我们如何从Microsoft Office加载项调用Invoke(Delegate)方法? [英] How can we call Invoke(Delegate) method from a Microsoft Office Add-in?

问题描述

问题:我们如何使用 Microsoft Office 2010-2016 VSTO 项目.或者，对于 VSTO 项目，是否有其他替代方案?

Question: How can we use Invoke(...) method in a Microsoft Office 2010-2016 VSTO project. Or, are there any work around, alternatives etc for a VSTO project?

背景:我正在尝试实现第三方将Windows窗体应用程序添加到我的

Background: I am trying to implement a source code of a third party Windows Forms application into my Microsoft Office VSTO add-in project. The third party vendor has provided its users a sample/example as a Windows Form project with source code and has asked its users to mimic that code to their other projects (WPF, Office Solutions etc.).

我已经能够实现其Windows Forms示例应用程序的所有部分，但我的 VSTO 项目中的 VS2019 无法识别的以下代码行除外:

I have been able to implement all parts of their Windows Forms sample app except the following line of code that is not recognized by the VS2019 in my VSTO project:

    Invoke(new IsActivatedDelegate(CheckIfActivated));

备注: delegate void IsActivatedDelegate(); 是在其示例的 Form1.cs 文件中声明的委托，而CheckIfActivated()是一种方法在同一 Form1.cs 文件中声明.

Remark: delegate void IsActivatedDelegate(); is a delegate declared in their sample's Form1.cs file and CheckIfActivated() is a method declared in the same Form1.cs file.

现在，我们知道

Now, we know that the Invoke(...) method is from the Control class of System.Windows.Forms namespace. And, hence, cannot be used in a VSTO project. But there may be an alternative for a VSTO project.

更新:

以下内容摘自第三方示例代码的 Form1.cs 文件，该文件正在调用

Following is an excerpt from the Form1.cs file of the third party's sample code that is calling Invoke(...) method:

...........
...........
void mnuActDeact_Click(object sender, EventArgs e)
{
    if (isGenuine)
    {
        // deactivate product without deleting the product key allows the user to easily reactivate
        try
        {
            ta.Deactivate(false);
        }
        catch (ThirdPartyObjectException ex)
        {
            MessageBox.Show("Failed to deactivate: " + ex.Message);
            return;
        }

        isGenuine = false;
        ShowTrial(true);
    }
    else
    {
        // Note: you can launch the ThirdPartyObject wizard or you can create you own interface

        // launch ThirdPartyObject.exe to get the product key from the user, and activate.
        Process TAProcess = new Process
        {
            StartInfo =
            {
                FileName = Path.Combine(
                    Path.GetDirectoryName(Application.ExecutablePath),"ThirdPartyObject.exe")
            },
            EnableRaisingEvents = true
        };

        TAProcess.Exited += p_Exited;
        TAProcess.Start();
    }
}

void p_Exited(object sender, EventArgs e)
{
    // remove the event
    ((Process) sender).Exited -= p_Exited;

    // the UI thread is running asynchronous to ThirdPartyObject closing that's why we can't call CheckIfActivated(); directly
    Invoke(new IsActivatedDelegate(CheckIfActivated));
}

delegate void IsActivatedDelegate();

void CheckIfActivated()
{
    bool isNowActivated = false;

    try
    {
        isNowActivated = ta.IsActivated();
    }
    catch (ThirdPartyObjectException ex)
    {
        MessageBox.Show("Failed to check if activated: " + ex.Message);
        return;
    }

    // recheck if activated
    if (isNowActivated)
    {
        isGenuine = true;
        ReEnableAppFeatures();
        ShowTrial(false);
    }
}
............
........

推荐答案

我希望您出于上下文的考虑而显示代码...至少有几行...我知道这一点.如果你有话

I wish you showed code for context sake... at least a few of the lines...buh I know this. if you have say

YourDelegate yd = new YourDelegate(YourMethod);

您可以替代:

yd.Invoke(new IsActivatedDelegate(CheckIfActivated));

使用

yd(new IsActivatedDelegate(CheckIfActivated));

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