//Virtural List Implementation
public async Task <Tuple <IEnumerable <PackageType>, int> > LoadRange(int startIndex, int count, string exp, Dictionary <string, string> navExp, IEnumerable <string> includeLst = null)
{
var overallCount = 0;
if (System.ComponentModel.LicenseManager.UsageMode == LicenseUsageMode.Designtime || exp == null || exp == "None")
{
return(new Tuple <IEnumerable <PackageType>, int>(new List <PackageType>().AsEnumerable(), overallCount));
}
try
{
using (var t = new PackageTypeClient())
{
IEnumerable <DTO.PackageType> res = null;
res = await t.LoadRangeNav(startIndex, count, exp, navExp, includeLst).ConfigureAwait(continueOnCapturedContext: false);
overallCount = await t.CountNav(exp, navExp).ConfigureAwait(continueOnCapturedContext: false);
if (res != null)
{
return(new Tuple <IEnumerable <PackageType>, int>(res.Select(x => new PackageType(x)).AsEnumerable(), overallCount));
}
else
{
return(null);
}
}
}
catch (FaultException <ValidationFault> e)
{
throw new Exception(e.Detail.Message, e.InnerException);
}
catch (Exception)
{
Debugger.Break();
throw;
}
}