C# 使用c在IE11中自动下载文件#

[DllImport("user32.dll"]
static extern IntPtr FindWindowByCaption

我正在尝试获取窗口处理程序并按下保存按钮。我在IE8和IE9上找到了几个例子。但该代码在IE11上不起作用

    const int BM_CLICK = 0x00F5;

    [DllImport("user32.dll", SetLastError = true)]
    static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

    [DllImport("user32.dll")]
    [return: MarshalAs(UnmanagedType.Bool)]
    static extern bool SetForegroundWindow(IntPtr hWnd);

    [DllImport("user32.dll", SetLastError = true)]
    static extern IntPtr SetActiveWindow(IntPtr hWnd);

    [DllImport("user32.dll", CharSet = CharSet.Auto)]
    public static extern IntPtr FindWindowEx(IntPtr parent, IntPtr next, string sClassName, IntPtr sWindowTitle);

    [DllImport("user32.dll", SetLastError = true)]
    static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);

    [DllImport("user32.dll", CharSet = CharSet.Auto)]
    static extern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, IntPtr wParam, IntPtr lParam);



    [DllImport("user32.dll", ExactSpelling = true, CharSet = CharSet.Auto)]
    public static extern uint GetDlgCtrlID(IntPtr hWnd); 

    [DllImport("user32.dll", CharSet = CharSet.Auto)]
    public static extern IntPtr SendMessage(IntPtr hWnd, int msg, int wParam, IntPtr lParam); 

        //hDialog  - handle of dialog window. idBtn - Id of button
      public static bool ClickButtonOnDialog(IntPtr hDialog, UInt32 idBtn)
      {
          IntPtr res = IntPtr.Zero;
          uint id;
          IntPtr hOkBtn = IntPtr.Zero;
          int attempt = 0;
          do
          {
              Thread.Sleep(300);
              //searching for button
              hOkBtn = FindWindowEx(hDialog, hOkBtn, "Button", IntPtr.Zero);
              id = GetDlgCtrlID(hOkBtn);
              attempt++;
          } while (id != idBtn && attempt < 20);
          if (!hOkBtn.Equals(IntPtr.Zero))
          {
              //click the button
              res = SendMessage(hOkBtn, (int)BM_CLICK, 1, IntPtr.Zero);
          }
          if (res.ToInt32() == 1)
              return true;
          return false;
      }

      public static void FindAndSave()
      {
          IntPtr hOkBtn = IntPtr.Zero;
          uint message = 0xf5;

          IntPtr hwnd = FindWindow(null, "Internet Explorer");
          hOkBtn = FindWindowEx(hwnd, hOkBtn, "Button", "Cancel");
          SendMessage(hOkBtn, (int)message, 1, IntPtr.Zero);

[DllImport("user32.dll"]
static extern IntPtr FindWindowByCaption

const int BM\u CLICK=0x00F5；
[DllImport（“user32.dll”，SetLastError=true）]
静态外部IntPtr FindWindow（字符串lpClassName，字符串lpWindowName）；
[DllImport（“user32.dll”）]
[返回：Marshallas（UnmanagedType.Bool）]
静态外部bool setforegroundindow（IntPtr hWnd）；
[DllImport（“user32.dll”，SetLastError=true）]
静态外部IntPtr SetActiveWindow（IntPtr hWnd）；
[DllImport（“user32.dll”，CharSet=CharSet.Auto）]
公共静态外部IntPtr FindWindowEx（IntPtr parent，IntPtr next，字符串sClassName，IntPtr sWindowTitle）；
[DllImport（“user32.dll”，SetLastError=true）]
静态外部IntPtr FindWindowEx（IntPtr hwndParent、IntPtr hwndChildAfter、字符串lpszClass、字符串lpszWindow）；
[DllImport（“user32.dll”，CharSet=CharSet.Auto）]
静态外部IntPtr发送消息（IntPtr hWnd、UInt32消息、IntPtr wParam、IntPtr LPRAM）；
[DllImport（“user32.dll”，ExactSpelling=true，CharSet=CharSet.Auto）]
公共静态外部单元GetDlgCtrlID（IntPtr hWnd）；
[DllImport（“user32.dll”，CharSet=CharSet.Auto）]
公共静态外部IntPtr SendMessage（IntPtr hWnd、int msg、int wParam、IntPtr lParam）；
//hDialog-对话框窗口的句柄。idBtn-按钮的Id
公共静态布尔单击按钮非对话（IntPtr hDialog，UInt32 idBtn）
{
IntPtr res=IntPtr.0；
单元id；
IntPtr hOkBtn=IntPtr.0；
int尝试=0；
做
{
睡眠（300）；
//搜索按钮
hOkBtn=FindWindowEx（hDialog，hOkBtn，“按钮”，IntPtr.Zero）；
id=GetDlgCtrlID（hOkBtn）；
尝试++；
}while（id！=idBtn&&trunt<20）；
如果（！hOkBtn.Equals（IntPtr.Zero））
{
//点击按钮
res=发送消息（hOkBtn，（int）BM_CLICK，1，IntPtr.Zero）；
}
if（res.ToInt32（）==1）
返回true；
返回false；
}
公共静态void FindAndSave（）
{
IntPtr hOkBtn=IntPtr.0；
uint消息=0xf5；
IntPtr hwnd=FindWindow（null，“Internet Explorer”）；
hOkBtn=FindWindowEx（hwnd，hOkBtn，“按钮”，“取消”）；
SendMessage（hOkBtn，（int）message，1，IntPtr.Zero）；

