Adds app icon support to dotnet

source/Prebuild/Core/Nodes/NullableNode.cs

@@ -0,0 +1,20 @@
+using Prebuild.Core.Attributes;
+using Prebuild.Core.Utilities;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml;
+
+namespace Prebuild.Core.Nodes
+{
+    [DataNode("Nullable")]
+    public class NullableNode : DataNode
+    {
+        public override void Parse(XmlNode node)
+        {
+            base.Parse(node);
+        }
+    }
+}

source/Prebuild/Core/Nodes/ProjectNode.cs

@@ -247,8 +247,9 @@ public class ProjectNode : DataNode, IComparable
                 else if (dataNode is AuthorNode)
                     Authors.Add((AuthorNode)dataNode);
                 else if (dataNode is FilesNode) Files = (FilesNode)dataNode;
-                else if(dataNode is TextGenNode) TextGenNodes.Add((TextGenNode)dataNode);
+                else if (dataNode is TextGenNode) TextGenNodes.Add((TextGenNode)dataNode);
-                else if(dataNode is MauiNode obj) MauiSettings = obj;
+                else if (dataNode is MauiNode obj) MauiSettings = obj;
+                else if (dataNode is NullableNode) Nullable = true;
             }
         }
         finally
@@ -342,6 +343,18 @@ public class ProjectNode : DataNode, IComparable
     /// <value>The filter groups.</value>
     public string FilterGroups { get; private set; } = "";
 
+    /// <summary>
+    /// Indicates project nullable attribute
+    /// </summary>
+    public bool Nullable { get; private set; } = false;
+    public string NullableStr 
+    { 
+        get
+        {
+            return Nullable ? "enable" : "disable";
+        } 
+    }
+
     /// <summary>
     ///     Gets the project's version
     /// </summary>

source/Prebuild/Core/Targets/VSGenericTarget.cs

@@ -714,8 +714,7 @@ public abstract class VSGenericTarget : ITarget
             ps.WriteLine();
 
             ps.WriteLine("  <PropertyGroup>");
-            ps.WriteLine("    <TargetFramework>{0}</TargetFramework>",
+            ps.WriteLine($"    <TargetFramework>{project.FrameworkVersion.ToString().Replace("_", ".")}</TargetFramework>");
-                project.FrameworkVersion.ToString().Replace("_", "."));
             ps.WriteLine("    <PreserveCompilationContext>false</PreserveCompilationContext>");
             ps.WriteLine("    <OutputType>{0}</OutputType>",
                 project.Type == ProjectType.Web ? ProjectType.Library.ToString() : project.Type.ToString());
@@ -744,7 +743,15 @@ public abstract class VSGenericTarget : ITarget
                 }
             }
 
-            ps.WriteLine($"<SelfContained>{solution.Options.SelfContained}</SelfContained>");
+            if(project.Nullable)
+                ps.WriteLine($"    <Nullable>{project.NullableStr}</Nullable>");
+
+            if(project.AppIcon != "")
+            {
+
+                ps.WriteLine($"     <ApplicationIcon>{project.AppIcon}</ApplicationIcon>");
+            }
+            ps.WriteLine($"    <SelfContained>{solution.Options.SelfContained}</SelfContained>");
             if (solution.Options.UseRuntimeIdentifier)
             {
                 var RID = "unknown";