ItemChanged Event (original) (raw)

Summary

Occurs when any of the items inside this ImageViewer changes.

Syntax

public: event EventHandler<Leadtools::Controls::ImageViewerItemChangedEventArgs^>^ ItemChanged

Example

This example will track the ItemChanged and ItemError event and show information on them.

Run the demo, click the Example button.

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 ImageViewerItemChanged_Example() { _imageViewer.ItemChanged += (sender, e) => { var item = e.Item; var sb = new StringBuilder(); sb.AppendFormat("ItemChanged:{0} Reason:{1} Size:{2} Res:{3}", _imageViewer.Items.IndexOf(item), e.Reason, item.Size, item.Resolution); if (item.Image != null) sb.AppendFormat(" Image: {0}bpp {1} by {2}", item.Image.BitsPerPixel, item.Image.Width, item.Image.Height); else sb.AppendFormat(" Image: null"); Debug.WriteLine(sb.ToString()); if (item.Url != null) Debug.WriteLine(" Url:" + item.Url.ToString()); }; }