C# - Databinding Two Sql Tables To One Repeater?

I'm very new to using Linq-to-SQL, that's why I'm asking this question. I've searched the site, but can't seem to figure out how to do this.

My problem is:

I have a database mapped with LINQ to SQL:

Table 1: PersonalTasks

TaskId
Header
[Content]
IsDone
CreatedDate

Table 2: Comments

CommentId
TaskId
UserId
Comment
CreatedDate

I have a repeater:

<asp:Repeater ID="PersonalTaskRepeater" runat="server">
<ItemTemplate>
<%#Eval("Header") %>
<%# Eval("Content") %>
Task done: <asp:CheckBox ID="IsDoneCheckBox" runat="server" Checked='<%#Eval("IsDone") %>' /><img src="Images/tick-circle.png" />

Here i want to access the comment table, with the comments related to the taskID

</ItemTemplate>
</asp:Repeater>

I've tried using: <%#Eval("Comment.Comment1")%> but that throws this error:

DataBinding:
'System.Data.Linq.EntitySet`1[[Assistr.Models.Comment,
Assistr, Version=1.0.0.0,
Culture=neutral,
PublicKeyToken=null]]' does not
contain a property with the name
'Comment'.

My code-behind:

var tasks = db.PersonalTasks.OrderBy(x => x.IsDone).ToList();
PersonalTaskRepeater.DataSource = tasks;
PersonalTaskRepeater.DataBind();

Do I need to use 2 repeaters to do what I want to do or? :)