我可以使用下面的代码下载并关闭文件下载对话框

[DllImport("user32.dll", SetLastError = true)]
    static extern IntPtr FindWindow(string lpClassName, string lpWindowName);



    static void DownLoadFile(IE browser)
    {
        browser.Link(Find.ByText("download")).ClickNoWait();

        Thread.Sleep(1000);
        AutomationElementCollection dialogElements = AutomationElement.FromHandle(FindWindow(null, "Internet Explorer")).FindAll(TreeScope.Children, Condition.TrueCondition);
        foreach (AutomationElement element in dialogElements)
        {
            if (element.Current.Name.Equals("Save"))
            {
                var invokePattern = element.GetCurrentPattern(InvokePattern.Pattern) as InvokePattern;
                invokePattern.Invoke();

            }
        }
    }

[DllImport("user32.dll"]
static extern IntPtr FindWindowByCaption

我的做法：

[DllImport("user32.dll"]
static extern IntPtr FindWindowByCaption

使用windows API调用通过窗口标题标识窗口

[DllImport("user32.dll"]
static extern IntPtr FindWindowByCaption

在IE窗口中循环，直到找到窗口类名为“Frame Notification Bar”或“Notification Bar”的元素

[DllImport("user32.dll"]
static extern IntPtr FindWindowByCaption

找到名为“打开”或“保存”的按钮并执行单击

[DllImport("user32.dll"]
static extern IntPtr FindWindowByCaption

public  void DownLoadFile(string strWindowTitle)
{
    IntPtr TargetHandle = FindWindowByCaption(IntPtr.Zero, strWindowTitle);
    AutomationElementCollection ParentElements = AutomationElement.FromHandle(TargetHandle).FindAll(TreeScope.Children, Condition.TrueCondition);
    foreach (AutomationElement ParentElement in ParentElements)
    {
        // Identidfy Download Manager Window in Internet Explorer
        if (ParentElement.Current.ClassName == "Frame Notification Bar")
        {
            AutomationElementCollection ChildElements = ParentElement.FindAll(TreeScope.Children, Condition.TrueCondition);
            // Idenfify child window with the name Notification Bar or class name as DirectUIHWND 
            foreach (AutomationElement ChildElement in ChildElements)
            {
                if (ChildElement.Current.Name == "Notification bar" || ChildElement.Current.ClassName == "DirectUIHWND")
                {

                    AutomationElementCollection DownloadCtrls = ChildElement.FindAll(TreeScope.Children, Condition.TrueCondition);
                    foreach (AutomationElement ctrlButton in DownloadCtrls)
                    {
                        //Now invoke the button click whichever you wish
                        if (ctrlButton.Current.Name.ToLower() == "save")
                        {
                            var invokePattern = ctrlButton.GetCurrentPattern(InvokePattern.Pattern) as InvokePattern;
                            invokePattern.Invoke();
                        }

                    }
                }
            }


        }
    }
}

---

这是IE11代码。它是System.Windows.Automation和Win32 API的混合体。可能会使它与Win32非托管API一起工作。我过去常常获取菜单的类名，然后遍历其子元素

[DllImport("user32.dll"]
static extern IntPtr FindWindowByCaption

IE11有这个下载框架。

[DllImport("user32.dll"]
static extern IntPtr FindWindowByCaption

我们需要从Save的向下箭头访问Save-As

[DllImport("user32.dll"]
static extern IntPtr FindWindowByCaption

    [DllImport("user32.dll", SetLastError = true)]
    public static extern IntPtr FindWindow(string className, string windowTitle);

    public static void IeDownLoadSaveAs(string windowTitle = null)
    {
        if (windowTitle == null)
            windowTitle = "https://googledownload.com - Internet Explorer";
        //get the message handle
        //the last param "Untitled...is the title of the window and it must match
        IntPtr parentHandle = WindowHandleInfo.FindWindow("IEFrame", windowTitle);

        var parentElements = AutomationElement.FromHandle(parentHandle).FindAll(TreeScope.Children, Condition.TrueCondition);

        foreach (AutomationElement parentElement in parentElements)
        {
            // Identidfy Download Manager Window in Internet Explorer
            if (parentElement.Current.ClassName == "Frame Notification Bar")
            {
                var childElements = parentElement.FindAll(TreeScope.Children, Condition.TrueCondition);
                // Idenfify child window with the name Notification Bar or class name as DirectUIHWND 
                foreach (AutomationElement childElement in childElements)
                {
                    if (childElement.Current.Name == "Notification bar" || childElement.Current.ClassName == "DirectUIHWND")
                    {

