添加不可重复启动软件限制

DM_Weight/App.xaml

@@ -6,7 +6,7 @@
              d1p1:Ignorable="d"
              xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
              xmlns:local="clr-namespace:DM_Weight"
-             xmlns:prism="http://prismlibrary.com/">
+             xmlns:prism="http://prismlibrary.com/" Startup="PrismApplication_Startup">
     <Application.Resources>
         <ResourceDictionary>
             <ResourceDictionary.MergedDictionaries>

DM_Weight/App.xaml.cs

@@ -24,6 +24,8 @@ using System.Windows.Interop;
 using System.Windows.Threading;
 using System.Timers;
 using DM_Weight.HIKVISION;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
 
 namespace DM_Weight
 {
@@ -277,5 +279,42 @@ namespace DM_Weight
             logger.Info("结束APP-RegisterTypes");
 
         }
+
+        private void PrismApplication_Startup(object sender, StartupEventArgs e)
+        {
+            //获取欲启动程序名
+            string processName = System.Diagnostics.Process.GetCurrentProcess().ProcessName;
+            //检查程序是否已经启动，已经启动则显示提示退出程序
+            if (System.Diagnostics.Process.GetProcessesByName(processName).Length > 1)
+            {
+                //系统在运行
+                RaiseOtherProcess();
+                Application.Current.Shutdown();
+                return;
+            }
+        }
+        private static void RaiseOtherProcess()
+        {
+            Process proc = Process.GetCurrentProcess();
+            foreach (Process otherProc in Process.GetProcessesByName(Process.GetCurrentProcess().ProcessName))
+            {
+                if (proc.Id != otherProc.Id)
+                {
+                    IntPtr hWnd = otherProc.MainWindowHandle;
+                    if (IsIconic(hWnd))
+                    {
+                        ShowWindowAsync(hWnd, 9);
+                    }
+                    SetForegroundWindow(hWnd);
+                    break;
+                }
+            }
+        }
+        [DllImport("user32.dll")]
+        private static extern bool SetForegroundWindow(IntPtr hWnd);
+        [DllImport("user32.dll")]
+        private static extern bool ShowWindowAsync(IntPtr hWnd, int nCmdShow);
+        [DllImport("user32.dll")]
+        private static extern bool IsIconic(IntPtr hWnd);
     }
 }