如何打开外部程序并在按钮中单击

Question

我可以打开它，但我无法点击。

我试试

public RecordProgram()
{
    ProcessStartInfo psi = new ProcessStartInfo(@"C:\MouseController.exe", @"C:\test1.mcd");
    psi.UseShellExecute = false;
    _calculatorProcess = Process.Start(psi);

    int ct = 0;
    do
    {
        _calculatorAutomationElement = AutomationElement.RootElement.FindFirst(TreeScope.Children, new PropertyCondition(AutomationElement.NameProperty, "MouseController (1,0x)"));
        ++ct;
        Thread.Sleep(100);
    } 
    while (_calculatorAutomationElement == null && ct < 50);

    if (_calculatorAutomationElement == null)
    {
        throw new InvalidOperationException("Calculator must be running");
    }
    //This line returns null
    _resultTextBoxAutomationElement = _calculatorAutomationElement.FindFirst(TreeScope.Children, new PropertyCondition(AutomationElement.AutomationIdProperty, "920388"));

    if (_resultTextBoxAutomationElement == null)
    {
        //Ever get null
        throw new InvalidOperationException("Could not find result box");
    }

    GetInvokePattern(GetFunctionButton(Functions.StartPlayBack)).Invoke();
}

程序运行并使用我的文件加载打开可执行文件但是_resultTextBoxAutomationElement返回空值。