C and asp. net link database parameters in several method instance code
- 2020-07-21 07:22:29
- OfStack
#region Parameter passing method no 1 Kind of
// Parameter setting method (s) 1 A)
//SqlParameter sp = new SqlParameter("@Name", str_Name);
//SqlParameter sp2 = new SqlParameter("@Pwd", str_Pwd);
//cmd.Parameters.Add(sp);
//cmd.Parameters.Add(sp2);
#endregion
// simple 1 Use the first 1 Kind of
#region The number of parameters passed 2 methods ( Is the first 1 The omission of a species passes on a variable )
cmd.Parameters.Add(new SqlParameter("@Name", str_Name));
cmd.Parameters.Add(new SqlParameter("@Pwd", str_Pwd));
#endregion
#region The number of parameters passed 3 A method (array passing)
//SqlParameter[] sp = new SqlParameter[] { new SqlParameter("@Name", str_Name), new SqlParameter("@Pwd", str_Pwd) };
//cmd.Parameters.AddRange(sp);
#endregion
#region The number of parameters passed 4 methods (AddWithValue)
//cmd.Parameters.AddWithValue("@Name", str_Name);
//cmd.Parameters.AddWithValue("@Pwd", str_Pwd);
#endregion
// A large project 1 Use the first 5 Kind of
#region The number of parameters passed 5 methods ( With the first 1 Similarly, increase the database parameter type )
//SqlParameter sps = new SqlParameter("@Name", SqlDbType.NVarChar);
//SqlParameter sps2 = new SqlParameter("@Pwd", SqlDbType.NVarChar);
//sps.Value = str_Name;
//sps2.Value = str_Pwd;
//cmd.Parameters.Add(sps);
//cmd.Parameters.Add(sps2);
#endregion