如何通过asp.net MVC EditorFor获取生成的HTML ID [英] How to get the HTML id generated by asp.net MVC EditorFor
问题描述
我使用HTML助手来呈现我的字段:
I use the HTML Helpers to render my fields:
<%=Html.EditorFor(m => m.User.Surname)%>
和输出将会是这样的:
<input class="text-box single-line" id="User_Surname"
name="User.Surname" type="text" value="" />
助手使用的className +。 è字段名来构建ID。结果
我需要的ID传递给jQuery函数。有没有办法把它没有硬编码呢?
也许一个帮手,可以使用ASP.NET MVC2约定?
The helper uses the className + '.' è fieldName to build the id.
I need to pass the id to a jQuery function. Is there a way to have it without hardcoding it?
Maybe an helper which can use the ASP.NET MVC2 conventions?
推荐答案
我已经按照Mac的答案的指示<一个href=\"http://stackoverflow.com/questions/2512809/has-anyone-implement-radiobuttonlistfort-for-asp-net-mvc\">here我已经建立了自己的自定义扩展:
I've followed the instructions of Mac's answer here and I've built my own custom extension:
public static class HtmlHelperExtensions
{
public static string HtmlIdNameFor<TModel, TValue>(
this HtmlHelper<TModel> htmlHelper,
System.Linq.Expressions.Expression<Func<TModel, TValue>> expression)
{
return (GetHtmlIdNameFor(expression));
}
private static string GetHtmlIdNameFor<TModel, TValue>(Expression<Func<TModel, TValue>> expression)
{
if (expression.Body.NodeType == ExpressionType.Call)
{
var methodCallExpression = (MethodCallExpression)expression.Body;
string name = GetHtmlIdNameFor(methodCallExpression);
return name.Substring(expression.Parameters[0].Name.Length + 1).Replace('.', '_');
}
return expression.Body.ToString().Substring(expression.Parameters[0].Name.Length + 1).Replace('.', '_');
}
private static string GetHtmlIdNameFor(MethodCallExpression expression)
{
var methodCallExpression = expression.Object as MethodCallExpression;
if (methodCallExpression != null)
{
return GetHtmlIdNameFor(methodCallExpression);
}
return expression.Object.ToString();
}
}
我已经导入我的应用程序的命名空间。
I've imported my application's namespace
<%@ Import Namespace="MvcApplication2" %>
终于我可以用我的code是这样的:
and finally I can use my code like this:
<%=Html.HtmlIdNameFor(m=>m.Customer.Name)%>
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