LoadProgress Event

Summary
Occurs when loading file(s) image(s), if the user passed LoadFileImage and/or GenerateThumbnail.
Syntax
C#
C++/CLI
public event EventHandler<RasterDialogLoadProgressEventArgs> LoadProgress 
public: 
event EventHandler<RasterDialogLoadProgressEventArgs^>^ LoadProgress
Event Data

The event handler receives an argument of type RasterDialogLoadProgressEventArgs containing data related to this event. The following RasterDialogLoadProgressEventArgs properties provide information specific to this event.

PropertyDescription
Cancel Gets or sets a value that indicates whether to abort the command.
FilePercent Gets a value that shows the progress of the current file loading process.
LoadRasterFileData Gets the file data that has just been loaded.
TotalPercent An integer that represents the percentage of the total selected file(s) loading process.
Example
C#
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.WinForms.CommonDialogs.File; 
 
 
public void RasterOpenDialogExample() 
{ 
	RasterCodecs rasterCodecs = new RasterCodecs(); 
 
	RasterOpenDialog openDlg = new RasterOpenDialog(rasterCodecs); 
 
	openDlg.Filter = new RasterOpenDialogLoadFormat[] 
	{ 
	new RasterOpenDialogLoadFormat ( "All Files", "*.*" ), 
	new RasterOpenDialogLoadFormat ( "LEAD", "*.cmp" ) 
	}; 
 
	openDlg.CheckFileExists = true; 
	openDlg.CheckPathExists = true; 
	openDlg.DefaultExt = "cmp"; 
	openDlg.DereferenceLinks = true; 
	openDlg.EnableSizing = true; 
	openDlg.FileName = "Image1.cmp"; 
	openDlg.FilterIndex = 2; 
	openDlg.GenerateThumbnail = false; 
	openDlg.InitialDirectory = LEAD_VARS.ImagesDir; 
	openDlg.InitialView = FileDialogInitialView.List; 
	openDlg.LoadCompressed = true; 
	openDlg.LoadFileImage = false; 
	openDlg.LoadOptions = false; 
	openDlg.LoadRotated = false; 
	openDlg.Multiselect = true; 
	openDlg.PreviewWindowVisible = true; 
	openDlg.ShowDeletePage = true; 
	openDlg.ShowFileInformation = true; 
	openDlg.ShowGeneralOptions = true; 
	openDlg.ShowHelp = true; 
	openDlg.ShowLoadCompressed = true; 
	openDlg.ShowLoadOptions = true; 
	openDlg.ShowLoadRotated = true; 
	openDlg.ShowMultipage = true; 
	openDlg.ShowPdfOptions = true; 
	openDlg.ShowXpsOptions = true; 
	openDlg.ShowXlsOptions = true; 
	openDlg.ShowVffOptions = true; 
	openDlg.ShowAnzOptions = true; 
	openDlg.ShowVectorOptions = true; 
	openDlg.ShowPreview = true; 
	openDlg.ShowProgressive = true; 
	openDlg.ShowRasterOptions = true; 
	openDlg.ShowTotalPages = true; 
	openDlg.Title = "Open Dialog"; 
	openDlg.UseFileStamptoPreview = true; 
	openDlg.Help += new EventHandler<RasterDialogHelpEventArgs>(openDlg_Help); 
	openDlg.LoadCorrupted = true; 
 
	// if you set "openDlg.LoadFileImage = true" this event will be fired 
	openDlg.LoadProgress += new EventHandler<RasterDialogLoadProgressEventArgs>(openDlg_LoadProgress); 
 
	if (DialogResult.OK == openDlg.ShowDialog(null)) 
	{ 
		for (int i = 0; i < openDlg.OpenedFileData.Count; i++) 
		{ 
			RasterDialogFileData fileDataItem = openDlg.OpenedFileData[i]; 
 
