At first you said you wanted to find a div with the class name XYZ, so why are you looking at webBrowser1.Documnet.Links? First find the Div, then go to the links inside it.
HtmlDocument doc = webBrowser.Document;
HtmlElementCollection col = doc.GetElementsByTagName("div");
foreach (HtmlElement element in col)
{
string cls = element.GetAttribute("className");
if (String.IsNullOrEmpty(cls) || !cls.Equals("XYZ"))
continue;
HtmlElementCollection childDivs = element.Children.GetElementsByName("ABC");
foreach (HtmlElement childElement in childDivs)
{
}
}
"className" "class", . "" . MSDN - SetAttribute, GetAttribute. .