静态方法/功能与Func T的结合. XAML中的属性 [英] Binding of static method/function to Func<T> property in XAML
问题描述
我正在使用XAML创建对象树,并且其中一个节点如下所示:
I'm working on using XAML to create an object tree and one of the nodes looks like this:
public class ExecuteMethod : INode
{
#region Implementation of INode
public bool Evaluate()
{
return Function != null && Function();
}
public string Name { get; set; }
private string _type;
public string Type
{
get
{
if (string.IsNullOrEmpty(_type))
{
_type = GetType().Name;
}
return _type;
}
}
#endregion
public Func<bool> Function { get; set; }
}
我的目标对于使XAML和后面的代码尽可能整洁至关重要,而现在我正在为每个函数创建包装器属性的情况并非如此:
My goal is essential to make the XAML and code behind as clean as possible which isn't the case right now where I'm creating wrapper properties for every function:
public static Func<bool> Func1 { get { return Method1; } }
public static bool Method1()
{
//Do stuff here
return true;
}
上面的代码的xaml看起来像这样:
and the xaml looks like this for the above code:
<Root
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns="clr-namespace:XamlBT;assembly=XamlBT"
xmlns:d="clr-namespace:TestBT;assembly=TestBT">
<Root.Child>
<Sequence Name="sequence1" >
<ExecuteMethod Name="e1.1" Function="{x:Static d:Program.Func1}" />
<Selector Name="selector1" >
<ExecuteMethod Name="e2.1" Function="{x:Static d:Program.Func1}" />
</Selector>
</Sequence>
</Root.Child>
我想知道是否有一种快速简便的方法将方法/函数绑定到Func属性,我在这里说的是方法,而不是执行的方法/函数的值. (我可以想到在valueConverter或ExecuteMethod节点/类中使用一些反射魔术,但是感觉很肮脏和奇怪) 我希望XAML看起来如何的示例:
I would like to know if there's a quick and easy way to bind methods/functions to the Func property, I'm talking about the method here NOT the value of the executed method/function. (I can think of using some reflection magic in a valueConverter or inside the ExecuteMethod node/class but that just feels dirty and weird) An example of how I'd like the XAML to look:
<Root
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns="clr-namespace:XamlBT;assembly=XamlBT"
xmlns:d="clr-namespace:TestBT;assembly=TestBT">
<Root.Child>
<Sequence Name="sequence1" >
<ExecuteMethod Name="e1.1" Function="{x:Static d:Program.Method1}" />
<Selector Name="selector1" >
<ExecuteMethod Name="e2.1" Function="{x:Static d:Program.Method1}" />
</Selector>
</Sequence>
</Root.Child>
非常感谢您的帮助,对于英语语法不好,这不是我的母语:)
Thanks for any help in advance and sorry for the bad English grammar, it's not my native language :)
推荐答案
我可以想到几种使它看起来更整洁的方法,但是您要的内容没有绑定语法.我想您最满意的是写您的自己的标记扩展名,因此您可以使其看起来像{d:StaticMethod Program.Method1}
,但是您肯定必须使用反射,但是缓存起来并不容易,并且比值转换器要好.
I can think of couple ways to make it look cleaner but there isn't a binding syntax for what you are asking. I'm guessing what you would be most happy with would be writing your own markup extension so you could make it look like {d:StaticMethod Program.Method1}
, but you would definitely have to use reflection, but it would be trivial to cache and would look better than a value converter.
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