CoreWebView2.CapturePreviewAsync Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Captures an image of what WebView is displaying.
public System.Threading.Tasks.Task CapturePreviewAsync (Microsoft.Web.WebView2.Core.CoreWebView2CapturePreviewImageFormat imageFormat, System.IO.Stream imageStream);member this.CapturePreviewAsync : Microsoft.Web.WebView2.Core.CoreWebView2CapturePreviewImageFormat * System.IO.Stream -> System.Threading.Tasks.TaskPublic Function CapturePreviewAsync (imageFormat As CoreWebView2CapturePreviewImageFormat, imageStream As Stream) As TaskParameters
- imageFormat
- CoreWebView2CapturePreviewImageFormat
The format of the image to be captured.
- imageStream
- Stream
The stream to which the resulting image binary data is written.
Returns
Remarks
When CapturePreviewAsync finishes writing to the stream, the Invoke method on the provided handler parameter is called. This method fails if called before the first ContentLoading event. For example if this is called in the NavigationStarting event for the first navigation it will fail. For subsequent navigations, the method may not fail, but will not capture an image of a given webpage until the ContentLoading event has been fired for it. Any call to this method prior to that will result in a capture of the page being navigated away from.