添加了后台的数据处理服务。并判断如果值发生了变化则更新数据库

Services/Processors/UpdateDbVariableProcessor.cs

@@ -0,0 +1,37 @@
+using System.Threading.Tasks;
+using PMSWPF.Models;
+using PMSWPF.Helper;
+
+namespace PMSWPF.Services.Processors
+{
+    public class UpdateDbVariableProcessor : IVariableDataProcessor
+    {
+        private readonly DataServices _dataServices;
+
+        public UpdateDbVariableProcessor(DataServices dataServices)
+        {
+            _dataServices = dataServices;
+        }
+
+        public async Task ProcessAsync(VariableDataContext context)
+        {
+            try
+            {
+                // 假设 DataServices 有一个方法来更新 VariableData
+                await _dataServices.UpdateVariableDataAsync(context.Data);
+                NlogHelper.Info($"数据库变量 {context.Data.Name} 更新成功，值为: {context.Data.DataValue}");
+                
+                if (!_dataServices.AllVariables.TryGetValue(context.Data.Id, out VariableData oldVariable))
+                {
+                    NlogHelper.Warn($"数据库更新完成修改变量值是否改变时在_dataServices.AllVariables中找不到Id:{context.Data.Id},Name:{context.Data.Name}的变量。");
+                    context.IsHandled = true;
+                }
+                oldVariable.DataValue = context.Data.DataValue;
+            }
+            catch (Exception ex)
+            {
+                NlogHelper.Error($"更新数据库变量 {context.Data.Name} 失败: {ex.Message}", ex);
+            }
+        }
+    }
+}