HtmlAgilityPack - Remove child nodes but retain inner text for the main node without XPath

You can create extension method for HtmlNode

public static class HtmlHelper
{
    public static string InnerText(this HtmlNode node)
    {
        var sb = new StringBuilder();
        foreach (var x in node.ChildNodes)
        {
            if (x.NodeType == HtmlNodeType.Text)
                sb.Append(x.InnerText);

            if (x.NodeType == HtmlNodeType.Element && x.Name == "br")
                sb.AppendLine();
        }

        return sb.ToString();
    }
}

just find the node and call node.InnerText()