答案: 创建逻辑层
接下来,我们创建逻辑层,在这个例子中,逻辑层是十分简单的,只是起到说明作用。首先,我们新建一个类AuthroBiz类,并将其放在App_code文件夹中,并将类的代码修改如下:
public class AuthorsBiz
{
public AuthorsBiz()
{}
public DataTable GetAuthors()
{
AuthorsTableAdapters.AuthorsTableAdapter authorDB = new AuthorsTableAdapters.AuthorsTableAdapter();
return authorDB.GetAuthors();
}
public DataTable GetAuthorTitles(string authorID)
{
AuthorsTableAdapters.AuthorTitlesTableAdapter authorDB = new AuthorsTableAdapters.AuthorTitlesTableAdapter();
return authorDB.GetTitlesByAuthor(authorID);
}
}
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