WPF验证错误:如何在不同的TextBlock中显示,而不是工具提示 [英] WPF Validation Errors: How to show in separate TextBlock, not in ToolTip
问题描述
我想,我真的要疯了,但我不能找到一个解决方案,以显示未在工具提示中的验证错误,但在无关的文本框的用户在一个分开的文本块。
I think that I'm really going crazy, but I can't find a solution to show the validation Errors not in a tooltip, but in a separated textblock that has nothing to do with the TextBox the user types in.
我想有一个TextBlock中包含验证摘要,独立于文本框疗法用户在
I want to have one TextBlock that contains the validation summary, independent which textbox ther user types in.
待办事项你知道这种行为的解决方案
Do you know a solution for that behaviour?
编辑:
我目前的实现看起来莫名其妙地像:
My Current implementation looks somehow like that:
<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
Thanks - Gerhard
推荐答案
您可以使用的BindingGroup网格,当用户提交表单验证一切。
You can use the BindingGroup for the grid and validate everything when user submits the form.
<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>
按钮点击事件提交的BindingGroup网格如下所示:
The button click event commits the BindingGroup for the grid as shown here:
private void Button_Click(object sender, RoutedEventArgs e)
{
this.TheGrid.BindingGroup.CommitEdit();
}
的窗口的DataContext设置一类
The Window's DataContext is set to a class
public class UserInputValues
{
public string AccessCode { get; set; }
}
验证取MandatoryValidationRule类的验证方法内发生
Validation takes place within the Validation method of the MandatoryValidationRule class
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!");
}
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