Change from Reflection to TypeDescriptors

[Eilon]

Change from Reflection to TypeDescriptors

[Eilon]

Examples where this is problematic right now:

1. BWFC DataBinder uses Reflection: https://github.com/FritzAndFriends/BlazorWebFormsComponents/blob/dev/src/BlazorWebFormsComponents/DataBinder.cs#L89-L90
   • WebForms DataBinder uses TypeDesciptor: https://github.com/microsoft/referencesource/blob/master/System.Web/UI/DataBinder.cs#L155
2. BWFC uses Reflection.Emit to mimic much of what ICustomTypeDescriptor does: https://github.com/FritzAndFriends/BlazorWebFormsComponents/blob/d1b9dfecd4ae335458ca0b42f7c0b88162aa8a4a/src/BlazorWebFormsComponents/Extensions/DataTableExtensions.cs
   • But if it used TypeDescriptor, this shouldn't be necessary.
3. BWFC GridView generates columns with Reflection:

   BlazorWebFormsComponents/src/BlazorWebFormsComponents/GridViewColumnGenerator.cs

   Line 22 in d1b9dfe

   var propertiesInfo = type.GetProperties(BindingFlags.Instance | BindingFlags.Public);

   • Web Forms GridView (very indirectly) goes through TypeDescriptor

[Eilon]

I already have a work in progress on this that I can share soon. I think it simplifies much code.

[Eilon]

This also avoids the design-time compiler error The typeof operator cannot be used on the dynamic type:

Because now you use ItemType="object" instead of ItemType="dynamic".