我创建了一个自定义按钮,该按钮上有一个布尔标志,以说出是否被选中。如果选择了,我想更改按钮的背景颜色,以允许用户知道他们正在迅速查看的控件。问题在于我无法触发扳机正常工作。我在这里看到的所有内容,我都尝试过,但是在代码的初始InizeComponent部分中,我仍然会遇到错误。
这是我要处理的属性
Private mIsSelected As Boolean = False
Public Property IsSelected() As Boolean
Get
Return mIsSelected
End Get
Set(ByVal value As Boolean)
mIsSelected = value
End Set
End Property
Public Shared ReadOnly MyBackgroundProperty As DependencyProperty = DependencyProperty.Register("MyBackground",
GetType(LinearGradientBrush), GetType(RentAdjButtons),
New PropertyMetadata(New LinearGradientBrush(ColorConverter.ConvertFromString("#3366CC"), ColorConverter.ConvertFromString("#0000FF"), New System.Windows.Point(0.5, 0), New System.Windows.Point(0.5, 1))))
Private mMyBackground As New LinearGradientBrush
Public Property MyBackground() As LinearGradientBrush
Get
Return mMyBackground
End Get
Set(ByVal value As LinearGradientBrush)
mMyBackground = value
End Set
End Property
这是我的xmal
<Style TargetType="Com:RentAdjButtons">
<Setter Property="MyBackground" Value="{StaticResource DefaultBackground}" />
<Style.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="MyBackground" Value="{StaticResource SelectedButton}" />
</Trigger>
</Style.Triggers>
</Style>
当前我遇到的错误是"属性在触发器上不能无效"
预先感谢您的任何帮助
您可以使用默认情况下具有此属性的togglebutton。
Trigger.Property
必须是触发触发器的 DependencyProperty
。有关文档,请参见MSDN。您需要将类属性IsSelected
更改为DependencyProperty
。
另外,应使用 SetValue
和 GetValue
在MSDN中定义Mybackground的Getter/setter:
Public Property State() As Boolean
Get
Return CType(Me.GetValue(StateProperty), Boolean)
End Get
Set(ByVal value As Boolean)
Me.SetValue(StateProperty, value)
End Set
End Property
Public Shared ReadOnly StateProperty As DependencyProperty =
DependencyProperty.Register("State", GetType(Boolean), GetType(MyStateControl),
New PropertyMetadata(False))