			// this is not an image file. 
			if (fileDataItem.Options == null) 
			{ 
				continue; 
			} 
 
			rasterCodecs.Options.RasterizeDocument.Load.PageWidth = fileDataItem.Options.RasterizeDocumentOptions.PageWidth; 
			rasterCodecs.Options.RasterizeDocument.Load.PageHeight = fileDataItem.Options.RasterizeDocumentOptions.PageHeight; 
			rasterCodecs.Options.RasterizeDocument.Load.LeftMargin = fileDataItem.Options.RasterizeDocumentOptions.LeftMargin; 
			rasterCodecs.Options.RasterizeDocument.Load.TopMargin = fileDataItem.Options.RasterizeDocumentOptions.TopMargin; 
			rasterCodecs.Options.RasterizeDocument.Load.RightMargin = fileDataItem.Options.RasterizeDocumentOptions.RightMargin; 
			rasterCodecs.Options.RasterizeDocument.Load.BottomMargin = fileDataItem.Options.RasterizeDocumentOptions.BottomMargin; 
			rasterCodecs.Options.RasterizeDocument.Load.Unit = fileDataItem.Options.RasterizeDocumentOptions.Unit; 
			rasterCodecs.Options.RasterizeDocument.Load.XResolution = fileDataItem.Options.RasterizeDocumentOptions.XResolution; 
			rasterCodecs.Options.RasterizeDocument.Load.YResolution = fileDataItem.Options.RasterizeDocumentOptions.YResolution; 
			rasterCodecs.Options.RasterizeDocument.Load.SizeMode = fileDataItem.Options.RasterizeDocumentOptions.SizeMode; 
 
			switch (fileDataItem.Options.FileType) 
			{ 
				case RasterDialogFileOptionsType.Meta: 
					{ 
						if (null != fileDataItem.Options.MetaOptions) 
						{ 
							rasterCodecs.Options.Wmf.Load.XResolution = fileDataItem.Options.MetaOptions.XResolution; 
							rasterCodecs.Options.Wmf.Load.YResolution = fileDataItem.Options.MetaOptions.XResolution; 
						} 
						break; 
					} 
 
				case RasterDialogFileOptionsType.Pdf: 
					{ 
						if ((null != fileDataItem.Options.PdfOptions) && 
							  rasterCodecs.Options.Pdf.IsEngineInstalled) 
						{ 
							rasterCodecs.Options.Pdf.Load.DisplayDepth = fileDataItem.Options.PdfOptions.DisplayDepth; 
							rasterCodecs.Options.Pdf.Load.GraphicsAlpha = fileDataItem.Options.PdfOptions.GraphicsAlpha; 
 
							if (fileDataItem.Options.PdfOptions.Password != null) 
							{ 
								rasterCodecs.Options.Pdf.Load.Password = fileDataItem.Options.PdfOptions.Password; 
							} 
 
							rasterCodecs.Options.Pdf.Load.TextAlpha = fileDataItem.Options.PdfOptions.TextAlpha; 
							rasterCodecs.Options.Pdf.Load.UseLibFonts = fileDataItem.Options.PdfOptions.UseLibFonts; 
						} 
						break; 
					} 
 
				case RasterDialogFileOptionsType.Misc: 
					{ 
						if (null == fileDataItem.Options.MiscOptions) 
						{ 
							continue; 
						} 
 
						switch (fileDataItem.FileInfo.Format) 
						{ 
							case RasterImageFormat.Jbig: 
								{ 
									rasterCodecs.Options.Jbig.Load.Resolution = new LeadSize(fileDataItem.Options.MiscOptions.XResolution, 
									   fileDataItem.Options.MiscOptions.YResolution); 
									break; 
								} 
 
							case RasterImageFormat.Cmw: 
								{ 
									rasterCodecs.Options.Jpeg2000.Load.CmwResolution = new LeadSize(fileDataItem.Options.MiscOptions.XResolution, 
									   fileDataItem.Options.MiscOptions.YResolution); 
									break; 
								} 
 
							case RasterImageFormat.Jp2: 
								{ 
									rasterCodecs.Options.Jpeg2000.Load.Jp2Resolution = new LeadSize(fileDataItem.Options.MiscOptions.XResolution, 
									   fileDataItem.Options.MiscOptions.YResolution); 
									break; 
								} 
 
