单实例

BatteryIndicator/BatteryIndicator.csproj

@@ -12,6 +12,21 @@
     <FileAlignment>512</FileAlignment>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
     <Deterministic>true</Deterministic>
+    <PublishUrl>publish\</PublishUrl>
+    <Install>true</Install>
+    <InstallFrom>Disk</InstallFrom>
+    <UpdateEnabled>false</UpdateEnabled>
+    <UpdateMode>Foreground</UpdateMode>
+    <UpdateInterval>7</UpdateInterval>
+    <UpdateIntervalUnits>Days</UpdateIntervalUnits>
+    <UpdatePeriodically>false</UpdatePeriodically>
+    <UpdateRequired>false</UpdateRequired>
+    <MapFileExtensions>true</MapFileExtensions>
+    <ApplicationRevision>0</ApplicationRevision>
+    <ApplicationVersion>1.0.0.%2a</ApplicationVersion>
+    <IsWebBootstrapper>false</IsWebBootstrapper>
+    <UseApplicationTrust>false</UseApplicationTrust>
+    <BootstrapperEnabled>true</BootstrapperEnabled>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -85,5 +100,17 @@
     <Folder Include="Control\" />
     <Folder Include="Model\" />
   </ItemGroup>
+  <ItemGroup>
+    <BootstrapperPackage Include=".NETFramework,Version=v4.6.1">
+      <Visible>False</Visible>
+      <ProductName>Microsoft .NET Framework 4.6.1 %28x86 and x64%29</ProductName>
+      <Install>true</Install>
+    </BootstrapperPackage>
+    <BootstrapperPackage Include="Microsoft.Net.Framework.3.5.SP1">
+      <Visible>False</Visible>
+      <ProductName>.NET Framework 3.5 SP1</ProductName>
+      <Install>false</Install>
+    </BootstrapperPackage>
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
 </Project>

BatteryIndicator/Program.cs

@@ -1,9 +1,8 @@
-using BatteryIndicator.UI;
-using BatteryIndicator.Views;
+using BatteryIndicator.Views;
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
+using System.Diagnostics;
+using System.Reflection;
+using System.Runtime.InteropServices;
 using System.Windows.Forms;
 
 namespace BatteryIndicator
@@ -16,12 +15,53 @@ namespace BatteryIndicator
         [STAThread]
         static void Main()
         {
-            Application.EnableVisualStyles();
-            Application.SetCompatibleTextRenderingDefault(false);
-            //Application.Run(new SettingForm());
+            Process instance = RunningInstance();
+            if (instance == null)
+            {
 
-            TrayIcon trayIcon = new TrayIcon();
-            Application.Run();
+                Application.EnableVisualStyles();
+                Application.SetCompatibleTextRenderingDefault(false);
+                //Application.Run(new SettingForm());
+
+                TrayIcon trayIcon = new TrayIcon();
+                Application.Run();
+            }
+            else
+            {
+                MessageBox.Show("程序已经在运行", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
+            }
+
+        }
+
+        [DllImport("User32.dll", EntryPoint = "FindWindow")]
+        private static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
+
+        [DllImport("User32.dll")]
+        private static extern bool ShowWindowAsync(IntPtr hWnd, int cmdShow);
+
+        [DllImport("User32.dll")]
+        private static extern bool SetForegroundWindow(IntPtr hWnd);
+
+        public static Process RunningInstance()
+        {
+            // 获取当前活动的进程
+            Process current = Process.GetCurrentProcess();
+            // 获取当前本地计算机上指定的进程名称的所有进程
+            Process[] processes = Process.GetProcessesByName(current.ProcessName);
+            foreach (Process process in processes)
+            {
+                // 忽略当前进程
+                if (process.Id != current.Id)
+                {
+                    if (Assembly.GetExecutingAssembly().Location.Replace("/", "\\") == current.MainModule.FileName)
+                    {
+                        return process;
+                    }
+                }
+            }
+
+            // 如果没有其他同名进程存在,则返回 null
+            return null;
         }
     }
-}
+}

BatteryIndicator/Properties/AssemblyInfo.cs

@@ -6,11 +6,11 @@ using System.Runtime.InteropServices;
 // set of attributes. Change these attribute values to modify the information
 // associated with an assembly.
 [assembly: AssemblyTitle("BatteryIndicator")]
-[assembly: AssemblyDescription("")]
+[assembly: AssemblyDescription("battery pacentage indicator")]
 [assembly: AssemblyConfiguration("")]
-[assembly: AssemblyCompany("")]
+[assembly: AssemblyCompany("ZhiZhou Information Technology lnc")]
 [assembly: AssemblyProduct("BatteryIndicator")]
-[assembly: AssemblyCopyright("Copyright ©  2022")]
+[assembly: AssemblyCopyright("Copyright Zhizhou ©  2022")]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
 
@@ -32,5 +32,5 @@ using System.Runtime.InteropServices;
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.0.0")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: AssemblyVersion("1.1.0.0")]
+[assembly: AssemblyFileVersion("1.1.0.0")]