EntryPointNotFoundException TaskDialog在应用程序启动时，但稍后运行良好

Question

我直接从WindowsAPI Pack for .NET（包装器）中获得了TaskDialog源代码，但是每当我尝试直接在程序的静态空白Main（）区域中打开TaskDialog时，它都会抛出EntryPointNotFoundException。但是，TaskDialog 稍后在我的代码中生成并显示得非常好。这是为什么呢？

引发 EntryPointNotFoundException 的代码是

/// <summary>
/// TaskDialogIndirect taken from commctl.h
/// </summary>
/// <param name="pTaskConfig">All the parameters about the Task Dialog to Show.</param>
/// <param name="pnButton">The push button pressed.</param>
/// <param name="pnRadioButton">The radio button that was selected.</param>
/// <param name="pfVerificationFlagChecked">The state of the verification checkbox on dismiss of the Task Dialog.</param>
[DllImport("ComCtl32", CharSet = CharSet.Unicode, PreserveSig = false)]
internal static extern void TaskDialogIndirect(
    [In] ref TASKDIALOGCONFIG pTaskConfig,
    [Out] out int pnButton,
    [Out] out int pnRadioButton,
    [Out] out bool pfVerificationFlagChecked);

但

让我感到震惊的是，不同地方的相同代码可以工作一次，但不能在另一个时间工作。这可能与程序未加载引用或其他原因有关，但它只是让我大吃一惊。我的应用入口点处的代码是

try
{
    var taskDialog = new TaskDialog();
    taskDialog.WindowTitle = ".NET Update Notification";
    taskDialog.MainInstruction = "";
    taskDialog.MainIcon = TaskDialogIcon.Error;
    taskDialog.EnableHyperlinks = true;
    taskDialog.Content =
        "Your .NET Framework Version is out-of-date.nPlease see <a href="***********">the forums</a> for more info.nnSorry, but I can't continue without it.nn If you had the correct install this message wouldn't appear.";
    taskDialog.Callback =
        new TaskDialogCallback((ActiveTaskDialog _taskDialog, TaskDialogNotificationArgs _args, object _callbackData) =>
            {
                if (_args.Notification == TaskDialogNotification.HyperlinkClicked)
                {
                    Process.Start(_args.Hyperlink);
                }
                return false;
            });
    var doItButton = new TaskDialogButton();
    doItButton.ButtonId = 101;
    doItButton.ButtonText = "Quit";
    taskDialog.Buttons = new TaskDialogButton[] { doItButton };
    int result = taskDialog.Show(null);
    Application.Exit();
}
/*
* Handles the error message regarding ComCtl32.dll not being found.
* In the event of the beautiful TaskDialog above (which uses ComCtl32.dll)
* cannot be opened, fall back to an ugly as **** MessageBox with a '?' Help
* button in the title bar -.-
*/
catch (EntryPointNotFoundException)
{
    MessageBox.Show(
        "Your .NET Framework Version is out-of-date.nTo find out how to get .NET 4.0 simply visit the forums at *********.nnSorry, but I can't continue without it :(",
        ".NET Update Notification", MessageBoxButtons.OK, MessageBoxIcon.Error);
}

感谢您抽出宝贵时间:)

乔希

Answer 1

试试 MSDN 的这个解决方案 -

步骤 1：在解决方案资源管理器中右键单击您的项目

步骤 2：选择 -> 添加 -> 新项目

步骤 3：在 VS 2010 中添加应用程序清单文件，该文件是 app.manifest

步骤 4：取消注释从依赖项标记到/依赖项的最后一个 xml 部分

代码应该看起来像这样 -

<dependency>
<dependentAssembly>
 <assemblyIdentity
  type="win32"
  name="Microsoft.Windows.Common-Controls"
  version="6.0.0.0"
  processorArchitecture="*"
  publicKeyToken="6595b64144ccf1df"
  language="*"
 />