Items Property (original) (raw)

Syntax

Property Value

The collection of items in this ImageViewer.

Example

This example will show how to add, remove and enumerate items in the viewer.

Start with the ImageViewer example, remove all the code inside the example function (search for the "// TODO: add example code here" comment) and insert the following code:

using Leadtools; using Leadtools.Controls; using Leadtools.Codecs; using Leadtools.Drawing; using Leadtools.ImageProcessing; using Leadtools.ImageProcessing.Color; public void ImageViewerItems_Example() { // Clear all the images already the viewer _imageViewer.Items.Clear(); // Use vertical view layout _imageViewer.ViewLayout = new ImageViewerVerticalViewLayout(); _imageViewer.ImageBorderThickness = 1; // Add 4 items to the viewer using (var codecs = new RasterCodecs()) { for (var page = 1; page <= 4; page++) { var item = new ImageViewerItem(); var fileName = Path.Combine(LEAD_VARS.ImagesDir, string.Format("ocr{0}.tif", page)); item.Image = codecs.Load(fileName, 100, 100, 24, RasterSizeFlags.Resample, CodecsLoadByteOrder.BgrOrGray, page, page); // Set the tag of each item to be the page number item.Tag = page; _imageViewer.Items.Add(item); } } // Show the count Debug.WriteLine("This must say 4: " + _imageViewer.Items.Count); // Remove the item at index 1 (page 2) _imageViewer.Items.RemoveAt(1); Debug.WriteLine("This must now say 3: " + _imageViewer.Items.Count); // Loop through each item and show the tag, since we remove page 2, it must say 1, 3, 4 foreach (var item in _imageViewer.Items) { var pageNumber = (int)item.Tag; Debug.WriteLine(pageNumber.ToString()); } } static class LEAD_VARS { public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; }