修改了Dialog的调用方式，和实现了添加设备添加到侧边菜单中

Data/Repositories/DeviceRepository.cs

@@ -0,0 +1,55 @@
+using PMSWPF.Data.Entities;
+using PMSWPF.Excptions;
+using PMSWPF.Extensions;
+using PMSWPF.Helper;
+using PMSWPF.Models;
+using SqlSugar;
+
+namespace PMSWPF.Data.Repositories;
+
+public class DeviceRepository 
+{
+    private SqlSugarClient _db;
+    public DeviceRepository()
+    {
+        _db = DbContext.GetInstance();
+    }
+    public async Task<bool> Add(Device device)
+    {
+        var exist = await _db.Queryable<DbDevice>().Where(d => d.Name == device.Name).FirstAsync();
+        if (exist != null) throw new DbExistException("设备名称已经存在。");
+        var dbDevice = new DbDevice();
+        device.CopyTo(dbDevice);
+        dbDevice.VariableTables = new List<DbVariableTable>();
+        // 添加默认变量表
+        var dbVariableTable = new DbVariableTable();
+        dbVariableTable.Name = "默认变量表";
+        dbVariableTable.Description = "默认变量表";
+        dbVariableTable.ProtocolType = dbDevice.ProtocolType;
+        dbDevice.VariableTables.Add(dbVariableTable);
+        return await _db.InsertNav(dbDevice).Include(d => d.VariableTables).ExecuteCommandAsync();
+    }
+
+    public async Task<List<Device>> GetAll()
+    {
+        var dlist = await _db.Queryable<DbDevice>().Includes(d => d.VariableTables).ToListAsync();
+        var devices = new List<Device>();
+        foreach (var dbDevice in dlist)
+        {
+            var device = dbDevice.CopyTo<Device>();
+            devices.Add(device);
+        }
+
+        return devices;
+    }
+
+    public async Task<DbDevice> GetById(int id)
+    {
+        return await _db.Queryable<DbDevice>().FirstAsync(p => p.Id == id);
+    }
+
+    public async Task<int> DeleteById(int id)
+    {
+        return await _db.Deleteable<DbDevice>(new DbDevice { Id = id }).ExecuteCommandAsync();
+    }
+}