Picture Control File Name Extract

nsdolic — Tue, 27 Apr 2010 14:32:07 GMT

Hi I am having following problem. In my form I have a picture control. After picture is inserted I need to know where this picture came from. (Here only file name would be sufficient).

Sofar, I have built a form with attachment control and using base64 encoder/ decoder I was able to extract file name. When I change attachment control to picture control I am getting Out of Memory Exeption.

How can I extract name of a picure inserted into picture control? Bellow is Decoder code I am using Thank you very much. using System;using System.IO;using System.Text; namespace InfoPathAttachmentEncoding{ /// <summary> /// Decodes a file attachment and saves it to a specified path. /// </summary> public class InfoPathAttachmentDecoder { private const int SP1Header_Size = 20; private const int FIXED_HEADER = 16; private int fileSize; private int attachmentNameLength; private string attachmentName; private byte[] decodedAttachment; /// <summary> /// Accepts the Base64 encoded string /// that is the attachment. /// </summary> public InfoPathAttachmentDecoder(string theBase64EncodedString) { byte[] theData = Convert.FromBase64String(theBase64EncodedString); using (MemoryStream ms = new MemoryStream(theData)) { BinaryReader theReader = new BinaryReader(ms); DecodeAttachment(theReader); } } private void DecodeAttachment(BinaryReader theReader) { //Position the reader to get the file size. byte[] headerData = new byte[FIXED_HEADER]; headerData = theReader.ReadBytes(headerData.Length); fileSize = (int)theReader.ReadUInt32(); attachmentNameLength = (int)theReader.ReadUInt32() * 2; byte[] fileNameBytes = theReader.ReadBytes(attachmentNameLength); //InfoPath uses UTF8 encoding. Encoding enc = Encoding.Unicode; attachmentName = enc.GetString(fileNameBytes, 0, attachmentNameLength - 2); decodedAttachment = theReader.ReadBytes(fileSize); } public string Filename { get { return attachmentName; } } public byte[] DecodedAttachment { get { return decodedAttachment; } } }}

General

Picture Control File Name Extract