[英]UWP Waiting for user interaction with ContentDialog
在我的UWP應用程序中,我顯示的ContentDialog
包含少量TextBox
並根據用戶輸入執行一些操作。 我想做的是這樣的:
ContentDialogResult result = await LoginDialog.ShowAsync();
//Nothing else should be executed before the below method finishes executing
//other code
//....
//....
private void DialogPrimaryButton_ClickAsync(object sender, RoutedEventArgs e)
{
SomethingSynchronous();
}
我是一個新手,不能正確理解async-await,發生的事情就是跟隨該行的代碼
ContentDialogResult result = await LoginDialog.ShowAsync();
在用戶單擊對話框的主要或輔助按鈕之前繼續執行。 我想在用戶與對話框交互后繼續前進。
方法1
private async void DialogPrimaryButton_ClickAsync(object sender, RoutedEventArgs e)
{
await DisplayContentDialog();
}
private async Task DisplayContentDialog()
{
ContentDialogResult result = await LoginDialog.ShowAsync();
//For Primary, Secondary and Cancel Buttons inside the ContentDialog
if (result == ContentDialogResult.Primary)
{
OutputText.Text = "Primary";
// User Pressed Primary key
}
else if (result == ContentDialogResult.Secondary)
{
OutputText.Text = "Secondary";
// User Pressed Secondary key
}
else
{
OutputText.Text = "Cancel";
// User pressed Cancel, ESC, or the back arrow.
}
}
//For custom Buttons inside the ContentDialog
//Use Button Click event for the custom Buttons inside the ContentDialog
private void XAMLButton_Click(object sender, RoutedEventArgs e)
{
OutputText.Text = "XAML Button";
LoginDialog.Hide();
}
方法2
private async void DialogPrimaryButton_ClickAsync(object sender, RoutedEventArgs e)
{
await DisplayContentDialog();
}
private async Task DisplayContentDialog()
{
XAMLButton.Click += XAMLButton_Click;
LoginDialog.PrimaryButtonClick += LoginDialog_PrimaryButtonClick;
LoginDialog.SecondaryButtonClick += LoginDialog_SecondaryButtonClick;
LoginDialog.CloseButtonClick += LoginDialog_CloseButtonClick;
await LoginDialog.ShowAsync();
}
//For Primary Button inside the ContentDialog
private void LoginDialog_PrimaryButtonClick(ContentDialog sender, ContentDialogButtonClickEventArgs args)
{
OutputText.Text = "Primary";
}
//For Secondary Button inside the ContentDialog
private void LoginDialog_SecondaryButtonClick(ContentDialog sender, ContentDialogButtonClickEventArgs args)
{
OutputText.Text = "Secondary";
}
//For Cancel Buttons inside the ContentDialog
private void LoginDialog_CloseButtonClick(ContentDialog sender, ContentDialogButtonClickEventArgs args)
{
OutputText.Text = "Cancel";
}
//For custom Buttons inside the ContentDialog
private void XAMLButton_Click(object sender, RoutedEventArgs e)
{
OutputText.Text = "XAML Button";
LoginDialog.Hide();
}
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