我认为我真的很疯狂,但我找不到一个解决方案来显示验证错误,而不是在工具提示中,而是在一个与用户输入的TextBox无关的独立文本块中。 / p>
我希望有一个包含验证摘要的TextBlock,独立于文本框用户输入的内容。
你知道这种行为的解决方案吗?
编辑: 我的当前实现看起来像这样:
<TextBox Margin="{StaticResource WinHorizontalMargin}"
Style="{StaticResource WinInputBoxNormalStyle}">
<TextBox.Text>
<Binding Path="AccessCode" Mode="TwoWay" UpdateSourceTrigger="PropertyChanged">
<Binding.ValidationRules>
<ValidationRules:MandatoryValidationRule Field="Access Code"/>
</Binding.ValidationRules>
</Binding>
</TextBox.Text>
</TextBox>
<!-- Content Error Message -->
<TextBlock Grid.Row="2" Grid.ColumnSpan="2" Text="{Binding Path=(Validation.Errors)[0].ErrorContent}">
</TextBlock>
由于 - 格哈德
答案 0 :(得分:2)
您可以将BindingGroup用于网格,并在用户提交表单时验证所有内容。
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:WpfApplication1="clr-namespace:WpfApplication1" Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<WpfApplication1:ErrorsToMessageConverter x:Key="e2mConverter"/>
</Window.Resources>
<Grid x:Name="TheGrid">
<Grid.BindingGroup>
<BindingGroup Name="UserInputBindingGroup">
<BindingGroup.ValidationRules>
<WpfApplication1:MandatoryValidationRule/>
</BindingGroup.ValidationRules>
</BindingGroup>
</Grid.BindingGroup>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition />
<RowDefinition />
</Grid.RowDefinitions>
<TextBox x:Name="theTextBox">
<TextBox.Text>
<Binding Path="AccessCode" Mode="TwoWay" UpdateSourceTrigger="PropertyChanged">
</Binding>
</TextBox.Text>
</TextBox>
<!-- Content Error Message -->
<TextBlock Grid.Row="1" Text="{Binding ElementName=TheGrid, Path=(Validation.Errors), Converter={StaticResource e2mConverter}}">
</TextBlock>
<Button Grid.Row="2" Content="Submit" Click="Button_Click" />
</Grid>
</Window>
按钮单击事件提交网格的BindingGroup,如下所示:
private void Button_Click(object sender, RoutedEventArgs e)
{
this.TheGrid.BindingGroup.CommitEdit();
}
Window的DataContext设置为类
public class UserInputValues
{
public string AccessCode { get; set; }
}
验证发生在MandatoryValidationRule类的验证方法
中public override ValidationResult Validate(object value, CultureInfo cultureInfo)
{
BindingGroup bindingGroup = (BindingGroup) value;
UserInputValues userInputValues = (UserInputValues) bindingGroup.Items[0];
object accessCode = bindingGroup.GetValue(userInputValues, "AccessCode");
// Validation code here...
return new ValidationResult(false, "No no no!");
}
答案 1 :(得分:1)
使用ElementName绑定TextBlock绑定到提供errors通知的TextBox。您可能还想编写一个转换器,将验证错误集合转换为文本,以便更容易在单独的TextBlock中显示。