private static string Serialize(object[] pagingElements, out int pageNumber)
{
pageNumber = 0;
if (pagingElements == null || pagingElements.Length == 0)
{
return((string)null);
}
if (pagingElements.Length % 3 != 1)
{
throw new NotSupportedException("Skip token has incorrect length");
}
if (pagingElements[0] == null || !(pagingElements[0].GetType() == typeof(int)) || (int)pagingElements[0] < 0)
{
throw new NotSupportedException("Skip token has incorrect page value");
}
pageNumber = (int)pagingElements[0];
using (StringWriter stringWriter = new StringWriter((IFormatProvider)CultureInfo.InvariantCulture))
{
using (XmlWriter xmlWriter = PagingCookieHelper.CreateXmlWriter((TextWriter)stringWriter))
{
xmlWriter.WriteStartElement("cookie");
xmlWriter.WriteAttributeString("page", pageNumber.ToString((IFormatProvider)CultureInfo.InvariantCulture));
int num = 1;
if (pagingElements[1] != null && pagingElements[1].GetType() == typeof(Guid) && (pagingElements[2] != null && pagingElements[2].GetType() == typeof(string)) && (pagingElements[3] != null && pagingElements[3].GetType() == typeof(int)))
{
num = 4;
xmlWriter.WriteAttributeString("parentEntityId", pagingElements[1].ToString());
xmlWriter.WriteAttributeString("parentAttributeName", (string)pagingElements[2]);
xmlWriter.WriteAttributeString("parentEntityObjectTypeCode", pagingElements[3].ToString());
}
for (int index = num; index < pagingElements.Length; index += 3)
{
string pagingElement = (string)pagingElements[index];
ClientExceptionHelper.ThrowIfNullOrEmpty(pagingElement, "attributeName");
string empty1 = string.Empty;
string empty2 = string.Empty;
string str1 = (string)pagingElements[index + 1];
string str2 = (string)pagingElements[index + 2];
xmlWriter.WriteStartElement(pagingElement);
string localName1;
if (str1 != null)
{
localName1 = "last";
}
else
{
localName1 = "lastnull";
str1 = "1";
}
string localName2;
if (str2 != null)
{
localName2 = "first";
}
else
{
localName2 = "firstnull";
str2 = "1";
}
xmlWriter.WriteAttributeString(localName1, str1);
xmlWriter.WriteAttributeString(localName2, str2);
xmlWriter.WriteEndElement();
}
xmlWriter.WriteEndElement();
}
return(stringWriter.ToString());
}
}
