Code simplification. (#5171)

* Code simplification.

Deleting a lot of empty lines and simplification of a regular expressions.

* Update adding-validation.md

aspnet/mvc/overview/getting-started/introduction/adding-validation.md

@@ -37,7 +37,7 @@ Open the *Movie.cs* file. Notice the [`System.ComponentModel.DataAnnotations`](h
 
 Now update the `Movie` class to take advantage of the built-in [`Required`](https://msdn.microsoft.com/en-us/library/system.componentmodel.dataannotations.requiredattribute.aspx), [`StringLength`](https://msdn.microsoft.com/en-us/library/system.componentmodel.dataannotations.stringlengthattribute.aspx), [RegularExpression](https://msdn.microsoft.com/en-us/library/system.componentmodel.dataannotations.regularexpressionattribute.aspx), and [`Range`](https://msdn.microsoft.com/en-us/library/system.componentmodel.dataannotations.rangeattribute.aspx) validation attributes. Replace the `Movie` class with the following:
 
-[!code-csharp[Main](adding-validation/samples/sample1.cs?highlight=8,22-24,30-31,37-38)]
+[!code-csharp[Main](adding-validation/samples/sample1.cs?highlight=5,13-15,18-19,22-23)]
 
 The [`StringLength`](https://msdn.microsoft.com/en-us/library/system.componentmodel.dataannotations.stringlengthattribute.aspx) attribute sets the maximum length of the string, and it sets this limitation on the database, therefore the database schema will change. Right click on the **Movies** table in **Server explorer** and click **Open Table Definition**:
 

aspnet/mvc/overview/getting-started/introduction/adding-validation/samples/sample1.cs

@@ -2,39 +2,24 @@ public class Movie
 {
     public int ID { get; set; }
 
-
-
-
     [StringLength(60, MinimumLength = 3)]
     public string Title { get; set; }
 
-
-
-
     [Display(Name = "Release Date")]
     [DataType(DataType.Date)]
     [DisplayFormat(DataFormatString = "{0:yyyy-MM-dd}", ApplyFormatInEditMode = true)]
     public DateTime ReleaseDate { get; set; }
   
-
-
-
-    [RegularExpression(@"^[A-Z]+[a-zA-Z''-'\s]*$")]
+    [RegularExpression(@"^[A-Z]+[a-zA-Z'\s]*$")]
     [Required]
     [StringLength(30)]
     public string Genre { get; set; }
 
-
-
-
     [Range(1, 100)]
     [DataType(DataType.Currency)]
     public decimal Price { get; set; }
 
-
-
-
-    [RegularExpression(@"^[A-Z]+[a-zA-Z''-'\s]*$")]
+    [RegularExpression(@"^[A-Z]+[a-zA-Z'\s]*$")]
     [StringLength(5)]
     public string Rating { get; set; }
 }