How do you get a submit button in the Windows Phon

问题:

I want the white arrow to appear in my text input boxes so users have a way of forward other than tapping away from the keyboard or using the hardware Back button.

The search fields do this in the system UI. How do I?

Here's my code XAML:

<TextBox x:Name="InputBox" InputScope="Text" AcceptsReturn="True" TextChanged="InputBox_TextChanged"/>

CS:

void InputBox_TextChanged(object sender, KeyEventArgs e)
{
    // e does not have Key property for capturing enter - ??
}

One quick note, I have tried AcceptsReturn as False also.

回答1:

Instead of handling the TextChanged method, handle the KeyUp method of the Textbox:

private void InputBox_KeyUp(object sender, System.Windows.Input.KeyEventArgs e)
{
      if (e.Key == Key.Enter)
      {
           //enter has been pressed
      }
}

回答2:

Also, I found that to get the white submit button that the search box has you can set the InputScope to "search":

<TextBox x:Name="InputBox" InputScope="Search" AcceptsReturn="False" KeyUp="InputBox_KeyUp"/>

I still haven't figured out if this has any unintended side-effects.

For good measure here is the code to dismiss the keyboard in the KeyUp event:

void InputBox_KeyUp(object sender, System.Windows.Input.KeyEventArgs e)
{
      if (e.Key == Key.Enter)
      {
           this.Focus();
      }
}