Outer Join with Linq SharePoint 2010

With help from http://www.dotnetmafia.com/blogs/dotnettipoftheday/archive/2008/10/15/my-500th-post-left-outer-joins-with-linq.aspx, this is my outer join linq

 var outerX = from cust in dataContext.Customers.ToList()
 join ord in dataContext.Orders.ToList()
 on cust.CustomerID.ToString().Trim() 
 equals ord.CustomerID.CustomerID.ToString().Trim()
 into CustomerInformationGroup 
 from item in CustomerInformationGroup.DefaultIfEmpty(
     new OrdersItem { Title="-",OrderID=0,OrderDate=DateTime.Now,Quantity=0,ProductID=new ProductsItem(),CustomerID=new CustomersItem()})
     select new
     {
        CustomerID = cust.CustomerID,
        Title = cust.Title,
        City = cust.City,
        CustomerCountry = cust.CustomerCountry,
        JoiningDate = cust.JoiningDate,
        OrderTitle = item.Title
     };

dataGrdCustomer.DataSource = outerX.ToList();
          dataGrdCustomer.Columns.Clear();

            DataGridViewTextBoxColumn custName = new DataGridViewTextBoxColumn();
            custName.DataPropertyName = "Title";
            custName.Name = "Title";
            custName.HeaderText = "Name";

            dataGrdCustomer.Columns.Add(custName);

            DataGridViewTextBoxColumn custID = new DataGridViewTextBoxColumn();
            custID.DataPropertyName = "CustomerID";
            custID.Name = "CustomerID";
            custID.HeaderText = "CustomerID";
            dataGrdCustomer.Columns.Add(custID);

            DataGridViewTextBoxColumn custCity = new DataGridViewTextBoxColumn();
            custCity.DataPropertyName = "City";
            custCity.Name = "City";
            custCity.HeaderText = "City";
            dataGrdCustomer.Columns.Add(custCity);

            DataGridViewTextBoxColumn custCountry = new DataGridViewTextBoxColumn();
            custCountry.DataPropertyName = "CustomerCountry";
            custCountry.Name = "CustomerCountry";
            custCountry.HeaderText = "Country";
            dataGrdCustomer.Columns.Add(custCountry);

            DataGridViewTextBoxColumn prodTitle = new DataGridViewTextBoxColumn();
            prodTitle.DataPropertyName = "OrderTitle";
            prodTitle.Name = "OrderTitle";
            prodTitle.HeaderText = "OrderTitle";
            dataGrdCustomer.Columns.Add(prodTitle);

Here's the output table,