explorerdlg.cs

用C#写的FTP客户端

		protected void OnClickMenuMRU3 (object sender, System.EventArgs e)
		{
			string l_strFTPServer = m_arrMRUConn[2].FTPServer ;
			string l_strFTPUser = m_arrMRUConn[2].FTPUser;
			ConnectToFTPServer(l_strFTPServer,l_strFTPUser);
		}

		protected void OnClickMenuMRU2 (object sender, System.EventArgs e)
		{
			string l_strFTPServer = m_arrMRUConn[1].FTPServer ;
			string l_strFTPUser = m_arrMRUConn[1].FTPUser;
			ConnectToFTPServer(l_strFTPServer,l_strFTPUser);
		}

		protected void OnClickMenuMRU1 (object sender, System.EventArgs e)
		{
			string l_strFTPServer = m_arrMRUConn[0].FTPServer ;
			string l_strFTPUser = m_arrMRUConn[0].FTPUser;
			ConnectToFTPServer(l_strFTPServer,l_strFTPUser);
		}

		/*	Called from MRU List */
		private void ConnectToFTPServer(string l_strFTPServer,string l_strFTPUser){
			ConnectDlg dlg = new ConnectDlg(l_strFTPServer,l_strFTPUser,"");
			dlg.ShowDialog();
			if ( dlg.m_iDataFlag == 1 ) {
				/*	If OK is pressed then connect to FTP server */
				this.Cursor = Cursors.WaitCursor;
				m_strFTPAddress = dlg.m_strFTPServer;
				m_strFTPUser = dlg.m_strFTPUserID;
				m_strFTPPassword = dlg.m_strFTPPassword;
				m_labelTreeView.Text = "No Folders to display";
				m_labelTreeView.Refresh();
				statusBarPanel1.Text = "Connecting to " + m_strFTPAddress + ". Please wait...";
				m_statusBar.Refresh();
				int l_iRetval = m_FTPClient.Connect(m_strFTPAddress,m_strFTPUser,m_strFTPPassword);
				if ( l_iRetval == 0 ){
					string l_strError = m_FTPClient.GetLastError();
					this.Cursor = Cursors.Arrow;
					MessageBox.Show(l_strError,"FTP Explorer - Error",MessageBox.IconStop);
					m_bConnectedFlag = false;
					ToggleMenuItems(0);
					m_labelTreeView.Text = "Not connected";
					m_labelListView.Text = "";
					statusBarPanel1.Text = "";
					statusBarPanel2.Text = "";
					return ;
				}
				m_bConnectedFlag = true;
				ToggleMenuItems(1);
				statusBarPanel1.Text = "Connected to " + m_strFTPAddress;
				m_statusBar.Refresh();

				RefreshFolderView("ROOT","",m_tnRootNode);
				string l_strFile = m_FTPClient.m_strList;

				m_FTPClient.m_strList = "";
				
				/*	Disable all MRU Menu Items	*/
				EnableMRUList(false);
				this.Cursor = Cursors.Arrow;
			}
		}

		protected void OnClickConfigure (object sender, System.EventArgs e)
		{
			int l_iSend = 0 ,l_iRecv = 0;
			m_FTPClient.GetTimeOuts(out l_iSend,out l_iRecv);
			char l_chDataTransfer = m_FTPClient.DataTransferMode;
			ConfigureDlg dlg = new ConfigureDlg(l_chDataTransfer,l_iSend,l_iRecv,m_strLocalDirectory);
			if ( dlg.ShowDialog() == DialogResult.OK ) {
				l_chDataTransfer = dlg.m_chTransferMode;
				int l_iSendTimeOut = dlg.m_iSendTimeout;
				int l_iRecvTimeOut = dlg.m_iRecvTimeout;
				m_FTPClient.SetTimeOuts(l_iSendTimeOut,l_iRecvTimeOut);
				m_FTPClient.DataTransferMode = l_chDataTransfer;
				/*	TO BE REMOVED FROM PRODUCT	*/
				if ( l_chDataTransfer == 'B' ) {
					m_FTPClient.DataTransferMode = 'A';
					MessageBox.Show("Binary Mode data transfer is not supported in Beta 1 Release","FTP Explorer",MessageBox.IconInformation);
				}
				m_strLocalDirectory = dlg.m_strClientPath;
				statusBarPanel3.Text = m_strLocalDirectory;
			}
		}

		protected void OnAfterSelectFolderView (object sender, System.WinForms.TreeViewEventArgs e)
		{
			this.Cursor = Cursors.WaitCursor;
			//e.node.Nodes;
			TreeNode l_tempNode = e.node;
			if ( l_tempNode == m_tnRootNode ) {
				/*	If root node is clicked do not do anything */
				this.Cursor = Cursors.Arrow;
				return ;
			}
			/*	Clear all child nodes first */
			e.node.Nodes.Clear();

