[.NET] WebView2 單一檔案部屬
有些部屬環境要求能單一執行檔，如果要使用自己的 DLL 就會有問題，研究了內嵌 DLL 的作法應用於 WebView2 專案上。
以 .NET Framework 4.7.2 的 WinForm 專案為例，目標環境為 windows x64。
Dependency 安裝 Nuget 上的 Microsoft.Web.WebView2。
把這些資料夾底下的 Dll 複製到專案資料夾下，並加入版控
packages\Microsoft.Web.WebView2.1.0.1823.32\runtimes packages\Microsoft.Web.WebView2.1.0.1823.32\lib\net45 參考移除上述 Dll 參考(移除 Nuget 參考)，改直接參考專案資料夾下的 Dll。
把參考的 Dll 調整為內嵌資源
AssemblyHelper.cs public class AssemblyHelper
{
public string Name
{
get
{
return this.assembly.GetName().Name;
}
}
public string AppDataPath { get; set; }
private Assembly assembly;
public AssemblyHelper()
{
assembly = Assembly.GetCallingAssembly();
AppDataPath = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
AppDataPath = Path.Combine(AppDataPath, Name);
}
/// <summary>
/// Extract embeded dll to target path
/// </summary>
/// <param name="resourceName">Dll embed path</param>
/// <param name="targetPath">Dll extract distination</param>
public void ExtractEmbeddedDLL(string resourceName, string targetPath)
{
var targetDir = Path.GetDirectoryName(targetPath);
if (!string.IsNullOrEmpty(targetDir) && !Directory.Exists(targetDir)) Directory.CreateDirectory(targetDir);
using (Stream resourceStream = assembly.GetManifestResourceStream(resourceName))
{
using (FileStream fileStream = new FileStream(targetPath, FileMode.Create))
{
resourceStream.CopyTo(fileStream);
}
}
}
/// <summary>
/// 設置解析組件路徑的事件處理常式
/// </summary>
public void EnableEmbededManifestDll() => AppDomain.CurrentDomain.AssemblyResolve += OnResolveAssembly;
/// <summary>
/// Assembly 解析行為
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
/// <returns></returns>
public static Assembly OnResolveAssembly(object sender, ResolveEventArgs args)
{
Assembly assembly = Assembly.GetCallingAssembly();
string project = Assembly.GetEntryAssembly().GetName().Name;
string manifestItem = $"{project}.{new AssemblyName(args.Name).Name}.dll";
using (Stream stream = assembly.GetManifestResourceStream(manifestItem))
{
if (stream == null) return null;
byte[] assemblyRawBytes = new byte[stream.Length];
stream.Read(assemblyRawBytes, 0, assemblyRawBytes.Length);
return Assembly.Load(assemblyRawBytes);
}
}
}
Program.cs internal static class Program
{
[STAThread]
static void Main()
{
try
{
var asm = new AssemblyHelper();
// Load an extracted DLL dynamically
asm.EnableEmbededManifestDll();
var loaderDllFolderPath = Path.Combine(asm.AppDataPath, "runtimes\\win-x64\\native");
var dll = Path.Combine(loaderDllFolderPath, "WebView2Loader.dll");
var loaderDllEmbedPath = $"{asm.Name}.runtimes.win_x64.native.WebView2Loader.dll";
asm.ExtractEmbeddedDLL(loaderDllEmbedPath, dll);
// 將需注入 DLL 的邏輯抽離 Main 才能跑
run(loaderDllFolderPath);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private static void run(string loaderDllFolderPath)
{
CoreWebView2Environment.SetLoaderDllFolderPath(loaderDllFolderPath);
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
}
隱藏暫存檔 假設 webview2 元件變數是wv：
