示波器修改：visa连接方式+截图保存

UIShare/GlobalVariable/DeviceManager.cs

@@ -68,6 +68,12 @@ namespace UIShare.GlobalVariable
                 return $"Tcp:{config.TcpConfig.IPAddress}:{config.TcpConfig.Port}";
             }
 
+            if (string.Equals(config.ConnectionType, "Visa", StringComparison.OrdinalIgnoreCase)
+                && config.VisaConfig != null)
+            {
+                return $"Visa:{config.VisaConfig.ResourceName}";
+            }
+
             if (string.Equals(config.ConnectionType, "Serial", StringComparison.OrdinalIgnoreCase)
                 && config.SerialPortConfig != null)
             {
@@ -129,6 +135,7 @@ namespace UIShare.GlobalVariable
                         return config.ConnectionType switch
                         {
                             "Tcp" => CreateTcpDevice(deviceType, config.TcpConfig)!,
+                            "Visa" => CreateVisaDevice(deviceType, config.VisaConfig)!,
                             "Serial" => CreateSerialDevice(deviceType, config.SerialPortConfig)!,
                             _ => null!
                         };
@@ -379,6 +386,7 @@ namespace UIShare.GlobalVariable
                 bool ok = conn switch
                 {
                     "Tcp" => await ConnectTcpAsync(name, device, ct),
+                    "Visa" => await ConnectVisaAsync(name, device, ct),
                     "Serial" => await ConnectSerialAsync(name, device, ct),
                     _ => false
                 };
@@ -417,6 +425,16 @@ namespace UIShare.GlobalVariable
             return false;
         }
 
+        private static async Task<bool> ConnectVisaAsync(string name, IBaseInterface device, CancellationToken ct)
+        {
+            if (device is IVisa visa)
+            {
+                return await visa.ConnectAsync(ct);
+            }
+            LoggerHelper.Warn($"设备 [{name}] 配置为 Visa 但未实现 IVisa，实际类型为 {device.GetType().Name}。");
+            return false;
+        }
+
         private static async Task<bool> ConnectSerialAsync(string name, IBaseInterface device, CancellationToken ct)
         {
             if (device is not ISerialPort sp)
@@ -533,7 +551,34 @@ namespace UIShare.GlobalVariable
                 SendTimeout = vm.SendTimeout,
                 ReceiveTimeout = vm.ReceiveTimeout
             };
-            return Activator.CreateInstance(type, cfg) as IBaseInterface;
+            try
+            {
+                return Activator.CreateInstance(type, cfg) as IBaseInterface;
+            }
+            catch (Exception ex)
+            {
+                LoggerHelper.Warn($"实例化 Tcp 设备 [{type.Name}] 失败（连接配置与设备构造函数不匹配？）：{ex.InnerException?.Message ?? ex.Message}");
+                return null;
+            }
+        }
+        private static IBaseInterface? CreateVisaDevice(Type type, VisaConfigVM? vm)
+        {
+            vm ??= new VisaConfigVM();
+            var cfg = new VisaConfig
+            {
+                ResourceName = vm.ResourceName,
+                OpenTimeout = vm.OpenTimeout,
+                IOTimeout = vm.IOTimeout
+            };
+            try
+            {
+                return Activator.CreateInstance(type, cfg) as IBaseInterface;
+            }
+            catch (Exception ex)
+            {
+                LoggerHelper.Warn($"实例化 Visa 设备 [{type.Name}] 失败（连接配置与设备构造函数不匹配？）：{ex.InnerException?.Message ?? ex.Message}");
+                return null;
+            }
         }
         private static IBaseInterface? CreateSerialDevice(Type type, SerialPortConfigVM? vm)
         {
@@ -548,7 +593,15 @@ namespace UIShare.GlobalVariable
                 ReadTimeout = vm.ReadTimeout,
                 WriteTimeout = vm.WriteTimeout
             };
-            return Activator.CreateInstance(type, cfg) as IBaseInterface;
+            try
+            {
+                return Activator.CreateInstance(type, cfg) as IBaseInterface;
+            }
+            catch (Exception ex)
+            {
+                LoggerHelper.Warn($"实例化 Serial 设备 [{type.Name}] 失败（连接配置与设备构造函数不匹配？）：{ex.InnerException?.Message ?? ex.Message}");
+                return null;
+            }
         }
 
         public void Dispose()