wpf 处理文本框中的 Shift-Enter 事件
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Handling Shift-Enter event in a textbox
提问by Julien
I want a textbox where the user can shift-enter or ctrl-enter to add a newline without submitting. I found the following post on how to do ctrl-enter
我想要一个文本框，用户可以在其中使用 shift-enter 或 ctrl-enter 添加换行符而无需提交。我找到了以下关于如何执行 ctrl-enter 的帖子
http://social.msdn.microsoft.com/forums/en-US/wpf/thread/67ef5912-aaf7-43cc-bfb0-88acdc37f09c
http://social.msdn.microsoft.com/forums/en-US/wpf/thread/67ef5912-aaf7-43cc-bfb0-88acdc37f09c
works great! so i added my own block to capture shift enter like so:
效果很好！所以我添加了自己的块来捕获移位输入，如下所示：
else if (((keyData & swf.Keys.Shift) == swf.Keys.Shift) && ((keyData & swf.Keys.Enter) == swf.Keys.Enter) && Keyboard.FocusedElement == txtMessage)
{
// SHIFT ENTER PRESSED!
}
except now the box is capturing other shift combinations such as the question mark and squiggly braces and then adding a newline. What do I need to change to prevent this from happening?
除了现在该框正在捕获其他移位组合，例如问号和波浪形大括号，然后添加换行符。我需要改变什么来防止这种情况发生？
回答by LPL
I wouldn't mix with WinForms. Try:
我不会与 WinForms 混合使用。尝试：
<TextBox KeyDown="TextBox_KeyDown" />
with this event handler:
使用此事件处理程序：
private void TextBox_KeyDown(object sender, KeyEventArgs e)
{
if (e.Key == Key.Enter)
{
if (Keyboard.Modifiers.HasFlag(ModifierKeys.Control))
{
MessageBox.Show("Control + Enter pressed");
}
else if (Keyboard.Modifiers.HasFlag(ModifierKeys.Shift))
{
MessageBox.Show("Shift + Enter pressed");
}
}
}
回答by ígor
I prefeer use keybinnding inputs:
我更喜欢使用键绑定输入：
<TextBox>
<TextBox.InputBindings>
<KeyBinding Key="ENTER" Modifiers="Shift" Command="{Binding YoutCommand}"/>
</TextBox.InputBindings>
</TextBox>
回答by swedish joe
After trying most things i decided to experiment a little my self. And this seems to do the job in an easy
在尝试了大多数事情之后，我决定自己尝试一下。这似乎很容易完成这项工作
In the designer view. Select the textbox and under the "events" lightningbolt doublecklick on key->KeyDown. you will be placed in the code.
在设计师看来。选择文本框并在“事件”下闪电双击 key->KeyDown。您将被置于代码中。
paste this:
粘贴这个：
private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
if (e.Shift)
{
if(e.KeyCode == Keys.Enter)
{
MessageBox.Show("shift enter");
}
}
}
If the key shift is pressed. and then in that if-statement. if Enter is pressed a messagebox will pop up.
如果按下了键shift。然后在那个 if 语句中。如果按下 Enter 会弹出一个消息框。
Swap the messagebox with your task.
用您的任务交换消息框。
