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checkboxlist save check items to SQL (not concatenate)

Posted By:      Posted Date: October 20, 2010    Points: 0   Category :ASP.Net

I search through the web and I only found out how to concatenate.

I have a checkboxlist that is a list of Authors, it is included in my ADD BOOK form. Take note that a book can have many author so I need checkboxlist.

Instead of having this in my SQL table.

Table 1: Book

Book_ID      Book_Title       Book_Author

1                 My Book          Mark, Mike, John  <-- Concatenate

I need this.

Table 1: Book

Book_ID      Book_Title        Book_Author

1                 My Book            Mark

1                 My Book            Mike

1                 My Book            John

It's required that for one row there's only one author but it can have the same book id and title.

My current code

string add = "insert into Book values (@booktitle, @author);
SqlCommand cmd = new SqlCommand(add, con);
cmd.Parameters.Add("@booktitle", SqlDbType.NVarChar).Value = booktitle.Text;

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