Version 18 has not changed from Version 18.0. For more information, refer to http://www.leadtools.com/corporate/new-in-v18.htm.
The following new members have been added existing types in LEADTOOLS For .NET v17.5:
| Member | Description | 
|---|---|
| Leadtools.Web.Controls.WebThumbnailViewer.Add(System.String,System.Int32,System.Int32,System.String) | 
                 Adds a new thumbnail element(s) from an image to the end of the WebThumbnailsViewer control.  | 
        
| Leadtools.Web.Controls.WebThumbnailViewer.Insert(System.String,System.Int32,System.Int32,System.Int32,System.String) | Inserts a new thumbnail element(s) from an image to the specified index of the WebThumbnailsViewer control. | 
| Leadtools.Web.Controls.WebThumbnailViewer.GetThumbnailText(System.Int32) | Gets the thumbnail text for a specific thumbnail element. | 
| Leadtools.Web.Controls.WebThumbnailViewer.SetThumbnailText(System.Int32,System.String) | Sets the thumbnail text for a specific thumbnail element. | 
| Leadtools.Web.Controls.WebThumbnailViewer.EnsureVisible(System.Int32) | Ensures that the specified thumbnail item is visible within the control, scrolling the contents of the control if necessary. | 
| Leadtools.Web.Controls.WebThumbnailViewer.ShowItemText | Gets or sets a value indicates whether the thumbnail item text is shown in the control or not. | 
| Leadtools.Web.Controls.WebThumbnailViewer.BrowserImageFormat | Gets or sets the format of the thumbnail image displayed in the thumbnail viewer. | 
The following members have been removed from existing types in LEADTOOLS For .NET v17.5:
| Member | Description | 
|---|---|
| Leadtools.Web.Controls.WebThumbnailViewer.Update | 
                 Updates the current selected thumbnail element's image by the image of the passed WebImageViewer control.  | 
        
Version 17 has not changed from Version 16.5. For more information, refer to http://www.leadtools.com/corporate/new-in-v17.htm
Version 16.5 has not changed from Version 16. For more information, refer to http://www.leadtools.com/home2/general/new-in-v16_5.htm
Version 16 has not changed from Version 15.