private PagingResult(PagingParams pagingParams, int recordCount, int totalRecordCount)
{
if (pagingParams == null)
{
throw new ArgumentNullException("pagingParams");
}
_pagingParams = pagingParams;
int pageNumber = _pagingParams.PageNumber;
int pageSize = _pagingParams.PageSize;
if (totalRecordCount < 1)
{
throw new ArgumentOutOfRangeException("totalRecordCount", totalRecordCount, "Argument must be greater than zero.");
}
if (recordCount < 1)
{
throw new ArgumentOutOfRangeException("recordCount", recordCount, "Argument must be greater than or equal to zero.");
}
if (recordCount > pageSize)
{
throw new ArgumentOutOfRangeException("recordCount", recordCount, "Argument must be less than or equal to page size.");
}
if (recordCount > totalRecordCount)
{
throw new ArgumentOutOfRangeException("recordCount", "Argument cannot be greater than 'totalRecordCount'.");
}
_recordCount = recordCount;
_totalRecordCount = totalRecordCount;
_firstRecordNum = ((pageNumber - 1) * pageSize) + 1;
_lastRecordNum = _firstRecordNum + _recordCount - 1;
if (_firstRecordNum > _totalRecordCount)
{
throw new ApplicationException("'_firstRecordNum' cannot be greater than 'totalRecordCount'.");
}
if (_lastRecordNum > _totalRecordCount)
{
throw new ApplicationException("'_lastRecordNum' cannot be greater than 'totalRecordCount'.");
}
}
public static PagingResult Create(PagingParams pagingParams, int recordCount, int totalRecordCount)
{
Contract.Requires(recordCount >= 0);
Contract.Requires(totalRecordCount >= 0);
if (totalRecordCount < 1)
{
return(new PagingResult(pagingParams));
}
else
{
return(new PagingResult(pagingParams, recordCount, totalRecordCount));
}
}
private PagingResult(PagingParams pagingParams)
{
if (pagingParams == null)
{
throw new ArgumentNullException("pagingParams");
}
_pagingParams = pagingParams;
_recordCount = 0;
_totalRecordCount = 0;
_firstRecordNum = 0;
_lastRecordNum = 0;
}
public bool Equals(PagingResult other)
{
if (Object.ReferenceEquals(other, null))
{
return(false);
}
if (Object.ReferenceEquals(other, this))
{
return(true);
}
if (!PagingParams.Equals(other.PagingParams))
{
return(false);
}
if (RecordCount != other.RecordCount)
{
return(false);
}
if (TotalRecordCount != other.TotalRecordCount)
{
return(false);
}
if (FirstRecordNum != other.FirstRecordNum)
{
return(false);
}
if (LastRecordNum != other.LastRecordNum)
{
return(false);
}
return(true);
}
