如何在命令中调用函数？

Question

我想使用“MyPlaces”功能。我应该使用什么而不是commandType.StoredProcedure

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string connStr = ConfigurationManager.ConnectionStrings["MyDbConn"].ToString();
        SqlConnection conn = new SqlConnection(connStr); 
        SqlCommand cmd = new SqlCommand("MyPlaces", conn);
        cmd.CommandType = CommandType.StoredProcedure; //This part gives me an error 
        string email = Session["oldemailuser"].ToString();
        cmd.Parameters.Add(new SqlParameter("@email", email));

        conn.Open();
        SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);

        string s = "<br />";
        while (rdr.Read())
        {
          string name = s + " " + rdr.GetString(rdr.GetOrdinal("name"))
                        + "   located in ";
          string location = rdr.GetString(rdr.GetOrdinal("location")) 
                            + "&nbsp;&nbsp";


         Label lbl_name = new Label();
         lbl_name.Text = email;
         form1.Controls.Add(lbl_name);

         Label lbl_location = new Label();
         lbl_location.Text = email;
         form1.Controls.Add(lbl_location);

     }
 }

Answer 1

希望你的sql函数名是“Myplaces”。如果是，那么用这个修改你的代码：

string email = Session["oldemailuser"].ToString();

SqlConnection conn = new SqlConnection(connStr); 
SqlCommand cmd = new SqlCommand(conn);
cmd.CommandText = "SELECT MyPlaces(@email)";
cmd.CommandType = CommandType.Text;
cmd.Parameters.Add(new SqlParameter("@email", email));
conn.Open();