Code
<Head runat = "server"> <SCRIPT type = "text/JavaScript" src = "script/jquery-1.3.2-vsdoc2.js"> SCRIPT> <link href = "CSS/btn.css" type = "Text /CSS "rel =" stylesheet "/> <title> head> <body> <Form ID =" form1 "runat =" server "> <div> <asp: fileupload id = "fileup" runat = "server" cssclass = "green1"/> <asp: button id = "btnup" runat = "server" text = "Upload" cssclass = "green1" onclick = "btnup_click"/> <br/> <asp: panel id = "Panel1" runat = "server"> Asp: Panel> <asp: image id = "imshow" runat = "server" imageurl = "images/3f76deb8623b1.jpg" width = "300px"/> div> <SCRIPT type = "text/JavaScript"> var $ ur = $ ("# imshow "). ATTR ("src") $ ("image [SRC * = 'ico ']"). hover (function () {var $ url = $ (this ). ATTR ("src"); $ ("# imshow "). ATTR ("src", $ URL) ;}, function () {$ ("# imshow "). ATTR ("src", $ ur) ;}; SCRIPT> form> body> HTML>
Code
Public void queryico () {string Path = server. mappath ("~ /Images "); directoryinfo dirinfo = new directoryinfo (server. mappath ("~ /ICO "); fileinfo [] files = dirinfo. getfiles ("*. jpg "); foreach (fileinfo file in files) {system. web. UI. webcontrols. image im = new system. web. UI. webcontrols. image (); Im. imageurl = "ICO/" + file. name; this. panel1.controls. add (IM); If (panel1.controls. count % 4 = 0) {// wrap this dynamically in the panel. panel1.controls. add (New literalcontrol ("") ;}} protected void btnup_click (Object sender, eventargs e) {// get the upload path St Ring Path = server. mappath ("images/"); // obtain the application virtual path // string path1 = applicationpath + "/images/"; string path2 = server. mappath ("~ /ICO/"); string type = system. Io. Path. getextension (fileup. filename). tolower (); If (fileup. hasfile) {If (type! = ". Jpg ") {response. write ("");} else {string filename = This. fileup. filename; If (fileup. postedfile. contentlength> 1024*2*1024) {response. write ("");} else {fileup. saveas (path + fileup. filename); this. imshow. imageurl = "images/" + fileup. filename; makesmallimg (fileup. postedfile. inputstream, path2 + filename, 100,200); // response. write (""); queryico () ;}}// generate a thumbnail Based on the template ratio (obtain the source file as a stream) // generate a thumbnail function // sequence parameters: source image file stream, thumbnail storage address, template width, template height // note: the thumbnail size is controlled in the template area public static void makesmallimg (system. io. stream fromfilestream, string filesaveurl, system. double templatewidth, system. double templateheight) {// obtain the image object from the file and use the color management information embedded in the stream system. drawing. image myimage = system. drawing. image. fromstream (fromfilestream, true); // system with thumbnail width and height. double newwidth = myimage. width, newheight = myimage. height; // If (myimage. width> myimage. height | myimage. width = myimage. height) {If (myimage. width> templatewidth) {// width: Based on the template, and height: proportional Scaling: newwidth = templatewidth; newheight = myimage. height * (newwidth/myimage. width) ;}}// the vertical figure else {If (myimage. height> templateheight) {// The height is based on the template, and the width is scaled proportionally. newheight = templateheight; newwidth = myimage. width * (newheight/myimage. height) ;}// obtain the image size system. drawing. size mysize = new size (INT) newwidth, (INT) newheight); // create a BMP image system. drawing. image bitmap = new system. drawing. bitmap (mysize. width, mysize. height); // create a canvas system. drawing. graphics G = system. drawing. graphics. fromimage (Bitmap); // set the high quality interpolation method G. interpolationmode = system. drawing. drawing2d. interpolationmode. high; // set high quality, low speed rendering smoothness G. smoothingmode = system. drawing. drawing2d. smoothingmode. highquality; // clear the canvas G. clear (color. white); // draw at the specified position G. drawimage (myimage, new system. drawing. rectangle (0, 0, bitmap. width, bitmap. height), new system. drawing. rectangle (0, 0, myimage. width, myimage. height), system. drawing. graphicsunit. pixel); // text watermark // system. drawing. graphics G = system. drawing. graphics. fromimage (Bitmap); // system. drawing. font F = new font ("", 10); // system. drawing. brush B = new solidbrush (color. black); // G. drawstring ("myohmine", F, B, 10, 10); // G. dispose (); // image watermark // system. drawing. image copyimage = system. drawing. image. fromfile (system. web. httpcontext. current. server. mappath ("PIC/1.gif"); // graphics A = graphics. fromimage (Bitmap); //. drawimage (copyimage, new rectangle (bitmap. width-copyImage.Width, bitmap. height-copyImage.Height, copyimage. width, copyimage. height), 0, 0, copyimage. width, copyimage. height, graphicsunit. pixel); // copyimage. dispose (); //. dispose (); // copyimage. dispose (); // Save the thumbnail bitmap. save (filesaveurl, system. drawing. imaging. imageformat. JPEG); G. dispose (); myimage. dispose (); bitmap. dispose ();}
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