ParameterLess construct

When I was creating my first cloud app that’s used Microsoft Azure for storage and computation purposes I came across a strange problem which wasn’t related to the Azure itself but was more related to the c# and the .net framework.
When I was writing the code I made a Class which had no parameter less construct. Objects of this class were then used in the program. Because this class was derived from Ienumerator I could actually user Foreach() on the objects of this class but to my surprise the code shown below was showing error at the highlighted line.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using Microsoft.WindowsAzure.StorageClient;
using Microsoft.WindowsAzure;
namespace WebRole1
{
public class mspDataServiceContext : TableServiceContext
{
public mspDataServiceContext(string baseAddress, StorageCredentials credentials)
: base(baseAddress, credentials)
{
}
static int c;
public IQueryable<msp> msps
{
get
{
return this.CreateQuery<msp>("msps");
}
}
static int Count()
{
return c;
}
public int AddMsp(msp m)
{
foreach (msp k in this.msps)
{
if (k.UserId == m.UserId)
return 0;
}
//for (int i = 0; i <mspDataServiceContext.Count(); i++)
//{
// if (m.UserId == msps.ElementAt(i).UserId)
// return 0;
//}
this.AddObject("msps", m);
this.SaveChanges();
c++;
return 1;//indicatiing successful addition
}
public int DeleteMsp(string UserId)
{
foreach (msp k in msps)
{
if (k.UserId == UserId)
{
this.DeleteObject(k);
this.SaveChanges();
c--;
return 1;//indicating sucessful deletion
}
}
return 0;//indicating missing entry
}
public int updateMspLocation(string UserId, double lat, double lon)
{
msp m = null;
foreach (msp k in msps)
{
if (k.UserId == UserId)
{
m = k;
this.DeleteObject(k);
this.SaveChanges();
break;
}
else return 0;
}
m.lat = lat;
m.lon = lon;
this.AddMsp(m);
this.SaveChanges();
return 1;//indicating successful updation
}
public void DeleteAll()
{
foreach (msp m in this.msps)
{
this.DeleteObject(m);
}
The error was later rectified by adding a parameter less construct in the class because the foreach() command was making a msp k in every step and there was no parameterless construct so the compiler wasn’t allowing it to be made.
link to the full project is given below