生成缩略图.docVIP

生成缩略图 using System; using System.Collections; using System.ComponentModel; using System.Data; using System.Drawing; using System.Web; using System.Web.SessionState; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls; using System.Drawing.Imaging; using ICON5.IncCommon; namespace ICON5.Pavement.Data { /// summary /// Summary description for General. /// /summary public class General { internal readonly string AllowExt = .jpe|.jpeg|.jpg|.png|.tif|.tiff|.bmp|.gif; static Hashtable htmimes=new Hashtable(); //定义一个枚举用来存放文件的信息 public enum File { FILE_SIZE , //大小 FILE_POSTNAME, // FILE_SYSNAME , FILE_ORGINNAME, FILE_PATH }; //构造函数 public General() { #region htmimes[.jpe]=image/jpeg; htmimes[.jpeg]=image/jpeg; htmimes[.jpg]=image/jpeg; htmimes[.png]=image/png; htmimes[.tif]=image/tiff; htmimes[.tiff]=image/tiff; htmimes[.bmp]=image/bmp; htmimes[.gif]=image/gif; #endregion } /// summary /// 上传文件通用函数，此方法为静态，系统任何时候均可调用。 /// /summary /// param name=file参数为页面的FILE控件对象/param /// returns/returns public static string[] UploadFile(HtmlInputFile file, string SaveFilePath) { string[] arr = new String[5]; //通过系统时间生成文件名，此功能可以封闭掉，不过中文长文件名支持的不好。 DateTime curNow = DateTime.Now; string FileName = curNow.Year.ToString(0000)+curNow.Month.ToString(00)+curNow.Day.ToString(00)+curNow.Hour.ToString(00)+curNow.Minute.ToString(00)+curNow.Second.ToString(00)+curNow.Millisecond.ToString(000); //DateTime.Now.ToString().Replace( ,).Replace(:,).Replace(-,); string FileOrginName = file.PostedFile.FileName.Substring(file.PostedFile.FileName.LastIndexOf(\\)+1); if(file.PostedFile.ContentLength=0) { return null; } string postFileName; try { int pos = file.PostedFile.FileName.LastIndexOf(.)+1; postFileName = file.PostedFile.FileName.Substring(pos,file.PostedFile.FileName.Length-pos); file.PostedFile.SaveAs(SaveFilePa