Set value of TextBox with value from DataSet, looping through.

I have a form with 5 TextBox contorls with id's like tbHeadline1, tbHeadline2. What I am trying to do is use a for loop to iterate through the controls and based on the DataSet and i value populate the text attribute. I tried this, but each time it comes back as a null object:

for (int i = 0; i < newsItems.Count; i++){
 TextBox title = (TextBox)Page.FindControl("tbHeadline" + i.ToString());if(title != null)


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