Implement page for listing screens.

Cicm.Database/Models/Screen.cs

@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 
@@ -7,14 +8,18 @@ namespace Cicm.Database.Models
     public class Screen : BaseModel<int>
     {
         [Range(1, 131072)]
+        [DisplayName("Width (mm)")]
         public double? Width { get; set; }
         [Range(1, 131072)]
+        [DisplayName("Height (mm)")]
         public double? Height { get; set; }
         [Required]
+        [DisplayName("Diagonal (inches)")]
         public double Diagonal { get; set; }
         [Required]
         public virtual Resolution NativeResolution { get; set; }
         [Range(2, 281474976710656)]
+        [DisplayName("Effective colors")]
         public long? EffectiveColors { get; set; }
         [Required]
         public string Type { get; set; }
@@ -22,6 +27,17 @@ namespace Cicm.Database.Models
         [NotMapped]
         public long? Colors => EffectiveColors ?? NativeResolution.Colors;
 
+        [NotMapped]
+        public string Size
+        {
+            get
+            {
+                if(Width != null && Height != null) return $"{Width}x{Height} mm";
+
+                return "Unknown";
+            }
+        }
+
         public virtual ICollection<ResolutionsByScreen> Resolutions       { get; set; }
         public virtual ICollection<ScreensByMachine>    ScreensByMachines { get; set; }
     }