[#15] MailWindow: Add Rundschreiben-Funktion

Elwig/Models/Entities/Member.cs

@@ -145,7 +145,10 @@ namespace Elwig.Models.Entities {
         public virtual PostalDest PostalDest { get; private set; }
 
         [ForeignKey("DefaultKgNr")]
-        public virtual AT_Kg? DefaultKg { get; private set; }
+        public virtual WbKg? DefaultWbKg { get; private set; }
+
+        [NotMapped]
+        public AT_Kg? DefaultKg => DefaultWbKg?.AtKg;
 
         [ForeignKey("ZwstId")]
         public virtual Branch? Branch { get; private set; }

Elwig/Models/Entities/WbKg.cs

@@ -20,6 +20,9 @@ namespace Elwig.Models.Entities {
         [InverseProperty("Kg")]
         public virtual ISet<WbRd> Rds { get; private set; }
 
+        [InverseProperty("DefaultWbKg")]
+        public virtual ISet<Member> Members { get; private set; }
+
         [NotMapped]
         public WbGem Gem => AtKg.Gem.WbGem;