							case RasterImageFormat.J2k: 
								{ 
									rasterCodecs.Options.Jpeg2000.Load.J2kResolution = new LeadSize(fileDataItem.Options.MiscOptions.XResolution, 
									   fileDataItem.Options.MiscOptions.YResolution); 
									break; 
								} 
						} 
						break; 
					} 
 
				case RasterDialogFileOptionsType.Xls: 
					rasterCodecs.Options.Xls.Load.MultiPageSheet = fileDataItem.Options.XlsOptions.MultiPageSheet; 
					rasterCodecs.Options.Xls.Load.MultiPageEnableMargins = fileDataItem.Options.XlsOptions.MultiPageEnableMargins; 
					rasterCodecs.Options.Xls.Load.MultiPageUseSheetWidth = fileDataItem.Options.XlsOptions.MultiPageUseSheetWidth; 
					rasterCodecs.Options.Xls.Load.PageOrderDownThenOver = fileDataItem.Options.XlsOptions.PageOrderDownThenOver; 
					break; 
 
				case RasterDialogFileOptionsType.Vff: 
					rasterCodecs.Options.Vff.Load.View = fileDataItem.Options.VffOptions.View; 
					break; 
 
				case RasterDialogFileOptionsType.Anz: 
					rasterCodecs.Options.Anz.Load.View = fileDataItem.Options.AnzOptions.View; 
					break; 
 
				case RasterDialogFileOptionsType.Vector: 
					rasterCodecs.Options.Vector.Load.BackgroundColor = fileDataItem.Options.VectorOptions.Options.BackgroundColor; 
					rasterCodecs.Options.Vector.Load.BitsPerPixel = fileDataItem.Options.VectorOptions.Options.BitsPerPixel; 
					rasterCodecs.Options.Vector.Load.ForceBackgroundColor = fileDataItem.Options.VectorOptions.Options.ForceBackgroundColor; 
					rasterCodecs.Options.Vector.Load.ViewHeight = fileDataItem.Options.VectorOptions.Options.ViewHeight; 
					rasterCodecs.Options.Vector.Load.ViewMode = fileDataItem.Options.VectorOptions.Options.ViewMode; 
					rasterCodecs.Options.Vector.Load.ViewWidth = fileDataItem.Options.VectorOptions.Options.ViewWidth; 
					break; 
			} 
 
			rasterCodecs.Options.Load.Passes = fileDataItem.Passes; 
			rasterCodecs.Options.Load.Rotated = fileDataItem.LoadRotated; 
			rasterCodecs.Options.Load.Compressed = fileDataItem.LoadCompressed; 
 
			RasterImage loadedImage = rasterCodecs.Load(fileDataItem.Name, 
			   0, 
			   CodecsLoadByteOrder.BgrOrGray, 
			   fileDataItem.PageNumber, 
			   fileDataItem.PageNumber); 
 
			// COPY THE 'loadedImage' IMAGE. 
 
			loadedImage.Dispose(); 
		} 
	} 
} 
public void openDlg_Help(object sender, RasterDialogHelpEventArgs e) 
{ 
	switch (e.Dialog) 
	{ 
		case RasterDialogHelpName.Open: 
			{ 
				MessageBox.Show("Open dialog Help"); 
				break; 
			} 
 
		case RasterDialogHelpName.LoadOptions: 
			{ 
				MessageBox.Show("Load Options dialog Help"); 
				break; 
			} 
	} 
} 
 
public void openDlg_LoadProgress(object sender, RasterDialogLoadProgressEventArgs e) 
{ 
	string displayText; 
 
	displayText = "(" + e.FilePercent.ToString() + "%) of" + e.LoadRasterFileData.Name + "file is loaded"; 
	MessageBox.Show(displayText); 
 
	displayText = "(" + e.TotalPercent.ToString() + "%) of all file(s) loading process is completed"; 
	MessageBox.Show(displayText); 
} 
 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}
Requirements

Target Platforms

Help Version 23.0.2024.2.29
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Leadtools.WinForms.CommonDialogs.File Assembly
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