Add project files.

Beam.Dynamic/ParagraphedContentDataProvider.cs

@@ -0,0 +1,35 @@
+using HtmlAgilityPack;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Beam.Dynamic {
+    public class ParagraphedContentDataProvider : IDataProvider {
+        public Binding? Content { get; set; }
+
+        public string Get(HtmlDocument document) {
+            if (Content is null)
+                return "";
+
+            var node = Content.ResolveNode(document);
+            if (node is null)
+                return "";
+
+            StringBuilder content = new();
+            foreach(var childNode in node.ChildNodes) {
+                if (childNode.Name != "p")
+                    continue;
+                content.AppendLine(childNode.InnerText);
+            }
+
+            return content.ToString();
+        }
+
+        public HtmlNode? GetNode(HtmlDocument document) {
+            return Content?.ResolveNode(document);
+        }
+
+    }
+}