Question

我在WPF对话框中有一个默认按钮，我用于登录对话框，我将ok按钮设置为默认值，取消按钮取消。发生的事情是我必须在关闭对话框之前按两次Enter键。以下是一些代码片段，首先是xaml：

    <Window x:Class="WPFClient.dlgLogin"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="User Login" 
        Height="220" 
        Width="372" 
        xmlns:igEditors="http://infragistics.com/Editors" 
        WindowStartupLocation="CenterScreen" 
        WindowStyle="ThreeDBorderWindow" 
        ShowInTaskbar="False"
        FocusManager.FocusedElement="{Binding ElementName=xamtxtLogin}" ResizeMode="NoResize">

    <Grid>
        <Label Content="Login:" Height="28" HorizontalAlignment="Left" Margin="97,51,0,0" Name="lblLogin" VerticalAlignment="Top" />
        <Label Content="Password:" Height="28" HorizontalAlignment="Left" Margin="78,78,0,0" Name="lblPassword" VerticalAlignment="Top" />
        <igEditors:XamTextEditor HorizontalAlignment="Left" Margin="145,56,0,0" Name="xamtxtLogin" VerticalAlignment="Top" Width="156" />
        <igEditors:XamTextEditor HorizontalAlignment="Left" Margin="145,84,0,0" Name="xamtxtPassword" VerticalAlignment="Top" Width="156" />
        <Button Content="Ok" IsDefault="True" Height="23" HorizontalAlignment="Left" Margin="145,121,0,0" Name="bOk" VerticalAlignment="Top" Width="75" Click="bOk_Click" />
        <Button Content="Cancel" IsCancel="True" Height="23" HorizontalAlignment="Left" Margin="226,121,0,0" Name="bCancel" VerticalAlignment="Top" Width="75" Click="bCancel_Click" />
    </Grid>
</Window>

现在我的对话框代码：

public partial class dlgLogin : Window
{
    public dlgLogin()
    {
        InitializeComponent();
    }

    private void bOk_Click( object sender, RoutedEventArgs e )
    {
        this.DialogResult = true;
        this.Close();
    }

    private void bCancel_Click( object sender, RoutedEventArgs e )
    {
        this.DialogResult = false;
        this.Close();
    }
}

最后我的代码在使用对话框的窗口中：

private void Login()
{
    dlgLogin LoginDialog = new dlgLogin();
    LoginDialog.Owner = this;
    LoginDialog.ShowDialog();

    if ( LoginDialog.DialogResult.HasValue && LoginDialog.DialogResult.Value )
    {
        MessageBox.Show( "Ok clicked." );
        this.LoginActive = LoginDialog.DialogResult.Value;
    }
    else
    {
        MessageBox.Show( "Cancel clicked." );
        this.LoginActive = false;
    }
}

这是我的第一个WPF应用程序，我不确定我是否遗漏了一些东西。我的理解是，当你有一个默认的按钮设置时，只需点击输入即可触发按钮的事件，但出于某种原因，我总是要点击它两次才能工作。

感谢。

WPF - 默认按钮需要返回两次

0 个答案: