CoreWebView2.PrintToPdfStreamAsync(CoreWebView2PrintSettings) 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.
Provides the Pdf data of current web page asynchronously for the provided settings.
public System.Threading.Tasks.Task<System.IO.Stream> PrintToPdfStreamAsync (Microsoft.Web.WebView2.Core.CoreWebView2PrintSettings printSettings);member this.PrintToPdfStreamAsync : Microsoft.Web.WebView2.Core.CoreWebView2PrintSettings -> System.Threading.Tasks.Task<System.IO.Stream>Public Function PrintToPdfStreamAsync (printSettings As CoreWebView2PrintSettings) As Task(Of Stream)Parameters
- printSettings
- CoreWebView2PrintSettings
Returns
Examples
// This example prints the Pdf data of the current web page to a stream.
async void PrintToPdfStream()
{
try
{
string title = _iWebView2.CoreWebView2.DocumentTitle;
// Passing null for `PrintSettings` results in default print settings used.
System.IO.Stream stream = await _iWebView2.CoreWebView2.PrintToPdfStreamAsync(null);
DisplayPdfDataInPrintDialog(stream);
MessageBox.Show(this, "Printing" + title + " document to PDF Stream " + ((stream != null) ? "succeeded" : "failed"), "Print To PDF Stream");
}
catch (Exception exception)
{
MessageBox.Show(this, "Printing to PDF Stream failed: " + exception.Message,
"Print to PDF Stream");
}
}
// Function to display current page pdf data in a custom print preview dialog.
void DisplayPdfDataInPrintDialog(Stream pdfData)
{
// You can display the printable pdf data in a custom print preview dialog to the end user.
}
Remarks
Stream will be rewound to the start of the pdf data.
See @CoreWebView2PrintSettings for description of settings. Passing null for `printSettings` results in default print settings used.
The async PrintToPdfStream operation completes when it finishes writing to the stream. Only one `Printing` operation can be in progress at a time. If PrintToPdfStreamAsync(CoreWebView2PrintSettings) is called while a PrintToPdfStreamAsync(CoreWebView2PrintSettings) or PrintToPdfAsync(String, CoreWebView2PrintSettings) or PrintAsync(CoreWebView2PrintSettings) job is in progress, the IAsyncOperation throws an exception. This is only for printing operation on one webview.