我想截取一个网页的截图。我尝试了很多东西，但它们适用于Windows Forms，我使用的是WebForms和C＃。搜索但没有找到。我申请了：
1
private void CaptureMy()
{
int xheight = 822; int xwidth = 479;
try
{
string StatePath = "Document\\Metro\\Test12.png";
String filepath = Server.MapPath(StatePath);
Bitmap captureBitmap = new Bitmap(xheight, xwidth, PixelFormat.Format32bppArgb);
System.Drawing.Rectangle captureRectangle = Screen.AllScreens[0].Bounds;//capture our Current Screen
Graphics captureGraphics = Graphics.FromImage(captureBitmap); //Creating a New Graphics Object
captureGraphics.CopyFromScreen(182, 207, 0, 0, captureRectangle.Size); //Copying Image from The Screen
ScriptManager.RegisterStartupScript(this, this.GetType(), "Message", "alert(' successfully saved.');", true);
string Type = Convert.ToString(ViewState["Type"]);
captureBitmap.Save(filepath, ImageFormat.Jpeg); //Saving the Image File
}
catch (Exception ex)
{
}
}
2
public void capscreen_test()
{
System.Drawing.Image img = FullScreen();
String path = Server.MapPath("Document/Test13.png");
string imageFile = @"\Exceptions\ExceptionLog" + DateTime.Now.ToString("MMddyyyy-hhmmss") + ".jpg";
img.Save(path);
}
public static Bitmap FullScreen()
{
return ScreenRectangle(SystemInformation.VirtualScreen);
}
public static Bitmap DisplayMonitor(System.Windows.Forms.Screen monitor)
{
System.Drawing.Rectangle rect;
try
{
rect = monitor.Bounds;
}
catch (Exception ex)
{
throw new ArgumentException("Invalid parameter.", "monitor", ex);
}
return ScreenRectangle(monitor.Bounds);
}
public static Bitmap ActiveWindow()
{
IntPtr hwnd;
Win32.RECT wRect = new Win32.RECT();
hwnd = Win32.GetForegroundWindow();
if (hwnd != IntPtr.Zero)
{
if (Win32.GetWindowRect(hwnd, ref wRect))
{
System.Drawing.Rectangle rect = new System.Drawing.Rectangle(wRect.Left, wRect.Top, wRect.Right - wRect.Left, wRect.Bottom - wRect.Top);
return ScreenRectangle(rect);
}
else
{
throw new System.ComponentModel.Win32Exception();
}
}
else
{
throw new Exception("Could not find any active window.");
}
}
public static Bitmap Window(IntPtr hwnd)
{
Win32.RECT wRect = new Win32.RECT();
if (hwnd != IntPtr.Zero)
{
if (Win32.GetWindowRect(hwnd, ref wRect))
{
System.Drawing.Rectangle rect = new System.Drawing.Rectangle(wRect.Left, wRect.Top, wRect.Right - wRect.Left, wRect.Bottom - wRect.Top);
return ScreenRectangle(rect);
}
else
{
throw new System.ComponentModel.Win32Exception();
}
}
else
{
throw new ArgumentException("Invalid window handle.", "hwnd");
}
}
public static Bitmap Control(Point p)
{
IntPtr hwnd;
Win32.RECT wRect = new Win32.RECT();
hwnd = Win32.WindowFromPoint(p);
if (hwnd != IntPtr.Zero)
{
if (Win32.GetWindowRect(hwnd, ref wRect))
{
System.Drawing.Rectangle rect = new System.Drawing.Rectangle(wRect.Left, wRect.Top, wRect.Right - wRect.Left, wRect.Bottom - wRect.Top);
return ScreenRectangle(rect);
}
else
{
throw new System.ComponentModel.Win32Exception();
}
}
else
{
throw new Exception("Could not find any window at the specified point.");
}
}
public static Bitmap Control(IntPtr hwnd)
{
Win32.RECT wRect = new Win32.RECT();
if (hwnd != IntPtr.Zero)
{
if (Win32.GetWindowRect(hwnd, ref wRect))
{
System.Drawing.Rectangle rect = new System.Drawing.Rectangle(wRect.Left, wRect.Top, wRect.Right - wRect.Left, wRect.Bottom - wRect.Top);
return ScreenRectangle(rect);
}
else
{
throw new System.ComponentModel.Win32Exception();
}
}
else
{
throw new ArgumentException("Invalid control handle.", "hwnd");
}
}
public static Bitmap ScreenRectangle(System.Drawing.Rectangle rect)
{
if (!(rect.IsEmpty) && rect.Width != 0 && rect.Height != 0)
