C# 带有错误模板和代码的文本框
我试图通过代码向表单中添加一些文本框,而不是XAML。以及使用错误验证。我有以下代码:C# 带有错误模板和代码的文本框,c#,wpf,xaml,adorner,errortemplate,C#,Wpf,Xaml,Adorner,Errortemplate,我试图通过代码向表单中添加一些文本框,而不是XAML。以及使用错误验证。我有以下代码: SearchTextBox stb = new SearchTextBox() { Name = "stbRelatorio_" + id }; // Create a new Binding. Binding bindingStb = new Binding(); bindingStb.Source = model; bindingStb.Path = new PropertyPath("Repo
SearchTextBox stb = new SearchTextBox()
{
Name = "stbRelatorio_" + id
};
// Create a new Binding.
Binding bindingStb = new Binding();
bindingStb.Source = model;
bindingStb.Path = new PropertyPath("ReportFile[" + id + "]");
stb.SetBinding(SearchTextBox.FileNameProprety, bindingStb);
BindingExpression bindingExpression =
BindingOperations.GetBindingExpression(stb, SearchTextBox.FileNameProprety);
BindingExpressionBase bindingExpressionBase =
BindingOperations.GetBindingExpressionBase(stb, SearchTextBox.FileNameProprety);
ValidationError validationError =
new ValidationError(new ExceptionValidationRule(), bindingExpression);
Validation.MarkInvalid(bindingExpressionBase, validationError);
ControlTemplate ct = this.Resources["validationErrorTemplate"] as ControlTemplate;
当我这样做时,当没有插入文本时,我会得到默认行为(这是我的错误案例)。文本框周围的红色框。我现在想要的是使用自定义装饰器布局,并在XAML上构建它
<ControlTemplate x:Name="validationErrorTemplate" x:Key="validationErrorTemplate">
<DockPanel>
<StackPanel Orientation="Horizontal" DockPanel.Dock="Top">
<Grid Width="12" Height="12">
<Ellipse Width="12" Height="12"
Fill="Red" HorizontalAlignment="Center"
VerticalAlignment="Center"></Ellipse>
<TextBlock Foreground="White" FontWeight="Heavy"
FontSize="8" HorizontalAlignment="Center" VerticalAlignment="Center" TextAlignment="Center"
ToolTip="{Binding ElementName=ErrorAdorner, Path=AdornedElement.(Validation.Errors)[0].ErrorContent}">
X
</TextBlock>
</Grid>
<TextBlock Foreground="Red" FontWeight="12" Margin="2,0,0,2"
Text="{Binding ElementName=ErrorAdorner,
Path=AdornedElement.(Validation.Errors)[0].ErrorContent}">
</TextBlock>
</StackPanel>
<AdornedElementPlaceholder x:Name="ErrorAdorner" />
</DockPanel>
</ControlTemplate>
我没有得到任何错误验证,甚至没有默认模板
我遗漏了什么吗?我说的
SearchTextBox
继承自TextBox
?
然后将绑定更改为:
stb.SetBinding(TextBox.TextProperty, bindingStb);
更新:
ControlTemplate ct = FindResource("validationErrorTemplate") as ControlTemplate;
Validation.SetErrorTemplate(stb, ct);
当你这样做的时候
ControlTemplate ct = this.Resources["validationErrorTemplate"] as ControlTemplate;
Validation.SetErrorTemplate(stb, ct);
甚至没有默认的错误模板,ct
很可能为空
确保“validationErrorTemplate”存储在窗口(此
)资源中。若模板存储在资源中的某个地方,则可以通过FindResource
方法找到它
ControlTemplate ct = stb.FindResource("validationErrorTemplate") as ControlTemplate;
Validation.SetErrorTemplate(stb, ct);
对不起,忘了提那件事了。那么Validation.SetErrorTemplate(stb、ct)呢;当您在
Validation.SetErrorTemplate(stb,ct)上设置断点时代码>是否ct
有值或ct
为空?
ControlTemplate ct = stb.FindResource("validationErrorTemplate") as ControlTemplate;
Validation.SetErrorTemplate(stb, ct);