WPF中的文本框绑定更新 [英] Textbox binding update in WPF
本文介绍了WPF中的文本框绑定更新的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
MessageText属性仅在我按下另一个控件时才会更新。如果我按下任意按钮,则不会执行其Click处理程序,而是执行MessageText集。我伤了头。
MessageText property gets updated only when I hit another control. What is more if I press any button it's Click handler isn't executed and the MessageText set is executed instead. I've broken my head.
<TextBox x:Name="messageText" Grid.Row="1" Grid.Column="0"
TextWrapping="Wrap" Text="{Binding Path=MessageText, Mode=TwoWay}"/>
private void ChatView_Loaded(object sender, RoutedEventArgs e)
{
DataContext = viewModel;
}
public string MessageText
{
get
{
return this.messageText;
}
set
{
this.messageText = value;
OnProperyChanged("MessageText");
}
}
推荐答案
您可以将UpdateSourceTrigger调整为PropertyChanged
You can adjust UpdateSourceTrigger to PropertyChanged
<TextBox x:Name="messageText" Grid.Row="1" Grid.Column="0"
TextWrapping="Wrap" Text="{Binding Path=MessageText, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
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