jorik041 · January 30, 2024 23:42 · Jan 30, 2024 · Jan 30, 2024
diff --git a/Mast.cs → Master.cs b/Mast.cs → Master.cs
diff --git a/Child.cs b/Child.cs
@@ -0,0 +1,5 @@
+public class Child
+{
+    public string Name;
+    public int Age;
+}
diff --git a/Code.cs b/Code.cs
@@ -0,0 +1,6 @@
+Master master = new()
+{
+    FamilyName = "Smith",
+    ValidNames = ["Jim", "Mary", "Karen"], 
+    Children = [new Child { Name = "Mick" }]
+};
diff --git a/Mast.cs b/Mast.cs
@@ -0,0 +1,7 @@
+public class Master
+{
+    public int Id { get; set; }
+    public string FamilyName { get; set; }
+    public List<string> ValidNames;
+    public List<Child> Children;
+}
diff --git a/readme.md b/readme.md
@@ -0,0 +1,32 @@
+Using [FluentValidation](https://www.nuget.org/packages/FluentValidation/11.9.0?_src=template) NuGet package, create a custom validator to validate that Master.Children contain one of the names in Master.ValidNames
+
+**Example** which goes not validate.
+
+```csharp
+internal partial class Program
+{
+    static void Main(string[] args)
+    {
+        Master master = new()
+        {
+            FamilyName = "Smith",
+            ValidNames = ["Jim", "Mary", "Karen"], 
+            Children = [new Child { Name = "Mick" }]
+        };
+
+        CustomValidator validator = new();
+        ValidationResult result = validator.Validate(master);
+
+        Console.WriteLine();
+
+        if (result.IsValid)
+        {
+            ...
+        }
+        else
+        {
+            ...
+        }
+    }
+}
+```
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