Make the upload function a page and use IFRAME to directly call the page to be uploaded:
Call Page code:
<! Doctype HTML public "-// W3C // dtd xhtml 1.0 transitional // en" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <HTML xmlns = "http://www.w3.org/1999/xhtml">
The principle is as follows: first load the uploaded image, create a canvas (Bitmap) based on the image as the background, and then create a drawing layer (graphics) on the canvas ), then draw the specified word, color, and position on the layer. after the words are painted, they are regenerated into a new name. Then, they are saved to the image with the new name, and the original image is deleted. and return the path of the latest image to the call page. OK!
Upfile. aspx. csusing system; using system. collections; using system. configuration; using system. data; using system. web; using system. web. security; using system. web. ui; using system. web. UI. htmlcontrols; using system. web. UI. webcontrols; using system. web. UI. webcontrols. webparts; using system. io; public partial class admin_upfile: system. web. UI. page {protected void page_load (Object sender, eventargs e) {} protec Ted void button#click (Object sender, eventargs e) {If (request. querystring ["ID"] = NULL | request. querystring ["ID"] = "") {response. write ("<SCRIPT> alert (\" parameter error! \ "); Location. href = 'upfile. aspx '; </SCRIPT>"); response. End () ;}if (fileupload1.postedfile! = NULL) {string filename; // file name string newname; string newpathurl; filename = fileupload1.postedfile. filename; string exten = path. getextension (filename ). tolower (); // The extension if (exten! = ". GIF" & exten! = ". Jpg" & exten! = ". Jpeg" & exten! = ". BMP ") // determine the file type {response. write ("<SCRIPT> alert ('images only support -- GIF | JPG | JPEG | BMP '); location. href = 'upfile. aspx '; </SCRIPT> "); response. end ();} newname = sjname () + ". "+ exten; // new name: String pathurl; pathurl = server. mappath ("~ ") +" \ Uploadfile \ "+ newname; // file storage path string kb = fileupload1.filecontent. length. tostring (); // file size unit: byte fileupload1.postedfile. saveas (pathurl); If (checkbox1.checked) // If a watermark is added {try {using (system. drawing. bitmap Bm = new system. drawing. bitmap (pathurl) // create an image as the background canvas {using (system. drawing. graphics G = system. drawing. graphics. fromimage (BM) // create a layer on the canvas {G. drawstring ("Image Source (www. xiaojiang-de Sign.com) ", new system. drawing. font ("", 15), system. drawing. brushes. yellow, BM. width-350, BM. height-50); // draw the word} newname = sjname () + ". "+ exten; // The new name newpathurl = server. mappath ("~ ") +" \ Uploadfile \ "+ newname; // file storage path BM. save (newpathurl); // Save the image BM with the watermark added. dispose ();} If (file. exists (pathurl) {file. delete (pathurl); // Delete the source image} catch {} response. write ("<SCRIPT> parent.doc ument. form1. "+ request. querystring ["ID"]. tostring () + ". value = '/uploadfile/"+ newname +"'; </SCRIPT> "); // pass the new file path after the upload is successful to the control passed by the parent page }}/// <summary> /// generate a prompt name /// </Summary >/// <returns> </returns> Public String sjname () {string SJ = NULL; SJ = datetime. now. year. tostring () + datetime. now. month. tostring () + datetime. now. day. tostring () + datetime. now. timeofday. hours. tostring () + datetime. now. timeofday. minutes. tostring () + datetime. now. timeofday. milliseconds. tostring (); Return SJ ;}}
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
