About picture Conversions

Find a picture relative to a picture and convert it into a binary format

/// <summary>        ///Picture Conversion/// </summary>        /// <param name= "strpath" ></param>        /// <returns></returns>        Private byte[] Redyte (stringstrpath) {            byte[] bytes =NULL; Try{FileStream Fsmyfile=NULL; if(Directory.Exists (Server.MapPath (strpath))) {//read files in binary modeFsmyfile =NewFileStream (Server.MapPath (strpath), FileMode.OpenOrCreate, FileAccess.ReadWrite); }                Else{fsmyfile=NewFileStream (Server.MapPath (Savedir +"/default.jpg"), FileMode.OpenOrCreate, FileAccess.ReadWrite); }                                 //Create a binary data stream reader, and open file associationsBinaryReader Brmyfile =NewBinaryReader (Fsmyfile); //Reposition the file pointer to the beginning of the fileBrMyfile.BaseStream.Seek (0, Seekorigin.begin); Bytes=brmyfile.readbytes (Convert.ToInt32 (fsMyfile.Length.ToString ())); //close each of these new objectsBrmyfile.close (); }            Catch {                //read files in binary modeFileStream Fsmyfile =NewFileStream (Server.MapPath (Savedir +"/default.jpg"), FileMode.OpenOrCreate, FileAccess.ReadWrite); //Create a binary data stream reader, and open file associationsBinaryReader Brmyfile =NewBinaryReader (Fsmyfile); //Reposition the file pointer to the beginning of the fileBrMyfile.BaseStream.Seek (0, Seekorigin.begin); Bytes=brmyfile.readbytes (Convert.ToInt32 (fsMyfile.Length.ToString ())); //close each of these new objectsBrmyfile.close (); }            returnbytes; }

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Save pictures to local based on network path

/// <summary>        ///save URL picture to local/// </summary>        /// <param name= "url" ></param>        /// <param name= "Savepath" ></param>        Private stringSaveurlimage (stringURL) {            stringSavepath =""; Try{HttpWebRequest WebRequest=(HttpWebRequest) webrequest.create (URL); HttpWebResponse WebResponse=(HttpWebResponse) WebRequest.                GetResponse (); if(WebResponse. StatusCode = =Httpstatuscode.ok) {System.Drawing.Image Image=System.Drawing.Image.FromStream (WebResponse.                    GetResponseStream ()); Savepath= Savedir +"/"+ DateTime.Now.ToString ("yyyymmddhhmmssfffff") +". jpg"; Image. Save (Server.MapPath (Savepath)); //Save in local folderImage. Dispose ();//Freeing Resources                }            }            Catch { }            returnSavepath; }

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Save binary format picture to local

New System.IO.MemoryStream (imgdata);                 = System.Drawing.Image.FromStream (ms);                Img. Save (Savepath);

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Check if the file exists

Directory.Exists (Severdir)

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Reference: http://developer.51cto.com/art/200908/143612.htm

http://www.oschina.net/code/snippet_222150_15091

About picture Conversions