Question

我制作了一个由datePicker和comboBox组成的应用程序。 comboBox有一个从0到5的数字列表。当用户选择＆＃34; 1＆＃34;我想要启用datePicker，但如果用户选择了其他任何内容，我希望datePicker被禁用。但由于某些原因，此代码无效，datePicker始终处于禁用状态。

我的代码是休闲

XAML

<ComboBox x:Name="cbxNoClaims" Loaded="cbxNoClaims_Loaded" Grid.Row="13" Grid.Column="1" HorizontalAlignment="Center" VerticalAlignment="Top" Width="120"/>
<DatePicker Name="dpkClaim1" Loaded="dpkClaim1_Loaded" Grid.Row="13" Grid.Column="2"  HorizontalAlignment="Center" VerticalAlignment="Top"/>

MainWindow.xaml.cs

private void cbxNoClaims_Loaded(object sender, RoutedEventArgs e)
{
    // ... A List.
    List<string> claim = new List<string>();
    claim.Add("0 ");
    claim.Add("1");
    claim.Add("2");
    claim.Add("3");
    claim.Add("4");
    claim.Add("5");


    // ... Get the ComboBox reference.
    var comboBox = sender as ComboBox;

    // ... Assign the ItemsSource to the List.
    comboBox.ItemsSource = claim;
    comboBox.SelectedIndex = 0;
}

private void dpkClaim1_Loaded(object sender, RoutedEventArgs e)
{
     DatePicker datePicker = sender as DatePicker;
    if ((string)cbxNoClaims.Item== "1")
    {
        dpkClaim1.IsEnabled = true;

    }
    else dpkClaim1.IsEnabled = false;

}

Answer 1

在组合框中使用选择更改事件。

XAML：

<ComboBox x:Name="cbxNoClaims" SelectionChanged="cbxNoClaims_SelectionChanged" Grid.Row="13" Grid.Column="1" HorizontalAlignment="Center" VerticalAlignment="Top" Width="120"/>

代码：

private void cbxNoClaims_SelectionChanged(object sender, RoutedEventArgs e)
{
    if (cbxNoClaims.SelectedItem.ToString() == "1")
    {
        dpkClaim1.IsEnabled = true;
    }
    else 
    {
        dpkClaim1.IsEnabled = false;
    }
}

如何使用＆＃34; if语句禁用日期选择器＆＃34; WPF

1 个答案: