PROMS/VEPROMS.CSLA.Library/Extension/DocumentExt.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.IO;
+
+namespace VEPROMS.CSLA.Library
+{
+	public partial class DocumentInfo
+	{
+		public string DocumentTitle
+		{
+			get
+			{
+				if (_LibTitle == "") return string.Format("Document {0}", _DocID);
+				return _LibTitle;
+			}
+		}
+	}
+	public class DSOFile : IDisposable
+	{
+		private static readonly log4net.ILog _MyLog = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
+		#region Fields
+		private bool _IsDisposed;
+		private static string _TemporaryFolder = null;
+		private DocumentInfo _MyDocument = null;
+		private FileInfo _MyFile = null;
+		private string _Extension = "DOC";
+		#endregion
+		#region Properties
+		public static string TemporaryFolder
+		{
+			get
+			{
+				if (_TemporaryFolder == null)
+				{
+					_TemporaryFolder = string.Format(@"C:\Documents and Settings\{0}\Local Settings\Temp", Environment.UserName);
+					if (!Directory.Exists(TemporaryFolder)) Directory.CreateDirectory(TemporaryFolder);
+					_TemporaryFolder += @"\VE-PROMS";
+					if (!Directory.Exists(TemporaryFolder)) Directory.CreateDirectory(TemporaryFolder);
+				}
+				return _TemporaryFolder;
+			}
+		}
+		public DocumentInfo MyDocument
+		{
+			get { return _MyDocument; }
+			set
+			{
+				TryDelete();
+				_MyDocument = value;
+				CreateFile();
+			}
+		}
+		public FileInfo MyFile
+		{
+			get { return _MyFile; }
+		}
+		public string Extension
+		{
+			get { return _Extension; }
+			set { _Extension = value; }
+		}
+		#endregion
+		#region Private Methods
+		private void TryDelete()
+		{
+			if (_MyDocument == null) return;
+			if (_MyFile == null) return;
+			if (_MyFile.Exists)
+			{
+				try
+				{
+					_MyFile.Delete();
+				}
+				catch (IOException ex)
+				{
+					_MyLog.Error("TryDelete",ex);
+				}
+				finally
+				{
+					_MyFile = null;
+					_MyDocument = null;
+				}
+			}
+		}
+		private void CreateFile()
+		{
+			if (_MyDocument == null) return;
+			_MyFile = new FileInfo(string.Format(@"{0}\tmp_{1}." + Extension , TemporaryFolder, MyDocument.DocID));
+			FileStream fs = _MyFile.Create();
+			fs.Write(MyDocument.DocContent, 0, MyDocument.DocContent.Length);
+			fs.Close();
+			_MyFile.CreationTime = _MyDocument.DTS;
+			_MyFile.LastWriteTime = _MyDocument.DTS;
+		}
+		public void SaveFile()
+		{
+			// TODO: Add Try & Catch logic
+			if (_MyDocument == null) return;
+			Document doc = _MyDocument.Get();
+			FileStream fs = _MyFile.Open(FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
+			Byte[] buf = new byte[_MyFile.Length];
+			fs.Read(buf,0,buf.Length);
+			fs.Close();
+			doc.DocContent = buf;
+			doc.UserID = Environment.UserName;
+			doc.DTS = _MyFile.LastWriteTime;
+			doc.Save();
+		}
+		#endregion
+		#region Constructors
+		public DSOFile(DocumentInfo myDocument)
+		{
+			MyDocument = myDocument;
+		}
+		#endregion
+		#region Destructor
+		~DSOFile()
+		{
+			Dispose(false);
+		}
+		public void Dispose()
+		{
+			Dispose(false);
+			GC.SuppressFinalize(this);
+		}
+
+		protected void Dispose(bool disposing)
+		{
+			if (!_IsDisposed)
+			{
+				_IsDisposed = true;
+				TryDelete();
+			}
+		}
+		#endregion
+	}
+}