c# - C#でSQL Serverで配列/コレクションを送信する方法

Question

正常に動作し、最初のテーブル値に挿入します

SqlCommand command = new SqlCommand("INSERT INTO Author (LastName, FirstName, MiddleName,BirthDate)VALUES(@LastName, @FirstName, @MiddleName,@BirthDate);SELECT SCOPE_IDENTITY()", _connection);
command.Parameters.AddWithValue("@LastName", LastNameTextBox.Text);
command.Parameters.AddWithValue("@FirstName", FirstNameTextBox.Text);
command.Parameters.AddWithValue("@MiddleName", MiddleNameTextBox.Text);
command.Parameters.AddWithValue("@BirthDate", BirthDateTextBox.Text);
string authoriD = command.ExecuteScalar().ToString();

ここに問題があり、解決できません

SqlCommand commandB = new SqlCommand("INSERT INTO Book(AuthorID,Book,Genre,Pages)VALUES(@AuthorID,@Book,@Genre,@Pages)", _connection);
commandB.Parameters.AddWithValue("@AuthorID", authoriD);

for (int i = 0; i < AddBooks.BookTextBoxValue.Count; i++)
{
    commandB.Parameters.AddWithValue("@Book", AddBooks.BookTextBoxValue[i]);
}

foreach (string itemgenre in AddBooks.GenreTextBoxValue)
{
    commandB.Parameters.AddWithValue("@Genre", itemgenre);
}

foreach (string itempages in AddBooks.PagesTextBoxValue)
{
    commandB.Parameters.AddWithValue("@Pages", itempages);
}

commandB.ExecuteNonQuery();