Help with ArrayList as returned argument

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Help with ArrayList as returned argument

 
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  #1
Dec 1st, 2007
I have this ArrayList that consist of list of structure and I would like to use the content of the ArrayList as the return type for the function bellow. Can anyone help please.

ASP.NET Syntax (Toggle Plain Text) 
  1. public struct DeviceSchedules
  2.         {
  3.             public string StartDate;
  4.             public string EndDate;
  5.             public string Interval;
  6.             public string DeviceTimeZone;
  7.             public string GLRID;
  8.             public string TrackUID;
  9.         }
  10.  
  11.         [WebMethod()]
  12.         public DeviceSchedules theSchedules()
  13.         {
  14.             ArrayList ZoneArray = new ArrayList();
  15.             ZoneArray.Add("PST");
  16.             ZoneArray.Add("MST");
  17.             ZoneArray.Add("CST");
  18.             ZoneArray.Add("EST");
  19.  
  20.             DeviceSchedules Schedules = new DeviceSchedules();
  21.             ArrayList GroupSchedule = new ArrayList();
  22.  
  23.             Int16 Zone = 1;
  24.             DateTime Begining = DateTime.Now.AddHours(Zone);
  25.             DateTime End = DateTime.Now.AddHours(Zone);
  26.             //int Zone = 3;
  27.             Int32 TrackID = 9999;
  28.             Int32 ScheduleID = 400;
  29.             int Frequency = 40;
  30.             for (int index = 0; index <= 5; index++)
  31.             {
  32.                 Schedules.StartDate = Convert.ToString(Begining);
  33.                 Schedules.EndDate = Convert.ToString(End);
  34.                 Schedules.Interval = Convert.ToString(Frequency);
  35.                 Schedules.DeviceTimeZone = Convert.ToString(ZoneArray[Zone]);
  36.                 Schedules.GLRID = Convert.ToString(ScheduleID);
  37.                 Schedules.TrackUID = Convert.ToString(TrackID);
  38.                 GroupSchedule.Add(Schedules);
  39.             }
  40.             return (GroupSchedule);
  41.         }
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Re: Help with ArrayList as returned argument

 
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  #2
Dec 2nd, 2007
you have to declare the function as an array/string. Something like this would be:

public string[] functionName()
{
}

enjoy
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Re: Help with ArrayList as returned argument

 
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  #3
Dec 3rd, 2007
The suggested implementation did not work. I have also tried some other method to read the list and they don't work either.
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Re: Help with ArrayList as returned argument

 
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  #4
Dec 3rd, 2007
have you tried to see if the array contains information?
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Re: Help with ArrayList as returned argument

 
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  #5
Dec 3rd, 2007
yes the array have the information. I've also test for the size of the array.
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Re: Help with ArrayList as returned argument

 
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  #6
Dec 3rd, 2007
The correct implementation to the above question is as follow
ASP.NET Syntax (Toggle Plain Text) 
  1. public struct DeviceSchedules
  2.         {
  3.             public string StartDate;
  4.             public string EndDate;
  5.             public string Interval;
  6.             public string DeviceTimeZone;
  7.             public string GLRID;
  8.             public string TrackUID;
  9.         }
  10.  
  11.         [WebMethod()]
  12.         public DeviceSchedules[] theSchedules()
  13.         {
  14.             ArrayList ZoneArray = new ArrayList();
  15.             ZoneArray.Add("PST");
  16.             ZoneArray.Add("MST");
  17.             ZoneArray.Add("CST");
  18.             ZoneArray.Add("EST");
  19.  
  20.             DeviceSchedules Schedules = new DeviceSchedules();
  21.             ArrayList GroupSchedule = new ArrayList();
  22.  
  23.             Int16 Zone = 1;
  24.             DateTime Begining = DateTime.Now.AddHours(Zone);
  25.             DateTime End = DateTime.Now.AddHours(Zone);
  26.             //int Zone = 3;
  27.             Int32 TrackID = 9999;
  28.             Int32 ScheduleID = 400;
  29.             int Frequency = 40;
  30.             for (int index = 0; index <= 5; index++)
  31.             {
  32.                 Schedules.StartDate = Convert.ToString(Begining);
  33.                 Schedules.EndDate = Convert.ToString(End);
  34.                 Schedules.Interval = Convert.ToString(Frequency);
  35.                 Schedules.DeviceTimeZone = Convert.ToString(ZoneArray[Zone]);
  36.                 Schedules.GLRID = Convert.ToString(ScheduleID);
  37.                 Schedules.TrackUID = Convert.ToString(TrackID);
  38.                 GroupSchedule.Add(Schedules);
  39.             }
  40.             return ((DeviceSchedules[])GroupSchedule.ToArray(typeOf(DeviceSchedule)));
  41.         }

This is kind of "?!@#$%%^&*(@"...
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Re: Help with ArrayList as returned argument

 
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  #7
Dec 4th, 2007
yeah.. that's odd. but if it works.. however, i am surprised that my solution didn't work for you! I mean, you declared at the start, instead of formatting at the end. Made sense to me.
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Re: Help with ArrayList as returned argument

 
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  #8
Dec 4th, 2007
I am still trying to understand why the latter works. I agree with your suggestion and it should have worked; But I guessed there is a special convention about ArrayList we must understand. Information like that doesn't exist in books. I had to dig through the MSDN to get the aforementioned implementation.
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