Programmatically added SummaryLinkWebPart doesn't display Links - sharepoint-2007

Question

I am using below code to Add SummaryLinkWebPart to a Page and also adding few links to that wehbpart. I can see the webpart now on the page but it doesn't have any links inside it. Does anyone know what is wrong with the code?
var wpm = web.GetLimitedWebPartManager("Pages/default.aspx", PersonalizationScope.Shared);
SummaryLinkWebPart slwp = new SummaryLinkWebPart();
for (int counter = 0; counter < list.ItemCount; counter++)
{
urlField = list.Items[counter]["URL"].ToString().Split(',');
SummaryLink link = new SummaryLink(urlField[1].Trim());
slwp.SummaryLinkValue.SummaryLinks.Add(link);
slwp.SummaryLinkValue.SummaryLinks[counter].OpenInNewWindow = true;
slwp.SummaryLinkValue.SummaryLinks[counter].LinkUrl = urlField[0].Trim();
slwp.SummaryLinkValue.SummaryLinks[counter].Description = urlField[1];
slwp.Style = "Image on left";
Console.WriteLine(link.LinkUrl + link.Title);
}
wpm.AddWebPart(slwp, lvwp.ZoneID, slwp.ZoneIndex + 1);

Answer 1

Hmm this seems to be the hack but the only thing that solves this issue is reassigning the SummaryLinkValue Property back again its value.
slwp.SummaryLinkValue = slwp.SummaryLinkValue;

Answer 2

use
SPLimitedWebPartManager wpManager = page.GetLimitedWebPartManager(System.Web.UI.WebControls.WebParts.PersonalizationScope.Shared);
then when done call page.Update(). something like this
SPFile page = web.GetFile(string.Format("Pages/{0}", this.FileName.Replace("html", "aspx")));
SPLimitedWebPartManager wpManager = page.GetLimitedWebPartManager(System.Web.UI.WebControls.WebParts.PersonalizationScope.Shared);
SummaryLinkWebPart webpart = new SummaryLinkWebPart();
if (!string.IsNullOrEmpty(RelatedTopic1))
webpart.SummaryLinkValue.SummaryLinks.Add(GetSummaryLink(web, pages, RelatedTopic1));
if (!string.IsNullOrEmpty(RelatedTopic2))
webpart.SummaryLinkValue.SummaryLinks.Add(GetSummaryLink(web, pages, RelatedTopic2));
if (!string.IsNullOrEmpty(RelatedTopic3))
webpart.SummaryLinkValue.SummaryLinks.Add(GetSummaryLink(web, pages, RelatedTopic3));
if (!string.IsNullOrEmpty(RelatedTopic4))
webpart.SummaryLinkValue.SummaryLinks.Add(GetSummaryLink(web, pages, RelatedTopic4));
if (webpart.SummaryLinkValue.SummaryLinks.Count > 0)
{
wpManager.AddWebPart(webpart, "BottomPanel", 0);
page.Update();
}