Add project files.

Singer_Hexdive/ApplicationDbContext.cs

@@ -0,0 +1,30 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Design;
+using Microsoft.Extensions.Configuration;
+using System.IO;
+
+namespace Singer_Hexdive
+{
+    public class ApplicationDbContext : DbContext
+    {
+        public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options) : base(options) { }
+
+    }
+
+    public class ApplicationDbContextFactory : IDesignTimeDbContextFactory<ApplicationDbContext>
+    {
+        public ApplicationDbContext CreateDbContext(string[] args)
+        {
+            var config = new ConfigurationBuilder()
+                .SetBasePath(Directory.GetCurrentDirectory())
+                .AddJsonFile("appsettings.json", optional: false)
+                .Build();
+
+            var optionsBuilder = new DbContextOptionsBuilder<ApplicationDbContext>();
+            var connectionString = config.GetConnectionString("DefaultConnection");
+            optionsBuilder.UseMySql(connectionString, ServerVersion.AutoDetect(connectionString));
+
+            return new ApplicationDbContext(optionsBuilder.Options);
+        }
+    }
+}