blocks|key|1707816|text|public+static+string+TextBox(this+HtmlHelper+html,+string+value,+string+labelText,+string+textBoxId,+object+textBoxHtmlAttributes,+object+labelHtmlAttributes){}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1707817|这将接受文本框应该具有的id值和标签应该引用的id值。如果使用者现在不在textBoxHtmlAttributes中包含"id“属性，该方法将创建一个不正确的标签。|unstyled|1707818|我可以通过反射检查这个属性是否被添加到labelHtmlAttributes对象中。如果是这样，我想要添加它，或者创建一个新的匿名对象。但是因为我不能通过遍历旧的属性并添加我自己的"id“属性来创建一个新的匿名类型，所以我有点卡住了。|1707819|具有强类型ID属性和匿名类型"attributes“属性的容器需要重写代码，这些重写不符合”添加id字段“的要求。|1707820|希望这种反应是可以理解的。这是一天的末日，我的大脑再也不能正常工作了..|1707821|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|P|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|F|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|F|7|T|8|@]|9|@]|A|$]]]|N|$]]

<pre><code>public static string TextBox(this HtmlHelper html, string value, string labelText, string textBoxId, object textBoxHtmlAttributes, object labelHtmlAttributes){}
</code></pre>

This would accept the id value the textbox should have and the label should refer to.
If the consumer now doesn't include the "id" property in the textBoxHtmlAttributes, the method will create an incorrect label.

I can check through reflection if this attribute is added in the labelHtmlAttributes object. If so, I want to add it or create a new anonymous object that has it added.
But because I can't create a new anonymous type by walking through the old attributes and adding my own "id" attribute, I'm kind of stuck.

A container with a strongly typed ID property and then an anonymous typed "attributes" property would require code rewrites that don't weigh up to the "add an id field" requirement.

Hope this response is understandable. It's the end of the day, can't get my brains in line anymore..

blocks|key|1492819|text|下面的扩展类将为您提供所需的内容。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1492820|public+static+class+ObjectExtensions
{
++++public+static+IDictionary<string,+object>+AddProperty(this+object+obj,+string+name,+object+value)
++++{
++++++++var+dictionary+=+obj.ToDictionary();
++++++++dictionary.Add(name,+value);
++++++++return+dictionary;
++++}

++++//+helper
++++public+static+IDictionary<string,+object>+ToDictionary(this+object+obj)
++++{
++++++++IDictionary<string,+object>+result+=+new+Dictionary<string,+object>();
++++++++PropertyDescriptorCollection+properties+=+TypeDescriptor.GetProperties(obj);
++++++++foreach+(PropertyDescriptor+property+in+properties){
++++++++++++result.Add(property.Name,+property.GetValue(obj));
++++++++}
++++++++return+result;
++++}
}|code-block|syntax|javascript|1492821|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The following extension class would get you what you need.

<pre><code>public static class ObjectExtensions
{
 public static IDictionary&lt;string, object&gt; AddProperty(this object obj, string name, object value)
 {
 var dictionary = obj.ToDictionary();
 dictionary.Add(name, value);
 return dictionary;
 }

 // helper
 public static IDictionary&lt;string, object&gt; ToDictionary(this object obj)
 {
 IDictionary&lt;string, object&gt; result = new Dictionary&lt;string, object&gt;();
 PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(obj);
 foreach (PropertyDescriptor property in properties){
 result.Add(property.Name, property.GetValue(obj));
 }
 return result;
 }
}
</code></pre>

blocks|key|1492894|text|如果您正在尝试扩展此方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1492895|public+static+MvcHtmlString+ActionLink(this+HtmlHelper+htmlHelper,+string+linkText,+string+actionName,+object+routeValues);|code-block|syntax|javascript|1492896|尽管我确信Khaja的对象扩展会起作用，但您可以通过创建RouteValueDictionary并传入routeValues对象，从上下文添加附加参数，然后使用接受RouteValueDictionary而不是对象的ActionLink重载返回，从而获得更好的性能：|1492897|这应该能起到作用：|1492898|++++public+static+MvcHtmlString+MyLink(this+HtmlHelper+helper,+string+linkText,+string+actionName,+object+routeValues)
++++{
++++++++RouteValueDictionary+routeValueDictionary+=+new+RouteValueDictionary(routeValues);

++++++++//+Add+more+parameters
++++++++foreach+(string+parameter+in+helper.ViewContext.RequestContext.HttpContext.Request.QueryString.AllKeys)
++++++++{
++++++++++++routeValueDictionary.Add(parameter,+helper.ViewContext.RequestContext.HttpContext.Request.QueryString[parameter]);
++++++++}

++++++++return+helper.ActionLink(linkText,+actionName,+routeValueDictionary);
++++}|1492899|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

If you're trying to extend this method:

<pre><code>public static MvcHtmlString ActionLink(this HtmlHelper htmlHelper, string linkText, string actionName, object routeValues);
</code></pre>

Although I'm sure Khaja's Object extensions would work, you might get better performance by creating a RouteValueDictionary and passing in the routeValues object, add your additional parameters from the Context, then return using the ActionLink overload that takes a RouteValueDictionary instead of an object:

This should do the trick:

<pre><code> public static MvcHtmlString MyLink(this HtmlHelper helper, string linkText, string actionName, object routeValues)
 {
 RouteValueDictionary routeValueDictionary = new RouteValueDictionary(routeValues);

 // Add more parameters
 foreach (string parameter in helper.ViewContext.RequestContext.HttpContext.Request.QueryString.AllKeys)
 {
 routeValueDictionary.Add(parameter, helper.ViewContext.RequestContext.HttpContext.Request.QueryString[parameter]);
 }

 return helper.ActionLink(linkText, actionName, routeValueDictionary);
 }
</code></pre>

I use an anonymous object to pass my Html Attributes to some helper methods.
If the consumer didn't add an ID attribute, I want to add it in my helper method.

How can I add an attribute to this anonymous object?

Add property to anonymous type after creation

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我使用匿名对象将Html属性传递给一些帮助器方法。如果使用者没有添加ID属性，我想将其添加到我的helper方法中。如何将属性添加到此匿名对象？

问创建后将属性添加到匿名类型
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