                        var downloadCtrls = childElement.FindAll(TreeScope.Descendants, Condition.TrueCondition);
                        foreach (AutomationElement ctrlButton in downloadCtrls)
                        {
                            //Now invoke the button click whichever you wish
                            if (ctrlButton.Current.Name.ToLower() == "")
                            {
                                var saveSubMenu = ctrlButton.GetCurrentPattern(InvokePattern.Pattern) as InvokePattern;
                                saveSubMenu.Invoke();

                                var saveMenuHandle = WindowHandleInfo.FindWindow("#32768", "");
                                var subMenuItems = AutomationElement.FromHandle(saveMenuHandle).FindAll(TreeScope.Children, Condition.TrueCondition);

                                foreach (AutomationElement item in subMenuItems)
                                {
                                    if (item.Current.Name.ToLower() == "save as")
                                    {
                                        var saveAsMenuItem = item.GetCurrentPattern(InvokePattern.Pattern) as InvokePattern;
                                        saveAsMenuItem.Invoke();
                                    }
                                }

                            }

                        }
                    }
                }


            }
        }
    }

---

我用非常简单的方法实现了。只需使用按键。
SendKeys.SendWait（“%”；
SendKeys.SendWait（“%{s}”）；

[DllImport("user32.dll"]
static extern IntPtr FindWindowByCaption

---

希望这能节省您的时间。

我有两个IE进程正在运行-上面的代码总是选择错误的32位IE进程。因此，我合并了多个StackOverflow问题的答案，并编写了下面的代码来完成这项工作（没有dll导入）

[DllImport("user32.dll"]
static extern IntPtr FindWindowByCaption

请注意，为了使用AutomationElement方法，您需要在项目中添加对UIAutomationClient的引用

[DllImport("user32.dll"]
static extern IntPtr FindWindowByCaption

    public static void IESaveFile(string title)
    {
        Thread.Sleep(1000);
        //Get the Internet Explorer window handle using the window title
        var ieWindowHandle = Process.GetProcesses().FirstOrDefault(process => process.MainWindowTitle.Contains(title))?.MainWindowHandle;

        var dialogElements = AutomationElement.FromHandle(ieWindowHandle??IntPtr.Zero).FindAll(TreeScope.Children, Condition.TrueCondition);

        foreach (AutomationElement element in dialogElements)
        {
            if (element.Current.ClassName != "Frame Notification Bar") continue;
            var ChildElements = element.FindAll(TreeScope.Children, Condition.TrueCondition);

            foreach (AutomationElement ChildElement in ChildElements)
            {
                // Identify child window with the name Notification Bar or class name DirectUIHWND
                if (ChildElement.Current.Name != "Notification bar" && ChildElement.Current.ClassName != "DirectUIHWND") continue;
                var DownloadCtrls = ChildElement.FindAll(TreeScope.Children, Condition.TrueCondition);
                foreach (AutomationElement ctrlButton in DownloadCtrls)
                    //Now invoke the button click on the 'Save' button
                    if (ctrlButton.Current.Name.ToLower().Equals("save"))
                        ((InvokePattern) ctrlButton.GetCurrentPattern(InvokePattern.Pattern)).Invoke();
            }
        }
    }

---

您是否尝试过使用Autoit之类的工具？powershell是吗？我可以选择任何可以在C中使用的选项，但这不起作用。

FindWindow

将不接受值为

null

的第一个参数。遗憾的是，它在IE11中不起作用。IE11中没有单独打开的文件下载窗口：/请参阅我的IE 11a答案g of only code永远不是答案。请详细说明。1.第一步是我们将使用windows API调用通过窗口标题来识别窗口。[DllImport（“user32.dll”，EntryPoint=“FindWindow”，SetLastError=true）]静态外部IntPtr FindWindowByCaption（IntPtr ZeroOnly，字符串lpWindowName）；我的方法1.我们将使用windows API调用通过窗口标题识别窗口。[DllImport（“user32.dll”]静态外部IntPtr FindWindowByCaption 2.在IE窗口中循环，直到找到带有“框架通知栏”或“通知栏”的自动化元素作为窗口类名3。查找按钮自动化元素的名称“打开”或“保存”，然后执行单击。如何引用此“WindowHandleInfo.FindWindow”非常感谢您提供了这个可靠的解决方案！它工作得非常好！如果其他人也在研究这个问题，我很难让它正常工作，这里有什么帮助：“我一直很难找到WindowsBase，直到我意识到我的目标环境是.NET 2.0，所以作为提醒，请确保您使用的是.NET 4.0或更高版本，以便能够添加该引用。”-krs013 2月5日6:05