实例介绍
【实例简介】
C#抓取整个网站为一个图片
【实例截图】
截图效果如下：
【核心代码】
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
//********************************
public struct RECT
{
public int Left;
public int Top;
public int Right;
public int Bottom;
}
[DllImport("gdi32")]
public static extern int SelectObject(int hdc, int hObject);
[DllImport("gdi32")]
public static extern int CreateDC(string lpDriverName, string lpDeviceName, string lpOutput, int lpInitData);
[DllImport("gdi32")]
public static extern int CreateCompatibleDC(int hdc);
[DllImport("gdi32")]
public static extern int CreateCompatibleBitmap(int hdc, int nWidth, int nHeight);
[DllImport("user32")]
public static extern int GetWindow(int hwnd,int wCmd);
[DllImport("user32")]
public static extern int GetClassNameA(int hwnd,string lpClassName,int nMaxCount);
[DllImport("user32")]
private static extern int GetWindowRect(IntPtr hwnd,ref RECT lpRect);
[DllImport("gdi32")]
public static extern int BitBlt(int hDestDC,int x,int y,int nWidth,int nHeight,int hSrcDC,int xSrc,int ySrc,int dwRop);
[DllImport("user32")]
public static extern int OpenClipboard(IntPtr hwnd);
[DllImport("user32")]
public static extern int EmptyClipboard();
[DllImport("user32")]
public static extern int SetClipboardData(int wFormat,int hMem);
[DllImport("user32")]
public static extern int CloseClipboard();
int DestDC;
int SourceDC;
int Bhandle;
IntPtr winpoint;
RECT Rectangles;
bool flag = false;
//*******************************
private void toolStripButton4_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void toolStripButton3_Click(object sender, EventArgs e)
{
System.Diagnostics.Process.Start("http://www.mingribook.com");
}
private Uri getUrl(string address)
{
string tempaddress = address;
if ((!address.StartsWith("http://")) && (!address.StartsWith("https://")) && (!address.StartsWith("ftp://")))
{
tempaddress = "http://" address;
}
Uri myurl;
try
{
myurl = new Uri(tempaddress);
}
catch
{
myurl = new Uri("about:blank");
}
return myurl;
}
private void toolStripButton1_Click(object sender, EventArgs e)
{
string strUrl = tstbURL.Text.Trim();
webBrowser1.Navigate(getUrl(strUrl));
tstbURL.Text =Convert.ToString(getUrl(strUrl));
tsslStatus.Text = tstbURL.Text;
flag = true;
}
private void tstbURL_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
{
toolStripButton1_Click(sender, e);
}
}
private void inputHide()
{
toolStrip1.Focus();
}
private void Snapweb()
{
this.TopMost = true;
SelectObject(DestDC, Bhandle);
int linewidth=0;
int lineheight=0;
int i=0;
int j=0;
winpoint = webBrowser1.Handle;
GetWindowRect(winpoint,ref Rectangles);
webBrowser1.Document.Body.ScrollTop = 0;
while (lineheight < webBrowser1.Document.Body.ScrollRectangle.Height - 199)
{
if (webBrowser1.Document.Body.ScrollTop == 0)
{
inputHide();
BitBlt(DestDC, 0, 0, webBrowser1.Document.Body.ClientRectangle.Width, webBrowser1.Document.Body.ClientRectangle.Height, SourceDC, Rectangles.Left, Rectangles.Top, 13369376);//获取可见区域场景
linewidth = webBrowser1.Document.Body.ClientRectangle.Width 5; //赋值宽
if (linewidth < webBrowser1.Document.Body.ScrollRectangle.Width)
{
while (linewidth < webBrowser1.Document.Body.ScrollRectangle.Width - 199)
{
inputHide();
webBrowser1.Document.Body.ScrollLeft = 199;
BitBlt(DestDC, webBrowser1.Document.Body.ClientRectangle.Width 199 * j, 0, 199, webBrowser1.Document.Body.ClientRectangle.Height, SourceDC, Rectangles.Left webBrowser1.Document.Body.ClientRectangle.Width - 199, Rectangles.Top, 13369376);
linewidth = linewidth 199;
j = j 1;
}
if (linewidth >= webBrowser1.Document.Body.ScrollRectangle.Width - 199)
{
inputHide();
webBrowser1.Document.Body.ScrollLeft = 199;
BitBlt(DestDC, webBrowser1.Document.Body.ClientRectangle.Width 199 * j, 0, webBrowser1.Document.Body.ScrollRectangle.Width - linewidth, webBrowser1.Document.Body.ClientRectangle.Height, SourceDC, Rectangles.Left webBrowser1.Document.Body.ClientRectangle.Width - (webBrowser1.Document.Body.ScrollRectangle.Width - linewidth), Rectangles.Top, 13369376);
webBrowser1.Document.Body.ScrollLeft= 0;
j = 0;
}
}
lineheight = lineheight webBrowser1.Document.Body.ClientRectangle.Height;
}
else
{
inputHide();
BitBlt(DestDC, 0, webBrowser1.Document.Body.ClientRectangle.Height 199 * i, webBrowser1.Document.Body.ClientRectangle.Width, 199, SourceDC, Rectangles.Left, Rectangles.Top webBrowser1.Document.Body.ClientRectangle.Height - 199, 13369376);//获取可见区域场景
