從SQL插入查詢中獲取新記錄主鍵ID以將相同值插入另一個表中？

Question

我有以下C＃

protected void add_button_Click(object sender, EventArgs e)
{
    string teamname = team_name_tb.Text;
    string teamstatus = "Not Started";
    string teamnotes = team_notes_tb.Text;
    string sprintid = sprint_select.SelectedValue;

    string ConnectionString = WebConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
    SqlConnection myConnection = new SqlConnection(ConnectionString);

    myConnection.Open();

            String query = "INSERT INTO teams (team_name, status, notes) 
                            VALUES (@team_name, @status, @notes); 
                            INSERT INTO sprints_vs_teams (sprint_id, team_id)                    
                            VALUES (@sprint_id, @team_id)";

            SqlCommand myCommand = new SqlCommand(query, myConnection);
            myCommand.Parameters.AddWithValue("@team_name", teamname);
            myCommand.Parameters.AddWithValue("@status", teamstatus);
            myCommand.Parameters.AddWithValue("@notes", teamnotes);
            myCommand.Parameters.AddWithValue("@sprint_id", sprintid);
            myCommand.Parameters.AddWithValue("@team_id", ????);

            myCommand.ExecuteNonQuery();
            myConnection.Close();
}

在teams表中，主鍵是team_id我希望能夠獲取this的值並將其插入到查找表中的team_id字段中，我有sprints_vs_teams 。 有沒有這樣做的方法，如果可以的話，你可以提供一些指導，請注意我對C＃很新。 任何幫助將不勝感激。

修改后的代碼

protected void add_button_Click(object sender, EventArgs e)
{
    String user = Session["user_id"].ToString();
    string teamname = team_name_tb.Text;
    string teamstatus = "Not Started";
    string teamnotes = team_notes_tb.Text;
    string sprintid = sprint_select.SelectedValue;

string ConnectionString = WebConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
SqlConnection myConnection = new SqlConnection(ConnectionString);

myConnection.Open();

String query = "Declare @team_identity int INSERT INTO teams (team_name, status, notes) VALUES (@team_name, @status, @notes); set @team_identity = scope_identity() INSERT INTO sprints_vs_teams (sprint_id, team_id) VALUES (@sprint_id, @team_identity)";

       SqlCommand myCommand = new SqlCommand(query, myConnection);
        myCommand.Parameters.AddWithValue("@team_name", teamname);
        myCommand.Parameters.AddWithValue("@status", teamstatus);
        myCommand.Parameters.AddWithValue("@notes", teamnotes);
        myCommand.Parameters.AddWithValue("@sprint_id", sprintid);

        myCommand.ExecuteNonQuery();
        myConnection.Close();
}

我用@Sick的答案修改了我的代碼，但它似乎沒有用。 如果有人可以就我可能出錯的地方提出建議，我們將不勝感激。

Answer 1

使用SCOPE_IDENTITY

Declare @team_identity int

INSERT INTO teams (team_name, status, notes) 
                            VALUES (@team_name, @status, @notes);

set @team_identity = scope_identity()

INSERT INTO sprints_vs_teams (sprint_id, team_id)                    
                            VALUES (@sprint_id, @team_identity)"

Answer 2

如果我沒弄錯，你必須將team_identity聲明為cmd.parameter。 當然沒有傳遞進入它的參數c＃仍然期待一個

cmd.paramater.addwithvalue("@team_identity", paramaterDirection.out);

或類似的東西

Answer 3

插入一個行后， teams表中，填寫下列代碼來獲得認同的當前值和使用它插入到時sprints_vs_teams表。

SqlCommand cmd=new SqlCommand("select Ident_current('teams')",Cn);
Cn.Open();
int teamid=int.Parse(Cmd.ExecuteScalar().ToString());

希望能幫助到你