{
System.ComponentModel.Win32Exception win32Ex = null;
IntPtr wHdc = Win32.GetDC(IntPtr.Zero);
if (wHdc == IntPtr.Zero)
{
throw new System.ComponentModel.Win32Exception();
}
Graphics g;
Bitmap img = new Bitmap(rect.Width, rect.Height);
img.MakeTransparent();
g = Graphics.FromImage(img);
IntPtr gHdc = g.GetHdc();
if (!(Win32.BitBlt(gHdc, 0, 0, rect.Width, rect.Height, wHdc, rect.X, rect.Y, Win32.SRCCOPY | Win32.CAPTUREBLT)))
{
win32Ex = new System.ComponentModel.Win32Exception();
}
g.ReleaseHdc(gHdc);
g.Dispose();
Win32.ReleaseDC(IntPtr.Zero, wHdc);
if (!(win32Ex == null))
{
throw win32Ex;
}
else
{
return img;
}
}
else
{
throw new ArgumentException("Invalid parameter.", "rect");
}
}
private class Win32
{
public const int CAPTUREBLT = 1073741824;
public const int BLACKNESS = 66;
public const int DSTINVERT = 5570569;
public const int MERGECOPY = 12583114;
public const int MERGEPAINT = 12255782;
public const int NOTSRCCOPY = 3342344;
public const int NOTSRCERASE = 1114278;
public const int PATCOPY = 15728673;
public const int PATINVERT = 5898313;
public const int PATPAINT = 16452105;
public const int SRCAND = 8913094;
public const int SRCCOPY = 13369376;
public const int SRCERASE = 4457256;
public const int SRCINVERT = 6684742;
public const int SRCPAINT = 15597702;
public const int WHITENESS = 16711778;
public const int HORZRES = 8;
public const int VERTRES = 10;
[StructLayout(LayoutKind.Sequential)]
public struct RECT
{
public int Left;
public int Top;
public int Right;
public int Bottom;
}
[DllImport("user32", SetLastError = true)]
public static extern bool GetWindowRect(IntPtr hWnd, ref RECT lpRect);
[DllImport("user32", SetLastError = true)]
public static extern int ReleaseDC(IntPtr hWnd, IntPtr hdc);
[DllImport("user32", SetLastError = true)]
public static extern IntPtr WindowFromPoint(Point pt);
[DllImport("user32", SetLastError = true)]
public static extern IntPtr GetForegroundWindow();
[DllImport("user32", SetLastError = true)]
public static extern IntPtr GetDC(IntPtr hwnd);
[DllImport("gdi32", SetLastError = true)]
public static extern int GetDeviceCaps(IntPtr hdc, int nIndex);
[DllImport("gdi32", SetLastError = true)]
public static extern bool BitBlt(IntPtr hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, IntPtr hdcSrc, int nXSrc, int nYSrc, uint dwRop);
}
3
private void SaveScreenShot()
{
try
{
string StatePath = "Document\\Metro\\error.png";
String filepath = Server.MapPath(StatePath);
MemoryStream ms = new MemoryStream();
FileStream fs;
string fname = Server.MapPath(StatePath);
Bitmap bmp = new Bitmap(1280, 1024);//Creating BMP object
Graphics gpx = Graphics.FromImage(bmp);//attaching Graphics
gpx.CopyFromScreen(0, 0, 0, 0, new Size(1280, 1024)); //Doing Copy from Screen to capture Client Scren
bmp.Save(ms, ImageFormat.Gif); //SAVING the BMP in the Memory stream MS
Byte[] buffer = ms.ToArray(); // changing the Memory Stream object to ms
ms.Flush(); //flushing the content in ms.
ms.Close(); //closing the stream
fs = new FileStream(fname, FileMode.Create, FileAccess.ReadWrite);
fs.Write(buffer, 0, Convert.ToInt32(buffer.Length));
fs.Dispose(); //Writing the Content in ”D://errorimg//error.gif”.
}
catch {
Exception ex;
}
}
这些都不起作用。它们在本地工作正常但不在服务器上工作。请建议我更好地完成任务。
答案 0 :(得分：0)
我使用过selenium浏览器自动化框架。一个例子：
IWebDriver driver = new InternetExplorerDriver();
driver.Navigate().GoToUrl("http://www.google.com");
Screenshot ss = ((ITakesScreenshot)driver).GetScreenshot();
ss.SaveAsFile("ss.png", System.Drawing.Imaging.ImageFormat.Png);
通常我会优先使用Firefox或Chrome，但那只是我。