expando

Reflect on an ExpandoObject

三世轮回 提交于 2019-12-07 03:57:29
问题 I have written a nifty function that will accept a system.object , reflect on its properties and serialize the object into a JSON string. It looks like this: public class JSONSerializer { public string Serialize(object obj) Now, I want to be able to do this to serialize a dynamic/ExpandoObject, but because my serializer uses reflection, it isn't able to do it. What's the workaround? public class Test { public dynamic MakeDynamicCat() { dynamic newCat = new ExpandoObject(); newCat.Name =

How to create dynamic fields in Google App Engine expando class?

有些话、适合烂在心里 提交于 2019-12-06 05:14:49
问题 I have a db expando class called widget. I'm passing in a json string and converting it to a dict and then adding it to the datastore. My question is how can I loop through my dict to create dynamic fields. widget = Widget.get_by_key_name(key_name) widget.name = self.request.get('wname') fields = simplejson.loads(self.request.get('wcontents')) for k,v in fields.iteritems(): widget.k = v This renders "k" as my field name as oppose to the k value in the dict. 回答1: The syntax widget.k references

Reflect on an ExpandoObject

 ̄綄美尐妖づ 提交于 2019-12-05 06:48:34
I have written a nifty function that will accept a system.object , reflect on its properties and serialize the object into a JSON string. It looks like this: public class JSONSerializer { public string Serialize(object obj) Now, I want to be able to do this to serialize a dynamic/ExpandoObject, but

How to create dynamic fields in Google App Engine expando class?

試著忘記壹切 提交于 2019-12-04 10:38:51
I have a db expando class called widget. I'm passing in a json string and converting it to a dict and then adding it to the datastore. My question is how can I loop through my dict to create dynamic fields. widget = Widget.get_by_key_name(key_name) widget.name = self.request.get('wname') fields =

Using jQuery's datastore vs. expando properties

家住魔仙堡 提交于 2019-12-03 04:23:34
问题 I'm developing code using jQuery and need to store data associated with certain DOM elements. There are a bunch of other questions about how to store arbitrary data with an html element, but I'm more interested in why I would pick one option over the other. Say, for the sake of extremely simplified argument, that I want to store a "lineNumber" property with each row in a table that is "interesting". Option 1 would be to just set an expando property on each DOM element (I hope I'm using the

How to databind a gridview to an ExpandoObject

房东的猫 提交于 2019-12-01 00:59:27
问题 When I try to databind an ASP.NET GridView to an IEnumerable<ExpandoObject> using an ObjectDataSource , I get the following exception. System.Web.HttpException (0x80004005): DataBinding: 'System.Dynamic.ExpandoObject' does not contain a property with the name 'StoreID'. Anyone know how I could databind to ExpandoObjects ? 回答1: The opensource framework Impromptu-Interface can do this. It has a method for exposing dynamic object properties for reflection by passing in a dictionary of property

What is the Dart “Expando” feature about, what does it do?

半世苍凉 提交于 2019-11-30 14:44:33
问题 Have been seeing the term "Expando" used recently with Dart. Sounds interesting. The API did not provide much of a clue to me. An example or two could be most helpful! (Not sure if this is related, but I am most anxious for a way to add methods (getters) and/or variables to a class. Hoping this might be a key to solving this problem. (hint: I am using the Nosuchmethod method now and want to be able to return the value of the unfound method.)) Thanks in advance, _swarmii 回答1: Expandos allow

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