			/*	Populate Folder view */
			string l_strCurDir = l_tempNode.Text;
			string l_strFullPath = l_tempNode.FullPath;
			l_strFullPath = l_strFullPath.Replace('\\','/');
			RefreshFolderView(l_strFullPath,l_strCurDir,l_tempNode);
			this.Cursor = Cursors.Arrow;
			return;
		}

		protected void OnClickToolBar (object sender, System.WinForms.ToolBarButtonClickEventArgs e)
		{
			int l_iImageIndex = e.button.ImageIndex;
			switch ( l_iImageIndex ) {
				case 0 :
					OnClickConnect(sender,e);
					break;
				case 1 :
					OnClickDisconnect(sender,e);
					break;
				case 2 :
					OnClickConfigure(sender,e);
					break;
				case 3 :
					OnClickUploadFile(sender,e);
					break;
				case 4 :
					OnClickDownloadFile(sender,e);
					break;
				case 5 :
					OnClickRefresh(sender,e);
					break;
				case 6 :
					OnClickSystemInfo(sender,e);
					break;
				case 7 :
					OnClickAbout(sender,e);
					break;
				case 8 :
					OnClickExit(sender,e);
					break;
				default:
					break;
			}
		}

		protected void OnClickAbout (object sender, System.EventArgs e)
		{
			AboutDlg dlg = new AboutDlg();
			dlg.ShowDialog(this);
			return;
		}

		protected void OnClickSystemInfo (object sender, System.EventArgs e)
		{
			string l_strServerInfo = "";
			if ( m_bConnectedFlag == false ) {
				l_strServerInfo = "Not connected to any FTP Service";
			}
			else {
				int l_iOS = m_FTPClient.GetServerOS();
				if ( l_iOS == 0 ) {
					l_strServerInfo = "Unknown OS";
				}
				else if ( l_iOS == 1) {
					l_strServerInfo = "Connected to FTP Service on \n";
					l_strServerInfo += m_FTPClient.m_strServerType;
				}
				else if ( l_iOS == 2 ) {
					l_strServerInfo = "Connected to FTP Service on \n";
					l_strServerInfo += m_FTPClient.m_strServerType;
				}
				else if ( l_iOS == 3 ) {
					l_strServerInfo = "Unknown OS";
				}
			}
			SystemInfoDlg dlg = new SystemInfoDlg(l_strServerInfo);
			dlg.ShowDialog(this);
		}

		protected void OnClickRefresh (object sender, System.EventArgs e)
		{
			this.Cursor = Cursors.WaitCursor;
			/*	When refresh is clicked the populate the entire structure */
			RefreshFolderView("ROOT","",m_tnRootNode);
			this.Cursor = Cursors.Arrow;
		}

		protected void OnClickDownloadFile (object sender, System.EventArgs e)
		{
			
			bool l_bFocused = m_lvFileView.ContainsFocus;
			ListView.SelectedListItemCollection l_SelectedItemList = m_lvFileView.SelectedItems;

			/*	If Listview control is not in focus or nothing is selected */
			if ( l_bFocused == false || l_SelectedItemList.Count == 0 ) {
				MessageBox.Show("Select one or more files and then click download button","FTP Explorer",MessageBox.IconInformation);
				return;
			}

			/*	Get all items */
			ListItem[] l_ListItemArray = l_SelectedItemList.All;
			ListItem l_ListItemTemp = null;
			DownloadFileData[] l_FileList = new DownloadFileData[l_SelectedItemList.Count];
			
			string l_strSize = "";
			int l_iSize = 0;
			int l_iCount = 0;
			foreach(object obj in l_ListItemArray) {
				l_ListItemTemp = (ListItem) obj;
				/*	Get the File size */
				/*	Item 0 contains the size of the file */
				l_strSize = l_ListItemTemp.GetSubItem(0);
				try {
					if ( l_strSize.Length > 0 ) {
						l_iSize = int.Parse(l_strSize);
					}
					else {
						l_iSize = 0;
					}
				}
				catch ( FormatException e1 ) {
					l_iSize = 0;
				}
				l_FileList[l_iCount] = new DownloadFileData();
				l_FileList[l_iCount].FileSize = l_iSize;
				l_FileList[l_iCount].LocalFileName = m_strLocalDirectory + l_ListItemTemp.Text;
				l_FileList[l_iCount].ServerFileName = l_ListItemTemp.Text;
				l_iCount++;
			}

			/*	Check whether the same file exist in the current local directory */
			string l_strMessage = "";
			DownloadFileData l_TempObject;
			l_iCount = 0;
			foreach(object obj in l_FileList) {
				l_TempObject = (DownloadFileData) obj;
				/*	Check whether the file exist or not */
				File l_FileObj = new File(l_TempObject.LocalFileName );
				if ( l_FileObj.Exists == true ) {
					l_strMessage = "File " + l_TempObject.LocalFileName + " already exists in the local machine. Do you wish to overwrite ?";
					if ( MessageBox.Show(l_strMessage,"FTP Explorer",MessageBox.OKCancel | MessageBox.IconQuestion ) == DialogResult.Cancel ) {
						return;
					}
				}
				l_iCount++;
			}
		
			this.Cursor = Cursors.WaitCursor;

