我正在开发一个项目,一个 Web Bot,它使用 WebBrowser 控件。
我的目标是以编程方式在加载的 Web 浏览器中的所需元素上打开 Web 浏览器上下文菜单,然后从上下文菜单中选择一个选项。
Example:
在 WebBrowser 控件中导航到 Google。
打开上下文菜单。选择“显示图片”
到目前为止,这是我设法找到的最接近的代码Here :
foreach (MenuItem vMenuItem in WebBrowser.ContextMenu.MenuItems)
{
if (vMenuItem.Text.Contains("onwert") && vMenuItem.Text.Contains("PDF"))
{
vMenuItem.PerformClick();
}
}
到目前为止,此代码在第一行返回错误,这里有解决方案吗?
工作替代方案:
到目前为止,我已经通过模拟点击成功实现了这一点,问题是当窗口隐藏时会出现明显的错误。另外,我不希望光标在屏幕上跳跃。如果有一种方法可以模拟隐藏窗口上的点击,那么它可能是这里的一个解决方案。
这是我当前模拟点击的代码:(虽然我不希望使用模拟点击,但此代码有效)
Point controlLoc = this.PointToScreen(webbrowser1.Location);
controlLoc.X = controlLoc.X + webbrowser1.Document.GetElementById("sbvdcapimg").OffsetRectangle.Left+65;
controlLoc.Y = controlLoc.Y + webbrowser1.Document.GetElementById("sbvdcapimg").OffsetRectangle.Top+50;
Cursor.Position = controlLoc;
MouseSimulator.ClickRightMouseButton();
controlLoc.X = controlLoc.X + (webbrowser1.Document.GetElementById("sbvdcapimg").OffsetRectangle.Left + 95);
controlLoc.Y = controlLoc.Y + (webbrowser1.Document.GetElementById("sbvdcapimg").OffsetRectangle.Top + 45);
Cursor.Position = controlLoc;
MouseSimulator.ClickLeftMouseButton();
public class MouseSimulator
{
[DllImport("user32.dll", SetLastError = true)]
static extern uint SendInput(uint nInputs, ref INPUT pInputs, int cbSize);
[StructLayout(LayoutKind.Sequential)]
struct INPUT
{
public SendInputEventType type;
public MouseKeybdhardwareInputUnion mkhi;
}
[StructLayout(LayoutKind.Explicit)]
struct MouseKeybdhardwareInputUnion
{
[FieldOffset(0)]
public MouseInputData mi;
[FieldOffset(0)]
public KEYBDINPUT ki;
[FieldOffset(0)]
public HARDWAREINPUT hi;
}
[StructLayout(LayoutKind.Sequential)]
struct KEYBDINPUT
{
public ushort wVk;
public ushort wScan;
public uint dwFlags;
public uint time;
public IntPtr dwExtraInfo;
}
[StructLayout(LayoutKind.Sequential)]
struct HARDWAREINPUT
{
public int uMsg;
public short wParamL;
public short wParamH;
}
struct MouseInputData
{
public int dx;
public int dy;
public uint mouseData;
public MouseEventFlags dwFlags;
public uint time;
public IntPtr dwExtraInfo;
}
[Flags]
enum MouseEventFlags : uint
{
MOUSEEVENTF_MOVE = 0x0001,
MOUSEEVENTF_LEFTDOWN = 0x0002,
MOUSEEVENTF_LEFTUP = 0x0004,
MOUSEEVENTF_RIGHTDOWN = 0x0008,
MOUSEEVENTF_RIGHTUP = 0x0010,
MOUSEEVENTF_MIDDLEDOWN = 0x0020,
MOUSEEVENTF_MIDDLEUP = 0x0040,
MOUSEEVENTF_XDOWN = 0x0080,
MOUSEEVENTF_XUP = 0x0100,
MOUSEEVENTF_WHEEL = 0x0800,
MOUSEEVENTF_VIRTUALDESK = 0x4000,
MOUSEEVENTF_ABSOLUTE = 0x8000
}
enum SendInputEventType : int
{
InputMouse,
InputKeyboard,
InputHardware
}
public static void ClickRightMouseButton()
{
INPUT mouseDownInput = new INPUT();
mouseDownInput.type = SendInputEventType.InputMouse;
mouseDownInput.mkhi.mi.dwFlags = MouseEventFlags.MOUSEEVENTF_RIGHTDOWN;
SendInput(1, ref mouseDownInput, Marshal.SizeOf(new INPUT()));
INPUT mouseUpInput = new INPUT();
mouseUpInput.type = SendInputEventType.InputMouse;
mouseUpInput.mkhi.mi.dwFlags = MouseEventFlags.MOUSEEVENTF_RIGHTUP;
SendInput(1, ref mouseUpInput, Marshal.SizeOf(new INPUT()));
}
public static void ClickLeftMouseButton()
{
INPUT mouseDownInput = new INPUT();
mouseDownInput.type = SendInputEventType.InputMouse;
mouseDownInput.mkhi.mi.dwFlags = MouseEventFlags.MOUSEEVENTF_LEFTDOWN;
SendInput(1, ref mouseDownInput, Marshal.SizeOf(new INPUT()));
INPUT mouseUpInput = new INPUT();
mouseUpInput.type = SendInputEventType.InputMouse;
mouseUpInput.mkhi.mi.dwFlags = MouseEventFlags.MOUSEEVENTF_LEFTUP;
SendInput(1, ref mouseUpInput, Marshal.SizeOf(new INPUT()));
}
是否有办法通过调用 WebBrowsers ContextMenu 来执行此过程...?!
Bump.