initial commit

Resources/3rd Party/Microsoft.Extensions.Logging.Log4Net.AspNetCore/Appenders/IAppenderServiceProvider.cs

@@ -0,0 +1,8 @@
+using System;
+
+namespace log4net.Appender;
+
+internal interface IAppenderServiceProvider
+{
+    IServiceProvider ServiceProvider { set; }
+}

Resources/3rd Party/Microsoft.Extensions.Logging.Log4Net.AspNetCore/Appenders/ServiceAppenderSkeleton.cs

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+using System;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace log4net.Appender;
+
+public abstract class ServiceAppenderSkeleton : AppenderSkeleton, IAppenderServiceProvider, IDisposable
+{
+    private IServiceProvider _serviceProvider;
+    IServiceProvider IAppenderServiceProvider.ServiceProvider { set => _serviceProvider = value; }
+
+    protected T ResolveService<T>() where T : class
+    {
+        if (_serviceProvider == null)
+            return default;
+
+        return _serviceProvider.GetService<T>();
+    }
+
+    public void Dispose() => _serviceProvider = null;
+}