What is wrong with way i have assigned a listBox DataSource to selected records from a database

I have a c# application writing to a postgresql database. I use Dapper

I also have a stored procedure that executes properly and selects some records
form the database. Out put from the stored procedure is correct

I am trying  to assign the output records to serve as the datasource for my list box

I have the codeslistBox.DataSource = records flagged as an error

Please see the error below as flagged. I think i have a syntax error 


My codeslistBox is define on the form  shown below. Thios may not be needed to resolve the
problem.

Whats does the error displayed mean and how can i resolve the error

Thanks Olukay