			/*	Set the corresponding type here */
			char l_CurrentMode = 'A';
			char l_WantedMode = m_FTPClient.DataTransferMode;
			int l_iRetval = 0;
			if ( l_CurrentMode != l_WantedMode ) {
				statusBarPanel2.Text = "Setting to Binary Transfer type...";
				m_statusBar.Refresh();
				l_iRetval = m_FTPClient.SetTransferType(l_WantedMode);
				if (l_iRetval == 0 ) {
					string l_strError = m_FTPClient.GetLastError();
					this.Cursor = Cursors.Arrow;
					MessageBox.Show(l_strError,"FTP Explorer",MessageBox.IconStop);
					return;
				}
			}

			m_progressBarFileStatus.Visible = true;

			int l_iDownloadSize = 5120;	/*	5K at a time */
			int l_iFileSize = 0;
			int l_iSkippedCount = 0;
			int l_iDownloadCount = 0;

			/*	Download file here */
			//	Pass this array l_strarrFinalArray
			foreach(object obj in l_FileList) {
				l_TempObject = (DownloadFileData) obj;
				l_iFileSize = l_TempObject.FileSize;

				if (l_iFileSize == 0 ) {
					l_iSkippedCount++;
					continue;
				}
				
				/*	Reset the Progress Bar Properties	*/
 				m_progressBarFileStatus.Minimum = 0;
				m_progressBarFileStatus.Maximum = 0;
				m_progressBarFileStatus.PerformStep();

				/*	Set Progress Bar properties */
				m_progressBarFileStatus.Minimum = 0;
				m_progressBarFileStatus.Maximum = l_iFileSize / l_iDownloadSize;
				m_progressBarFileStatus.Step = 1;

				statusBarPanel2.Text = "Now downloading '" + l_TempObject.ServerFileName + "' . Please wait...";
				m_statusBar.Refresh();

				/*	Do the First Step here */
				m_progressBarFileStatus.PerformStep();
				m_progressBarFileStatus.Refresh();

				/*	Download file here */
				l_iRetval = m_FTPClient.DownLoadFile(l_TempObject,l_WantedMode);
				if ( l_iRetval == 0 ) {
					string l_strErrorMessage = m_FTPClient.GetLastError();
					l_strErrorMessage += ". Aborting the rest of process";
					this.Cursor = Cursors.Arrow;
					MessageBox.Show(l_strErrorMessage,"FTP Explorer",MessageBox.IconError);
					/*	Hide the Progress bar */
					m_progressBarFileStatus.Visible = false;

					/*	Reset to 'A' type */
					if ( l_CurrentMode != l_WantedMode ) {
						this.Cursor = Cursors.WaitCursor;
						statusBarPanel2.Text = "Setting to Ascii transfer type...";
						m_statusBar.Refresh();
						l_iRetval = m_FTPClient.SetTransferType(l_CurrentMode);
						this.Cursor = Cursors.Arrow;
					}
					statusBarPanel2.Text = "Logged in as " + m_strFTPUser ;
					return;
				}

				/*	Do the Last Step here *
				m_progressBarFileStatus.PerformStep();
				m_progressBarFileStatus.Refresh();
				*/
				l_iDownloadCount++;
			}

			/*	Set back to ASCII mode. ASCII mode is 
			 *	the default for LIST command
			 * */
			if ( l_CurrentMode != l_WantedMode ) {
				statusBarPanel2.Text = "Setting to Ascii transfer type...";
				m_statusBar.Refresh();
				l_iRetval = m_FTPClient.SetTransferType(l_CurrentMode);
			}

			l_strMessage = "";
			if ( l_iSkippedCount > 0 ) {
				l_strMessage = l_iDownloadCount + " file(s) downloaded successfully. " + l_iSkippedCount + " file(s) skipped due to zero length";
			}
			else {
				l_strMessage = l_iDownloadCount + " file(s) downloaded successfully";
			}
			
			MessageBox.Show(l_strMessage,"FTP Explorer",MessageBox.IconInformation);
			
			/*	Hide the status bar */
			m_progressBarFileStatus.Visible = false;

			statusBarPanel2.Text = "Logged in as " + m_strFTPUser ;
			m_statusBar.Refresh();
			this.Cursor = Cursors.Arrow;
			return;
		}

		protected void OnClickUploadFile (object sender, System.EventArgs e)
		{
			string l_strMessage = "Upload file functionality will be supported in Beta 2 release of FTP Explorer";
			MessageBox.Show(l_strMessage,"FTP Explorer - Information",MessageBox.IconInformation);
		}

		protected void OnClickExit (object sender, System.EventArgs e)
		{
			if ( m_bConnectedFlag == true ) {
				if ( MessageBox.Show("Do you wish to close the current session ?","FTP Explorer",MessageBox.IconStop | MessageBox.OKCancel | MessageBox.DefaultButton2) == DialogResult.OK ) {
					statusBarPanel1.Text = "Closing connection. Please wait...";
					m_statusBar.Refresh();
					OnClickDisconnect(sender,e);
					this.Close();
				}
			}
			else {
				this.Close();