Databinding to a textbox inside a repeater

[Guest]

Hi

I have a textbox inside a repeater and want to bind data
to the textbox using a method.
My html is:
<asp:TextBox ID="OriginalTextBox" ReadOnly="True"
Width="220px" Height="120px" Text='<%# GetOriginalText() %

' Runat="server" />

and in C# my method GetOriginalText() is:

public String GetOriginalText()
{
Webtest.TranslationDB translationDetails = new
Webtest.TranslationDB();

DataSet ds=new DataSet();
OleDbDataAdapter oda=new OleDbDataAdapter();
oda=translationDetails.GetTextTranslation
(myTaskName,myOriginalLanguage);
oda.Fill(ds,"trans");
return ds.ToString();
}

What I get in the textbox is:
System.Data.DataSet

I've tried returning the DataSet as well from
GetOriginalText() but that doesn't work.
What should I be returning in the method?

Thanks in advance.