当 ID 自动递增时，如何在 Visual Studio 中将其他值插入到数据库中

Question

Userid is auto incremented value and giving default as its value doesn't work

string inse = @"insert into registration (userid, firstname, lastname, day, 
                                          month, year, address, city, pincode, 
                                          state, country, phoneno, emailaddress) 
                values  (DEFAULT, @firstname, @lastname, @day, 
                         @month, @year, @address, @city, @pincode,
                         @state, @country, @phoneno, @emailaddress)";

SqlCommand cmd = new SqlCommand(inse, con);
cmd.Parameters.AddWithValue("@firstname", txtfname.Text);
cmd.Parameters.AddWithValue("@lastname", txtlname.Text);
.. 

etc

Answer 1

Just don't add it at all in the query, if it's auto-incremented then the database will handle the ID.

Query that should work:

string inse = @"insert into registration(firstname,lastname,day,month,year,
               address,city,pincode,state,country,phoneno,emailaddress) 
               values  
               (@firstname,@lastname,@day,@month,@year,@address,@city,@pincode,
               @state,@country,@phoneno,@emailaddress)";