Count items in datasource of gridview (.net)

I have a GridView and bind a list to it:

List<T> items = T.GetItems();

GridView.DataSource = items.OrderBy(x => x.SomeValue);
GridView.DataBind();

Now in the process of databinding, I would like to access the total number of items in the datasource.

protected void GridView_RowDataBound(object sender, GridViewRowEventArgs e)
{
    //access total numb开发者_如何学Pythoner of datasource items
}

GridView.Rows or GridView.DataKeys is no help because the gridview is being built at this point. Of course, I could use items.Count() but I would prefer to access the underlying datasource directly.

Update

The solutions posted work without the OrderBy statement which I included later.

protected void GridView_RowDataBound(object sender, GridViewRowEventArgs e)
{
   var count = ((ICollection<T>)GridView.DataSource).Count;
}

I guess you could access the count of items by doing something like below:

      int count = (GridView1.DataSource as List<T>).Count;

Hope this Helps!!

Edit 1:

Added full method used.

    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {

        int count = (GridView1.DataSource as List<string>).Count;

    }

With my update included, the items count can be accessed with

var count = ((IEnumerable<T>)GridView.DataSource).Count();