Question

是否可以在运行时将数据触发器附加到样式？我现在经历了几次（非工作）代码，似乎无法找到我出错的地方。

这是我用来附加样式和触发器的方法：

private void AttachVisibilityTrigger(Control ctrl)
{
    Style stl = new System.Windows.Style();
    DataTrigger dt = new DataTrigger();
    PropertyInfo pi = _entity.GetType().GetProperty(this.SecondaryOptions[ctrl.Name]);
    Type controlType = this.GetControlTypeForProperty(ref dt, pi); //gets the control type based on the property name and then sets the value for the DataTrigger for which I want the visibility to be hidden
    Binding b = this.GetVisibilityBindingByControlType(controlType); //returns a new Binding with the appropriate Path set that corresponds to the bound property value (e.g IsChecked for CheckBoxes, Text for TextBoxes, SelectedValue for Comboboxes, etc)

    b.ElementName = this.SecondaryOptions[ctrl.Name];
    dt.Binding = b;
    dt.Setters.Add(new Setter(Control.VisibilityProperty, System.Windows.Visibility.Hidden));

    stl.Triggers.Add(dt);
    ctrl.Style = stl;
}

Answer 1

我非常确定绑定刚刚破解，我在代码中创建了类似的样式并且它们起作用。

特别是这条线看起来很可疑：

b.ElementName = this.SecondaryOptions[ctrl.Name];

（如果你想绑定到控件本身，请使用RelativeSource。）

您是否检查过VisualStudio的输出窗口是否存在绑定错误？

在运行时附加DataTriggers

1 个答案: