Fix AbpDeskDbConfigurer

src/AbpDesk/AbpDesk.EntityFrameworkCore/AbpDesk/EntityFrameworkCore/AbpDeskDbConfigurer.cs

@@ -18,7 +18,14 @@ namespace AbpDesk.EntityFrameworkCore
                 //Configures all dbcontextes to use Sql Server with calculated connection string
                 options.Configure(context =>
                 {
-                    context.DbContextOptions.UseSqlServer(context.ConnectionString);
+                    if (context.ExistingConnection != null)
+                    {
+                        context.DbContextOptions.UseSqlServer(context.ExistingConnection);
+                    }
+                    else
+                    {
+                        context.DbContextOptions.UseSqlServer(context.ConnectionString);
+                    }
                 });
             });
         }

src/Volo.Abp.EntityFrameworkCore/Volo/Abp/EntityFrameworkCore/DependencyInjection/AbpDbContextConfigurationContext.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Data.Common;
 using JetBrains.Annotations;
 using Microsoft.EntityFrameworkCore;
 using Volo.Abp.DependencyInjection;
@@ -13,13 +14,20 @@ namespace Volo.Abp.EntityFrameworkCore.DependencyInjection
 
         public string ConnectionStringName { get; }
 
+        public DbConnection ExistingConnection { get; }
+
         public DbContextOptionsBuilder DbContextOptions { get; protected set; }
 
-        public AbpDbContextConfigurationContext(string connectionString, [CanBeNull] string connectionStringName, [NotNull] IServiceProvider serviceProvider)
+        public AbpDbContextConfigurationContext(
+            [NotNull] string connectionString,
+            [NotNull] IServiceProvider serviceProvider,
+            [CanBeNull] string connectionStringName,
+            [CanBeNull]DbConnection existingConnection)
         {
             ConnectionString = connectionString;
-            ConnectionStringName = connectionStringName;
             ServiceProvider = serviceProvider;
+            ConnectionStringName = connectionStringName;
+            ExistingConnection = existingConnection;
 
             DbContextOptions = new DbContextOptionsBuilder();
         }
@@ -30,8 +38,16 @@ namespace Volo.Abp.EntityFrameworkCore.DependencyInjection
     {
         public new DbContextOptionsBuilder<TDbContext> DbContextOptions => (DbContextOptionsBuilder<TDbContext>)base.DbContextOptions;
 
-        public AbpDbContextConfigurationContext(string connectionString, [CanBeNull] string connectionStringName, [NotNull] IServiceProvider serviceProvider)
-            : base(connectionString, connectionStringName, serviceProvider)
+        public AbpDbContextConfigurationContext(
+            string connectionString,
+            [NotNull] IServiceProvider serviceProvider,
+            [CanBeNull] string connectionStringName,
+            [CanBeNull] DbConnection existingConnection)
+            : base(
+                  connectionString, 
+                  serviceProvider, 
+                  connectionStringName, 
+                  existingConnection)
         {
             base.DbContextOptions = new DbContextOptionsBuilder<TDbContext>();
         }

src/Volo.Abp.EntityFrameworkCore/Volo/Abp/EntityFrameworkCore/DependencyInjection/DbContextOptionsFactory.cs

@@ -16,8 +16,9 @@ namespace Volo.Abp.EntityFrameworkCore.DependencyInjection
 
             var context = new AbpDbContextConfigurationContext<TDbContext>(
                 creationContext.ConnectionString,
+                serviceProvider,
                 creationContext.ConnectionStringName,
-                serviceProvider
+                creationContext.ExistingConnection
             );
 
             var dbContextOptions = GetDbContextOptions<TDbContext>(serviceProvider);