Enable FrameworkElements reflection using rd.xml file

BitSmithy 1,751

Hello,

Reading Microsoft docs I found informations about rd.xml file.

Can I set in that file that metadata from FrameworkElements or Shapes wont be removed during compilation? And I will be able to fully using reflection after release type compilation.

If yes, please type how to do this.

Junjie Zhu - MSFT 15,056 Reputation points Microsoft Vendor

2024-04-10T08:24:20.4933333+00:00

Hi @BitSmithy ,

Generally, it is not recommended to use reflection. Could you please tell me your specific scenario? What properties do you want to get through reflection?
BitSmithy 1,751 Reputation points

2024-04-15T11:30:58.0166667+00:00

Asking this question I have not any scenario. I am scouting about reflection in UWP because it supports reusability, and often shortens code.

I know that some metadata are cat in release run mode and reflection works only partly. But scouting in Microsoft docs I found promising info that I can control this behavior using rd.xml file. I want to confirm if I properly understood these docs or I misoonderstood them.
Junjie Zhu - MSFT 15,056 Reputation points Microsoft Vendor

2024-04-16T09:18:59.7066667+00:00

Your point is correct. In specific use, I think it depends on which properties you need to use. General properties can be obtained by using reflection.
BitSmithy 1,751 Reputation points

2024-04-18T12:12:03.1566667+00:00
But please tell me what line i should enter into rd.xml file to force comiler to not erase any reflection metadata from

all FrameworkElements,

only from Shapes

only from TextBox.

<Directives xmlns="http://schemas.microsoft.com/netfx/2013/01/metadata"> <Application> <Namespace Name="?????" Serialize="???" /> something other? </Application> </Directives>

If there is possible to protect from removing only pointed property, please tel how to force compiler to not remove Text and RenderTransform properties reflection metadata from TextBox.

Info about rd.xml file I found here:

https://learn.microsoft.com/en-us/windows/uwp/dotnet-native/runtime-directives-rd-xml-configuration-file-reference

Junjie Zhu - MSFT 15,056 Microsoft Vendor

Hi @BitSmithy ,

Plese check this.

<?xml version="1.0" encoding="utf-8"?>
<Directives xmlns="http://schemas.microsoft.com/netfx/2013/01/metadata">
  <Application>
    <Namespace Name="Windows.UI.Xaml.FrameworkElement" Dynamic="Required All" />
    <Namespace Name="Windows.UI.Xaml.Controls" Dynamic="Required All">
      <Type Name="TextBox"   Activate="All" >
        <Property Name="Text" Dynamic="Required" />
        <Property Name="RenderTransform" Dynamic="Required" />      
      </Type>
    </Namespace>
  </Application>
</Directives>

Roy Li - MSFT 31,886 Reputation points Microsoft Vendor

2024-04-25T02:42:17.35+00:00

Haven't heard from you for a while. Does junjie's answer help you solve the issue?
BitSmithy 1,751 Reputation points

2024-04-30T10:32:10.9533333+00:00

I am testing, It can last a while.

1 answer

Junjie Zhu - MSFT 15,056 Reputation points Microsoft Vendor

2024-04-12T08:55:36.8733333+00:00
Hi @BitSmithy ,

Welcome to Microsoft Q&A!

You can use System.Reflection.TypeInfo to get metadata from FrameworkElement or Shape.

var t = typeof(FrameworkElement).GetTypeInfo();

TextBlock obj = new TextBlock(); Type myObjectType = obj.GetType(); TypeInfo typeInfo = myObjectType.GetTypeInfo(); // Get declared properties var declaredProperties = typeInfo.DeclaredProperties;

Thank you.

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