Add a sample showing how to configure scale and precision

Fixes #527
dotnet · Oct 18, 2017 · 8f90598 · 8f90598
1 parent 4c6e689
commit 8f90598
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diff --git a/entity-framework/core/modeling/relational/data-types.md b/entity-framework/core/modeling/relational/data-types.md
@@ -25,20 +25,14 @@ For example, SQL Server uses `datetime2(7)` for `DateTime` properties, and `nvar
 
 ## Data Annotations
 
-You can use Data Annotations to specify an exact data type for the column.
-
-[!code-csharp[Main](../../../../samples/core/Modeling/DataAnnotations/Samples/Relational/DataType.cs?name=Entities&highlight=4)]
-``` csharp
-public class Blog
-{
-    public int BlogId { get; set; }
-    [Column(TypeName = "varchar(200)")]
-    public string Url { get; set; }
-}
-```
+You can use Data Annotations to specify an exact data type for a column.
+
+For example the following code configures `Url` as a non-unicode string with maximum length of `200` and `Rating` as decimal with precision of `5` and scale of `2`.
+
+[!code-csharp[Main](../../../../samples/core/Modeling/DataAnnotations/Samples/Relational/DataType.cs?name=Entities&highlight=4,6)]
 
 ## Fluent API
 
-You can use the Fluent API to specify an exact data type for the column.
+You can also use the Fluent API to specify the same data types for the columns.
 
-[!code-csharp[Main](../../../../samples/core/Modeling/FluentAPI/Samples/Relational/DataType.cs?name=Model&highlight=7,8,9)]
+[!code-csharp[Main](../../../../samples/core/Modeling/FluentAPI/Samples/Relational/DataType.cs?name=Model&highlight=9-10)]
diff --git a/samples/core/Modeling/DataAnnotations/Samples/Relational/DataType.cs b/samples/core/Modeling/DataAnnotations/Samples/Relational/DataType.cs
@@ -1,4 +1,4 @@
-using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore;
 using System.ComponentModel.DataAnnotations.Schema;
 
 namespace EFModeling.Configuring.DataAnnotations.Samples.Relational.DataType
@@ -14,6 +14,8 @@ public class Blog
         public int BlogId { get; set; }
         [Column(TypeName = "varchar(200)")]
         public string Url { get; set; }
+        [Column(TypeName = "decimal(5, 2)")]
+        public decimal Rating { get; set; }
     }
     #endregion
 }
diff --git a/samples/core/Modeling/FluentAPI/Samples/Relational/DataType.cs b/samples/core/Modeling/FluentAPI/Samples/Relational/DataType.cs
@@ -1,4 +1,4 @@
-using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore;
 
 namespace EFModeling.Configuring.FluentAPI.Samples.Relational.DataType
 {
@@ -9,16 +9,19 @@ class MyContext : DbContext
 
         protected override void OnModelCreating(ModelBuilder modelBuilder)
         {
-            modelBuilder.Entity<Blog>()
-                .Property(b => b.Url)
-                .HasColumnType("varchar(200)");
+            modelBuilder.Entity<Blog>(eb =>
+            {
+                eb.Property(b => b.Url).HasColumnType("varchar(200)");
+                eb.Property(b => b.Rating).HasColumnType("decimal(5, 2)");
+            });
         }
     }
 
     public class Blog
     {
         public int BlogId { get; set; }
         public string Url { get; set; }
+        public decimal Rating { get; set; }
     }
     #endregion
 }