builder pattern

DesignPatternGuru/Builder/Builders/ConcreteBuilder.cs

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+using Builder.Products;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Builder.Builder
+{
+	internal class ConcreteBuilder : IBuilder
+	{
+		private Product _product = new Product();
+
+		public ConcreteBuilder()
+		{
+			Reset();
+		}
+
+		public void Reset()
+		{
+			_product = new Product();
+		}
+
+		public void BuildPartA()
+		{
+			_product.Add("PartA1");
+		}
+
+		public void BuildPartB()
+		{
+			_product.Add("PartB1");
+		}
+
+		public void BuildPartC()
+		{
+			_product.Add("PartC1");
+		}
+
+		public Product GetProduct()
+		{
+			Product product = _product;
+			Reset();
+
+			return product;
+		}
+	}
+}