我'我有一个SQL插入问题在我的gridview

我有一个gridview，我已经设置允许插入到我的表的下一行，我有一个问题，虽然…我有2个插入语句和一个选择语句，在插入完成后更新表视图。我插入值到两个表…第一个更新一个人的信息，第二个更新旅行计划，将他们包括在旅行中。

第二个语句是我遇到问题的地方…当一个新的记录被插入到数据库中，一个新的PersonID被自动创建为一个人，因为我设置为PK和标识符的Person表，但我不确定如何采取新创建的PersonID，并将其插入到TripSchedule表。

下面是插入新用户的代码:

protected void AddNewCustomer(object sender, EventArgs e)
{
    string nFirstName = ((TextBox)GridView1.FooterRow.FindControl("txtFirstName")).Text;
    string nLastName = ((TextBox)GridView1.FooterRow.FindControl("txtLastName")).Text;
    string nEmergency = ((TextBox)GridView1.FooterRow.FindControl("txtEmergency")).Text;
    string nCell = ((TextBox)GridView1.FooterRow.FindControl("txtCell")).Text;
    string nAge = ((TextBox)GridView1.FooterRow.FindControl("txtAge")).Text;
    string nActivityCard = ((TextBox)GridView1.FooterRow.FindControl("txtActivityCard")).Text;
    string nInitials = ((TextBox)GridView1.FooterRow.FindControl("txtInitials")).Text;
    string nBoat = ((TextBox)GridView1.FooterRow.FindControl("txtBoat")).Text;
    string nGroup = ((TextBox)GridView1.FooterRow.FindControl("txtGroup")).Text;
    SqlConnection con = new SqlConnection(strConnString);
    SqlCommand cmd = new SqlCommand();
    cmd.CommandType = CommandType.Text;
    cmd.CommandText = "insert into Person(FirstName, LastName, Emergency#, Cell#, Age, ActivityCard, CraftType, Initials, Group#) " +
        "values(@FirstName, @LastName, @Emergency, @Cell, @Age, @ActivityCard, @Boat, @Initials, @Group);" +
        "insert into TripSchedule(TripType, PersonID, Time, Date) values ('" + ddlTripType.SelectedItem + "', WHAT GOES HERE?, '" + ddlTripTime.SelectedItem + "', '" + TextBox1.Text + "');" + 
        "SELECT Person.PersonID, Person.FirstName AS FirstName, Person.LastName AS LastName, Person.Emergency# AS Emergency#, Person.Cell# AS Cell#, Person.Age AS Age, " +
        "Person.ActivityCard AS ActivityCard, Person.CraftType AS CraftType, Person.Initials AS Initials, Person.Group# AS Group# " +
        "FROM Person INNER JOIN " +
        "TripSchedule ON Person.PersonID = TripSchedule.PersonID where TripSchedule.Date = '" + TextBox1.Text + "' and " +
        "TripSchedule.Time = '" + ddlTripTime.SelectedItem + "' and TripSchedule.TripType = '" + ddlTripType.SelectedItem + "';";
    cmd.Parameters.Add("@FirstName", SqlDbType.VarChar).Value = nFirstName;
    cmd.Parameters.Add("@LastName", SqlDbType.VarChar).Value = nLastName;
    cmd.Parameters.Add("@Emergency", SqlDbType.NChar).Value = nEmergency;
    cmd.Parameters.Add("@Cell", SqlDbType.NChar).Value = nCell;
    cmd.Parameters.Add("@Age", SqlDbType.NChar).Value = nAge;
    cmd.Parameters.Add("@ActivityCard", SqlDbType.NChar).Value = nActivityCard;
    cmd.Parameters.Add("@Initials", SqlDbType.NChar).Value = nInitials;
    cmd.Parameters.Add("@Boat", SqlDbType.VarChar).Value = nBoat;
    cmd.Parameters.Add("@Group", SqlDbType.VarChar).Value = nGroup;
    GridView1.DataSource = GetData(cmd);
    GridView1.DataBind();
}

SqlCommand cmd = new SqlCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = "INSERT INTO dbo.Person(FirstName, LastName, Emergency#, Cell#, Age, ActivityCard, CraftType, Initials, Group#) " +
                  "VALUES(@FirstName, @LastName, @Emergency, @Cell, @Age, @ActivityCard, @Boat, @Initials, @Group);" +
                  "SELECT SCOPE_IDENTITY();";
cmd.Parameters.Add("@FirstName", SqlDbType.VarChar).Value = nFirstName;
cmd.Parameters.Add("@LastName", SqlDbType.VarChar).Value = nLastName;
cmd.Parameters.Add("@Emergency", SqlDbType.NChar).Value = nEmergency;
cmd.Parameters.Add("@Cell", SqlDbType.NChar).Value = nCell;
cmd.Parameters.Add("@Age", SqlDbType.NChar).Value = nAge;
cmd.Parameters.Add("@ActivityCard", SqlDbType.NChar).Value = nActivityCard;
cmd.Parameters.Add("@Initials", SqlDbType.NChar).Value = nInitials;
cmd.Parameters.Add("@Boat", SqlDbType.VarChar).Value = nBoat;
cmd.Parameters.Add("@Group", SqlDbType.VarChar).Value = nGroup;
conn.Open();
int newPersonID = (int)cmd.ExecuteScalar();
conn.Close();