to this

HeaderColumns = (from column in panel.Elements("HeaderColumns").Elements("column")
                 select new Dictionary<int, string>()
                 {
                     (int)column.Attribute("performanceId"),
                     (string)column.Attribute("text")
                 }).ToDictionary<int,string>(),

but this doesn't work because

1. ToDictionary() needs a Func parameter and I don't know what that is / how to implement it, and
2. the code's probably wrong anyway!

Could somebody please suggest how I can achieve the result I need? Thanks.