linewidth = webBrowser1.Document.Body.ClientRectangle.Width;//当前宽度
if (linewidth < webBrowser1.Document.Body.ScrollRectangle.Width)
{
while (linewidth < webBrowser1.Document.Body.ScrollRectangle.Width-199)
{
inputHide();
webBrowser1.Document.Body.ScrollLeft = 199;
BitBlt(DestDC, webBrowser1.Document.Body.ClientRectangle.Width 199 * j, webBrowser1.Document.Body.ClientRectangle.Height 199 * i, webBrowser1.Document.Body.ClientRectangle.Width, 199, SourceDC, Rectangles.Left webBrowser1.Document.Body.ClientRectangle.Width - 199, Rectangles.Top webBrowser1.Document.Body.ClientRectangle.Height - 199, 13369376);
linewidth = linewidth 199;
j = j 1;
}
if(linewidth >=webBrowser1.Document.Body.ScrollRectangle.Width-199)
{
inputHide();
webBrowser1.Document.Body.ScrollLeft =199;
BitBlt(DestDC, webBrowser1.Document.Body.ClientRectangle.Width 199 * j, webBrowser1.Document.Body.ClientRectangle.Height 199 * i, webBrowser1.Document.Body.ScrollRectangle.Width - linewidth, 199, SourceDC, Rectangles.Left webBrowser1.Document.Body.ClientRectangle.Width - (webBrowser1.Document.Body.ScrollRectangle.Width - linewidth), Rectangles.Top webBrowser1.Document.Body.ClientRectangle.Height - 199, 13369376);
webBrowser1.Document.Body.ScrollLeft=0;
j = 0;
}
}
i = i 1;//纵向计数器累计
lineheight = lineheight 199;
}
webBrowser1.Document.Body.ScrollTop =199;//调整纵向滚动条位置
}
if (lineheight >= webBrowser1.Document.Body.ScrollRectangle.Height - 199)
{
inputHide();
BitBlt(DestDC, 0, webBrowser1.Document.Body.ClientRectangle.Height 199 * i, webBrowser1.Document.Body.ClientRectangle.Width, (webBrowser1.Document.Body.ScrollRectangle.Height - lineheight), SourceDC, Rectangles.Left, Rectangles.Top webBrowser1.Document.Body.ClientRectangle.Height - (webBrowser1.Document.Body.ScrollRectangle.Height - lineheight), 13369376);
linewidth = webBrowser1.Document.Body.ClientRectangle.Width;
if(linewidth < webBrowser1.Document.Body.ScrollRectangle.Width)
{
while(linewidth<webBrowser1.Document.Body.ScrollRectangle.Width-199)
{
inputHide();
webBrowser1.Document.Body.ScrollLeft =199;
BitBlt(DestDC, webBrowser1.Document.Body.ClientRectangle.Width 199 * j, webBrowser1.Document.Body.ClientRectangle.Height 199 * i, webBrowser1.Document.Body.ClientRectangle.Width, (webBrowser1.Document.Body.ScrollRectangle.Height - lineheight), SourceDC, Rectangles.Left webBrowser1.Document.Body.ClientRectangle.Width - 199, Rectangles.Top webBrowser1.Document.Body.ClientRectangle.Height - (webBrowser1.Document.Body.ScrollRectangle.Height - lineheight), 13369376);
linewidth = linewidth 199;
j = j 1;
}
if(linewidth >=webBrowser1.Document.Body.ScrollRectangle.Width-199)
{
inputHide();
webBrowser1.Document.Body.ScrollLeft =199;
BitBlt(DestDC, webBrowser1.Document.Body.ClientRectangle.Width 199 * j, webBrowser1.Document.Body.ClientRectangle.Height 199 * i, webBrowser1.Document.Body.ScrollRectangle.Width - linewidth, (webBrowser1.Document.Body.ScrollRectangle.Height - lineheight), SourceDC, Rectangles.Left webBrowser1.Document.Body.ClientRectangle.Width - (webBrowser1.Document.Body.ScrollRectangle.Width - linewidth), Rectangles.Top webBrowser1.Document.Body.ClientRectangle.Height - (webBrowser1.Document.Body.ScrollRectangle.Height - lineheight), 13369376);
webBrowser1.Document.Body.ScrollLeft=0;
}
}
i=0;
OpenClipboard(this.Handle);
EmptyClipboard();
SetClipboardData(2,Bhandle);
CloseClipboard();
Image ig = (Image)Clipboard.GetImage();
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
string path = saveFileDialog1.FileName;
ig.Save(path);
MessageBox.Show("保存成功","提示",MessageBoxButtons.OK,MessageBoxIcon.Exclamation);
webBrowser1.Document.Body.ScrollTop = 0;
ig.Dispose();
}
}
}
private void toolStripButton2_Click(object sender, EventArgs e)
{
if (flag)
{
Snapweb();
}
}
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
SourceDC = CreateDC("DISPLAY", "0", "0", 0);
DestDC = CreateCompatibleDC(SourceDC);
Bhandle = CreateCompatibleBitmap(SourceDC, webBrowser1.Document.Body.ScrollRectangle.Width, webBrowser1.Document.Body.ScrollRectangle.Height);
}
private void Form1_Load(object sender, EventArgs e)
{
}
}
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