Navigating child rows of a relationship

Hi there,

Here's my problem :

I have 2 tables with a one-to-many relationship. I setup the relationship
via the dataset component.

ParentTable :

Parentkey
col1
col2

ChildTable :

Childkey
ParentKey
col1
col2

I Have setup the databindings like this :

textBox1.DataBindings.Add("Text",ds,"ParentTable.Parentkey");
textBox2.DataBindings.Add("Text",ds,"ParentTable.col1");
textBox3.DataBindings.Add("Text",ds,"ParentTable.col2");

textBox4.DataBindings.Add("Text",ds,"ParentTable.MyRelation.Childkey");
textBox5.DataBindings.Add("Text",ds,"ParentTable.MyRelation.Parentkey");
textBox6.DataBindings.Add("Text",ds,"ParentTable.MyRelation.col1");
textBox7.DataBindings.Add("Text",ds,"ParentTable.MyRelation.col2");

I setup a currency manager to track position and navigate in the dataset
like this :

myCurrency = (CurrencyManager)this.BindingContext[ds,"ParentTable"];
myCurrency.Position = 0;

The events to navigate through the ParentTable rows are as follows :

private void navPrevious_Click(object sender, System.EventArgs e)
{
if(myCurrency.Position != 0)
{
myCurrency.Position -= 1;
}
}

private void navNext_Click(object sender, System.EventArgs e)
{
myCurrency.Position += 1;
}

My question is : since the ParentTable can have one or many chlidren, how
can i navigate (Navigate next, previous,etc ) through these rows ? Do i have
to setup another currency manager ? I tried this :

myCurrency2 =
(CurrencyManager)this.BindingContext[ds,"TableParent.MyRelation"];
myCurrency2.Position = 0;

This doesn't seem to work if i setup the events like this :

private void navPrevious_Click(object sender, System.EventArgs e)
{
if(myCurrency2.Position != 0)
{
myCurrency2.Position -= 1;
}
}

private void navNext_Click(object sender, System.EventArgs e)
{
myCurrency2.Position += 1;
}

What am i doing wrong ? Is there a solution ?

Thanks a lot for the help.