Single Executable File

单文件可执行程序

通常情况下，如果WPF程序引用其它dll时，在运行该程序时，需要把引用的dll复制到WPF程序同一个目录下，否则会导致不可运行。但是我们可以通过如下方式把dll嵌入到WPF程序中，让dll和exe文件合并一个单独的exe可执行程序。

修改项目配置，xxxx.csproj文件

<Target Name="AfterResolveReferences">
	<ItemGroup>
	  <EmbeddedResource Include="@(ReferenceCopyLocalPaths)" Condition="'%(ReferenceCopyLocalPaths.Extension)' == '.dll'">
	    <LogicalName>%(ReferenceCopyLocalPaths.DestinationSubDirectory)%(ReferenceCopyLocalPaths.Filename)%(ReferenceCopyLocalPaths.Extension)</LogicalName>
	  </EmbeddedResource>
	</ItemGroup>
</Target>

修改App类

public partial class App : Application
{
    private static Assembly OnResolveAssembly(object sender, ResolveEventArgs args)
    {
        Assembly executingAssembly = Assembly.GetExecutingAssembly();
        var executingAssemblyName = executingAssembly.GetName();
        var resName = executingAssemblyName.Name + ".resources";

        AssemblyName assemblyName = new AssemblyName(args.Name); string path = "";
        if (resName == assemblyName.Name)
        {
            path = executingAssemblyName.Name + ".g.resources"; ;
        }
        else
        {
            path = assemblyName.Name + ".dll";
            if (assemblyName.CultureInfo.Equals(CultureInfo.InvariantCulture) == false)
            {
                path = string.Format(@"{0}\{1}", assemblyName.CultureInfo, path);
            }
        }

        using (Stream stream = executingAssembly.GetManifestResourceStream(path))
        {
            if (stream == null)
                return null;

            byte[] assemblyRawBytes = new byte[stream.Length];
            stream.Read(assemblyRawBytes, 0, assemblyRawBytes.Length);
            return Assembly.Load(assemblyRawBytes);
        }
    }

    protected override void OnStartup(StartupEventArgs e)
    {
        base.OnStartup(e);
        AppDomain.CurrentDomain.AssemblyResolve += OnResolveAssembly;
    }
}

删除自动生成的dll

在Build Events -> Post-build event command line中添加如下配置，但是如果WPF控件中使用外部引用作为XAML的资源时，则通常不建议添加改指令，因为它会删除外面dll，导致引用失败。

cd $(TargetDir)
del *.dll

单实例应用程序 Single Instance Application

public partial class App : Application
{
    private EventWaitHandle programStarted { get; set; }

    protected override void OnStartup(StartupEventArgs e)
    {
        CheckSingleInstanceApplication();            

        base.OnStartup(e);
    }

    private void CheckSingleInstanceApplication()
    {
        programStarted = new EventWaitHandle(false, EventResetMode.AutoReset, "PMOP.WPF.Startup", out bool createNew);
        if (!createNew)
        {
            MessageBox.Show("PMOP is already started.");
            App.Current.Shutdown();
            Environment.Exit(0);
        }
    }
}