Stops the viewer from updating the transformations matrices, view layout and rendering the content if any change is applied. This is useful to increase the control's speed efficiency.
ImageViewer.prototype.beginUpdate = function()
The BeginUpdate method will cause the control to not update the image viewing transformation or invalidate the display when any changes to the control's properties or the image is applied. When the user calls the EndUpdate method, the viewer will then update the transformation and invalidate the display to show all the changes that have been made.
For better visual results and for speed efficiency, it is recommended you surround multiple calls that will cause a render or transformation change between BeginUpdate and EndUpdate.
BeginUpdate will call BeginRender and BeginTransform while EndUpdate will call EndRender and EndTransform. The most common usage of stopping the viewer from updating will usually involve disabling both transformations update and rendering. If only rendering or only transformation is to be disabled for a specific need, then use BeginRender and BeginTransform individually.
For more information, refer to Image Viewer Rendering.
For an example, refer to Items.
Medical Web Viewer .NET
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