拆分ASP.NET中的数据

I am trying to display a column from my local database into a dropdown list. The problem is that I would need to split the data so that they are not displayed all in one line. I have used the ";" to separate the data and then using the split(";") method to split them. I have tried the code that I've wrote below but it's not working. Any help will be appreciated.I am trying to display a column from my local d