async void NavigateWithWebResourceRequestCmdExecuted(object target, ExecutedRoutedEventArgs e)
{
// Need CoreWebView2Environment
if (_coreWebView2Environment == null)
{
_coreWebView2Environment = webView.CoreWebView2.Environment;
}
// Prepare post data as UTF-8 byte array and convert it to stream
// as required by the application/x-www-form-urlencoded Content-Type
var dialog = new TextInputDialog(
title: "NavigateWithWebResourceRequest",
description: "Specify post data to submit to https://www.w3schools.com/action_page.php.");
if (dialog.ShowDialog() == true)
{
string postDataString = "input=" + dialog.Input.Text;
UTF8Encoding utfEncoding = new UTF8Encoding();
byte[] postData = utfEncoding.GetBytes(
postDataString);
MemoryStream postDataStream = new MemoryStream(postDataString.Length);
postDataStream.Write(postData, 0, postData.Length);
postDataStream.Seek(0, SeekOrigin.Begin);
CoreWebView2WebResourceRequest webResourceRequest =
_coreWebView2Environment.CreateWebResourceRequest(
"https://www.w3schools.com/action_page.php",
"POST",
postDataStream,
"Content-Type: application/x-www-form-urlencoded\r\n");
webView.CoreWebView2.NavigateWithWebResourceRequest(webResourceRequest);
}
}
void SetUserAgentCmdExecuted(object target, ExecutedRoutedEventArgs e)
{
var dialog = new TextInputDialog(
title: "SetUserAgent",
description: "Enter UserAgent");
if (dialog.ShowDialog() == true)
{
WebViewSettings.UserAgent = dialog.Input.Text;
}
}
async void InjectScriptCmdExecuted(object target, ExecutedRoutedEventArgs e)
{
var dialog = new TextInputDialog(
title: "Inject Script",
description: "Enter some JavaScript to be executed in the context of this page.",
defaultInput: "window.getComputedStyle(document.body).backgroundColor");
if (dialog.ShowDialog() == true)
{
string scriptResult = await webView.ExecuteScriptAsync(dialog.Input.Text);
MessageBox.Show(this, scriptResult, "Script Result");
}
}
void SetUserAgentCmdExecuted(object target, ExecutedRoutedEventArgs e)
{
if (_coreWebView2Settings == null)
{
_coreWebView2Settings = webView.CoreWebView2.Settings;
}
var dialog = new TextInputDialog(
title: "SetUserAgent",
description: "Enter UserAgent");
if (dialog.ShowDialog() == true)
{
_coreWebView2Settings.UserAgent = dialog.Input.Text;
}
}
void DownloadStartingCmdExecuted(object target, ExecutedRoutedEventArgs e)
{
try
{
webView.CoreWebView2.DownloadStarting += delegate(
object sender, CoreWebView2DownloadStartingEventArgs args)
{
// Developer can obtain a deferral for the event so that the CoreWebView2
// doesn't examine the properties we set on the event args until
// after the deferral completes asynchronously.
CoreWebView2Deferral deferral = args.GetDeferral();
// We avoid potential reentrancy from running a message loop in the download
// starting event handler by showing our download dialog later when we
// complete the deferral asynchronously.
System.Threading.SynchronizationContext.Current.Post((_) =>
{
using (deferral)
{
// Hide the default download dialog.
args.Handled = true;
var dialog = new TextInputDialog(
title: "Download Starting",
description: "Enter new result file path or select OK to keep default path. Select cancel to cancel the download.",
defaultInput: args.ResultFilePath);
if (dialog.ShowDialog() == true)
{
args.ResultFilePath = dialog.Input.Text;
UpdateProgress(args.DownloadOperation);
}
else
{
args.Cancel = true;
}
}
}, null);
};
webView.CoreWebView2.Navigate("https://demo.smartscreen.msft.net/");
}
catch (NotImplementedException exception)
{
MessageBox.Show(this, "DownloadStarting Failed: " + exception.Message, "Download Starting");
}
}