双 NHibernate 类级别验证器问题
我正在使用 WPF，并且我有一个绑定到一系列控件的实体。该实体用两个类级别验证器装饰，如下所示：
[ExampleValidator1, ExampleValidator2]
public class Entity
实体具有一系列字段，其中并非所有字段都始终显示，具体取决于组合框中的选择。 每个选择都存在一个验证器，如果实体的“类型”与验证器返回 true 的特定验证器不匹配，显然正确的验证器将验证实际字段，如下所示：
public bool IsValid(object value, IConstraintValidatorContext constraintValidatorContext)
{
constraintValidatorContext.DisableDefaultError();
var allPropertiesValid = true;
var entity= (Entity)value;
if (supplier.ParticularEntityType)
{
return true;
}
if (String.IsNullOrEmpty(entity.Name) || entity.Name.Length > 50)
{
constraintValidatorContext.AddInvalid<Entity, string>("must be 50 or shorter and not empty", x => x.Name);
allPropertiesValid = false;
}
XAML 如下：
<TextBox Grid.Row="0" Grid.Column="3">
<TextBox.Text>
<Binding Path="Entity.Name" UpdateSourceTrigger="PropertyChanged" ValidatesOnDataErrors="True">
</Binding>
</TextBox.Text>
</TextBox>
显然我得到了漂亮的红色框和工具提示告知用户验证要求。
我的问题是，当组合框中的选择发生更改时，红色突出显示仍然存在（隐藏控件时会变成一个小红色方块）。 请有人指导我正确的方法！
I'm using WPF and I've got an Entity bound to a series of controls. The entity is decorated with two class level validators as follows:
[ExampleValidator1, ExampleValidator2]
public class Entity
An Entity has a series of fields of which not all are always shown, dependent on the selection from combo box.
A validator exists for each of these selections, if the "type" of entity does not match a particular validator that validator returns true and obviously the correct validator will validate the actual fields as follows:
public bool IsValid(object value, IConstraintValidatorContext constraintValidatorContext)
{
constraintValidatorContext.DisableDefaultError();
var allPropertiesValid = true;
var entity= (Entity)value;
if (supplier.ParticularEntityType)
{
return true;
}
if (String.IsNullOrEmpty(entity.Name) || entity.Name.Length > 50)
{
constraintValidatorContext.AddInvalid<Entity, string>("must be 50 or shorter and not empty", x => x.Name);
allPropertiesValid = false;
}
and the XAML is as follows:
<TextBox Grid.Row="0" Grid.Column="3">
<TextBox.Text>
<Binding Path="Entity.Name" UpdateSourceTrigger="PropertyChanged" ValidatesOnDataErrors="True">
</Binding>
</TextBox.Text>
</TextBox>
Obviously I get the nice pretty red box and tool tips informing users of the validation requirements.
My issue is that when the selection in the combobox is changed, the red highlighting persists (becomes a small red square when a control is hidden).
Could someone direct me the right way please!
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通过在更改组合框时触发 OnPropertyChanged 来解决，这不是理想的解决方案，但它是可行的。
Solved by firing an OnPropertyChanged when the combobox is altered, not an ideal solution but its workable.