asp. IDataParameter in net calls the implementation method of the stored procedure

This paper illustrates the implementation method of IDataParameter calling stored procedures in asp.net, which is a very practical skill in asp.net database programming. Share to everybody for everybody reference.

The specific implementation method is as follows:

public string GenerateExamePaper(string paperType, string driverID, string MacAddr)
{
  int i;
  IDataParameter[] iData = new SqlParameter[4];
  iData[0] = new SqlParameter("@paperType", paperType);
  iData[1] = new SqlParameter("@driverID", driverID);
  iData[2] = new SqlParameter("@MacAddr", MacAddr);
  iData[3] = new SqlParameter("@sReturn", SqlDbType.Char, 50, ParameterDirection.Output, false, 0, 0, string.Empty, DataRowVersion.Default,null);
  string aaa = "";
  i= DbHelperSQL.RunProcedureParOut("Pro_GenerateExamePaper", iData, out aaa).ToString();

  return aaa;
}

/// <summary>
///  Executes the stored procedure, returning the number of affected rows  
/// </summary>
/// <param name="storedProcName"> Stored procedure name </param>
/// <param name="parameters"> Stored procedure parameters </param>
/// <param name="rowsAffected"> The number of rows affected </param>

/// <param name="rowsAffected"> return output value </param>

/// <returns></returns>
public static int RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected,out str)
{
  using (SqlConnection connection = new SqlConnection(connectionString))
  {
 int result;
 connection.Open();
 SqlCommand command = BuildIntCommand(connection, storedProcName, parameters);
 rowsAffected = command.ExecuteNonQuery();
 result = (int)command.Parameters["ReturnValue"].Value;
    str= (int)command.Parameters["@sReturn"].Value;
 return result;
  }
}

I believe that this article described to everyone asp.net program design has a definite reference value.