[英]simple binding problem
I have a rather simple problem, but I am unable to get my head around it... I have a class that inherits from UserControl
. 我有一个相当简单的问题,但我无法解决……我有一个继承自
UserControl
的类。 It has an AxisColor
DependencyProperty of type Color
. 它具有类型
Color
的AxisColor
DependencyProperty。 In the XAML structure of the class I have <ms3DTools:ScreenSpaceLines3D Thickness="2" Points="0,0,0 100,0,0" Color="{Binding Mode=OneWay, Path=AxisColor}"
. 在该类的XAML结构中,我具有
<ms3DTools:ScreenSpaceLines3D Thickness="2" Points="0,0,0 100,0,0" Color="{Binding Mode=OneWay, Path=AxisColor}"
。 The binding does not work. 绑定无效。 What am I doing wrong?
我究竟做错了什么?
You probably want to add RelativeSource={RelativeSource Self}
to the binding expression. 您可能想将
RelativeSource={RelativeSource Self}
到绑定表达式中。 Otherwise, you are binding to the DataContext property. 否则,您将绑定到DataContext属性。
If you want UI binding then you have to specify ElementName , more options here . 如果要进行UI绑定,则必须指定ElementName , 此处有更多选项。 If you want data binding then make sure you have DataContext set up correctly.
如果要进行数据绑定,请确保已正确设置DataContext。
If you have a UserControl that needs to get a Property AxisColor
from a class, you need to set your DataContext of that UserControl to the class that contains AxisColor. 如果您有一个需要从类中获取属性
AxisColor
的UserControl,则需要将该UserControl的DataContext设置为包含AxisColor的类。
myUserControl.DataContext = myClassInstance;
Otherwise, your user control does not know where to grab the property from. 否则,您的用户控件将不知道从何处获取属性。
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