C# Repeater with a Varying Number of Rows Each Able to Return a Different String With a CheckBox/Other Method

The Asp.net website I am creating uses a Repeater to display a list of Strings concerning duplicates or missing entries from two databases. There is another list of strings created in parallel of SQL statements with one SQL statement corresponding to the same numbered string in the Repeater list. The number of strings in the lists depends on the databases chosen and can range from zero to 100+.

Question: Since the Repeater rows vary in number based on the database, I am trying to find some method to create a checkbox/button in each row. When clicked, the checkbox/button will find the appropriate SQL statement in the other list for the row in a separate method. Does anyone have an idea as to how a variable number of checkboxes could be created?