重构项目，将项目拆分（临时提交）

DMS.Infrastructure/Data/DbContext.cs

@@ -0,0 +1,25 @@
+using DMS.Config;
+using SqlSugar;
+
+namespace DMS.Infrastructure;
+
+public class DbContext
+{
+    public static SqlSugarClient GetInstance()
+    {
+        var settings = ConnectionSettings.Load();
+        var connectionString = settings.ToConnectionString();
+        var dbType = (SqlSugar.DbType)Enum.Parse(typeof(SqlSugar.DbType), settings.DbType);
+
+        var _db = new SqlSugarClient(new ConnectionConfig
+        {
+            ConnectionString = connectionString,
+            DbType = dbType, // 根据实际数据库类型修改，如DbType.MySql等
+            IsAutoCloseConnection = true,
+            InitKeyType = InitKeyType.Attribute
+        });
+
+
+        return _db;
+    }
+}