精确优化程序关闭问题

全自动水压检测仪/Coeffiicientsetting.cs

@@ -50,13 +50,22 @@ namespace 全自动水压检测仪
             };
             timer.Tick += async (s, e) =>
             {
+                // 检查窗体状态
+                if (this.IsDisposed || !this.IsHandleCreated)
+                {
+                    return;
+                }
+
                 if (!_isManualInput && _modbusMaster != null)
                 {
                     try
                     {
                         await ReadLeakTestParametersAsync();
                     }
-                    catch { }
+                    catch (Exception ex)
+                    {
+                        Debug.WriteLine($"定时器读取参数异常: {ex.Message}");
+                    }
                 }
             };
 
@@ -292,24 +301,60 @@ namespace 全自动水压检测仪
 
         private void Coeffiicientsetting_FormClosing(object sender, FormClosingEventArgs e)
         {
-            _cts.Cancel();
-            _cts.Dispose();
-
-            // 停止定时器
-            _readTimer?.Stop();
-            _readTimer?.Dispose();
-
-            // 仅用户主动关闭时退出应用
-            if (e.CloseReason == CloseReason.UserClosing)
+            try
             {
-                ModbusResourceManager.Instance?.Dispose();
-                Application.Exit();
+                // 取消异步操作
+                if (_cts != null && !_cts.IsCancellationRequested)
+                {
+                    _cts.Cancel();
+                    _cts.Dispose();
+                    _cts = null;
+                }
+
+                // 停止定时器
+                if (_readTimer != null)
+                {
+                    _readTimer.Stop();
+                    _readTimer.Tick -= null;
+                    _readTimer.Dispose();
+                    _readTimer = null;
+                }
+
+                // 仅用户主动关闭时退出应用
+                if (e.CloseReason == CloseReason.UserClosing)
+                {
+                    try
+                    {
+                        ModbusResourceManager.Instance?.Dispose();
+                    }
+                    catch (Exception ex)
+                    {
+                        Debug.WriteLine($"释放Modbus资源失败: {ex.Message}");
+                    }
+                    Application.Exit();
+                }
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine($"窗体关闭异常: {ex.Message}");
+                // 确保应用能够退出
+                if (e.CloseReason == CloseReason.UserClosing)
+                {
+                    Application.Exit();
+                }
             }
         }
 
         private void Coeffiicientsetting_FormClosed(object sender, FormClosedEventArgs e)
         {
-            _normalTemperatureMode?.Dispose();
+            try
+            {
+                _normalTemperatureMode?.Dispose();
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine($"释放主窗体资源失败: {ex.Message}");
+            }
         }