Due to the discontinuation of Google Podcasts, I am writing my own Podcast App for Android. I chose C# MAUI because I am a C# Developer, and I have used Xamarin (become a part of MAUI now) for years.
My first problem is the Podcast App; I need to load the RSS (XML) via HTTP. That is so easy. Same as other C# programs. Also, you can use to load any JSON information in different use case

Code

I found that is anulgarjs and ASP.net Core are working very well together!
In the client side:

var Item = {};
Item.Id = 1;
Item.Name = "Test";
$http.post('/Items/Create', Item);

In the server side controller, then the JSON object can automatic parsed.
You just need to use [FromBody], I found without that, the parameter object will be always null. I think you need to tell the MVC, where is the JSON content:

[HttpPost]
[Authorize]
public async Task Create([FromBody] Item item)
That's easy and clean!

I started to use ASP.Net Core in our web development. The first challenge I faced is about the nested View Model.
I have not used much in nested view model in the previous of MVC,
I got the View Models like this:

Code

If I wish to do the binding in the razor html

You have to add the bind in the controller

Code

mc_code_odd">
[Bind("FirstName,LastName")]
public Customer{
   public string FirstName {get;set;}
   public string LastName {get;set;}
}

Recently, I built a simple validation framework which can work with WPF. I found I can use class attribute and reflection to achieve this purpose.
Firstly, I define a Required Attribute to see whether the property requires a value

Code

Then I add IsValid method in the class, it will use the reflect to get all properties in this class. Then it will check whether the property has "required=true", if that is the case, it will check whether the property has value, if not, it will use an error.

public class PersonModel
	{
		[Required(true)]
		public string Name {get;set;}
		public IList IsValid()
		{
			IList ret = new List();
			foreach (var prop in this.GetType().GetProperties())
			{
				foreach(Attribute attr1 in  prop.GetCustomAttributes(typeof(RequiredAttribute),true)){
					RequiredAttribute attr = (RequiredAttribute) attr1;
					if (attr != null) {
						if (attr.Required)
						{
							if (string.IsNullOrEmpty(Convert.ToString(prop.GetValue(this, null)))) {
								ret.Add(string.Format("{0} is required",prop.Name));
							}
							
						}
					}
				}

			}
			return ret;
		}
	}

is the best practice. I cannot think another way can do it easier.
Please click here to download the example code.

I am working on the redevelopment of AdvGenCMS which is a simple .Net CMS. It built by myself and a couple of intent university students. I have not updated for a few years. These few days, I am working on redevelopment it. Currently, I am working on the authentication framework.I am upgrading that from ASP.net Membership system to ASP.net Identity. In last version, that is using a custom SQL Provider. I found that is more workable with a similar SQL provider. But I need to change the UserStore and my own user class need to be implement IUser interface.
public partial class AdvUser : IAdvUser, IUser