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】
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 | 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) { } private Uri getUrl(string address) { string tempaddress = address; if ((!address.StartsWith("http://")) && (!address.StartsWith("https://")) && (!address.StartsWith("ftp://"))) { } 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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