これは、webBrowser コントロールの ScrollRectangle のサイズに設定されたビットマップにウィンドウを (1 つずつ) コピーすることで実現できました。これは確かにこの目標を達成するための最も洗練された方法ではありませんが、誰かが使用できる場合に備えてコードを共有したいと思いました. ほとんどが機能しているものを取得したら、いくつかの引数を追加できるようになり、コマンド ラインからこのユーティリティを実行できるようになりました。
Executable_Path URL ファイル名
/// <summary>
/// This method is called to start the process of copying the webpage to the bitmap
/// this should be called after the page has fully loaded (use DocumentCompleted event to determine
/// if the page has completed loading if calling from the command line.)
/// </summary>
private void copyWebpageToImage()
{
//these two vars will house the current position in the bmp file (starting at 0,0)
int currXPosition = 0;
int currYPosition = 0;
//we need to set the height and width of our bitmap to the scrollrectangle of the webbrowser document object
int width = webBrowser1.Document.Body.ScrollRectangle.Width;
int height = webBrowser1.Document.Body.ScrollRectangle.Height;
//instantiate the bitmap
bm = new Bitmap(wd, ht);
//Instantiate our graphics object
Graphics gfx = Graphics.FromImage((Image)bm);
//this point is used throughout the process, and helps to determine where the form is at on the screen
Point formPoint = Form1.ActiveForm.Location;
formPoint.X = formPoint.X + webBrowser1.Location.X;
formPoint.Y = formPoint.Y + webBrowser1.Location.Y;
formPoint.X = formPoint.X + 8; //offsets for my form (may be different for yours)
formPoint.Y = formPoint.Y + 33; //offsets for my form
//begin our recursive call that will stop when it reaches the end of the page
copyEverythingToBitmap(bm, currXPosition, currYPosition, formPoint, gfx);
}
private void copyEverythingToBitmap(Bitmap bm, int currXPosition, int currYPosition, Point formPoint, Graphics gfx)
{
//check to see if currXPosition and currYPosition are both 0, if so we just began, call the zero copy method
if (currXPosition == 0 && currYPosition == 0)
{
performZeroCopy(bm, currXPosition, currYPosition, formPoint, gfx);
}
//if the current x position is less than the total width of the scrollrectangle - the width of the webbrowser,
//then we need to scroll the window, and copy the contents, y stays the same
else if (currXPosition < bm.Width - webBrowser1.Width)
{
AlterXPosition(bm, ref currXPosition, ref currYPosition, ref formPoint, gfx);
}
//if we are no longer at the zero, zero, and we cannot increase the x position anymore,
//then we need to scroll the window down and copy the contents, x is reset back to zero
else if(currYPosition < bm.Height - webBrowser1.Height)
{
currYPosition = currYPosition + webBrowser1.Height - 20;
currXPosition = 0;
performZeroCopy(bm, currXPosition, currYPosition, formPoint, gfx);
}
}
/// <summary>
/// The name of this method is slightly misleading. It inherently means that X is zero.
/// </summary>
private void performZeroCopy(Bitmap bm, int currXPosition, int currYPosition, Point formPoint, Graphics gfx)
{
webBrowser1.Document.Window.ScrollTo(currXPosition, currYPosition);
gfx.CopyFromScreen(formPoint, new Point(currXPosition, currYPosition), new Size(webBrowser1.Width - 20, webBrowser1.Height - 20));
if (currXPosition < bm.Width - webBrowser1.Width)
{
AlterXPosition(bm, ref currXPosition, ref currYPosition, ref formPoint, gfx);
}
else if(currYPosition < bm.Height - webBrowser1.Height)
{
currYPosition = currYPosition + webBrowser1.Height - 20;
currXPosition = 0;
performZeroCopy(bm, currXPosition, currYPosition, formPoint, gfx);
}
}
private void AlterXPosition(Bitmap bm, ref int currXPosition, ref int currYPosition, ref Point formPoint, Graphics gfx)
{
currXPosition = currXPosition + webBrowser1.Width - 20;
webBrowser1.Document.Window.ScrollTo(bm.Width - currXPosition, currYPosition);
gfx.CopyFromScreen(formPoint, new Point(bm.Width - currXPosition - 3, currYPosition), new Size(webBrowser1.Width - 20, webBrowser1.Height - 20));
if (currXPosition + webBrowser1.Width < bm.Width)
{
//we still have not traversed the full width of the page, call to alterxposition again...
}
else
{
copyEverythingToBitmap(bm, currXPosition, currYPosition, formPoint, gfx);
}
}
private void saveImageToFile(string p)
{
bm.Tag = DateTime.Now;
bm.Save(p, ImageFormat.Jpeg);
}