Document #15335: Make ReplaceDbContext supports multi-tenancy

docs/en/Entity-Framework-Core.md

@@ -834,7 +834,7 @@ One advantage of using an interface for a DbContext is then it will be replaceab
 
 Once you properly define and use an interface for DbContext, then any other implementation can use the following ways to replace it:
 
-**ReplaceDbContextAttribute**
+#### ReplaceDbContext Attribute
 
 ```csharp
 [ReplaceDbContext(typeof(IBookStoreDbContext))]
@@ -844,7 +844,7 @@ public class OtherDbContext : AbpDbContext<OtherDbContext>, IBookStoreDbContext
 }
 ```
 
-**ReplaceDbContext option**
+#### ReplaceDbContext Option
 
 ````csharp
 context.Services.AddAbpDbContext<OtherDbContext>(options =>
@@ -856,6 +856,22 @@ context.Services.AddAbpDbContext<OtherDbContext>(options =>
 
 In this example, `OtherDbContext` implements `IBookStoreDbContext`. This feature allows you to have multiple DbContext (one per module) on development, but single DbContext (implements all interfaces of all DbContexts) on runtime.
 
+#### Replacing with Multi-Tenancy
+
+It is also possible to replace a DbContext based on the [multi-tenancy](Multi-Tenancy.md) side. `ReplaceDbContext` attribute and  `ReplaceDbContext` method can get a `MultiTenancySides` option with a default value of `MultiTenancySides.Both`.
+
+**Example:** Replace DbContext only for tenants, using the `ReplaceDbContext` attribute
+
+````csharp
+[ReplaceDbContext(typeof(IBookStoreDbContext), MultiTenancySides.Tenant)]
+````
+
+**Example:** Replace DbContext only for the host side, using the `ReplaceDbContext` method
+
+````csharp
+options.ReplaceDbContext<IBookStoreDbContext>(MultiTenancySides.Host);
+````
+
 ### Split Queries
 
 ABP enables [split queries](https://docs.microsoft.com/en-us/ef/core/querying/single-split-queries) globally by default for better performance. You can change it as needed.