是否有注册的＆lt内部脚本System.Web.UI.ClientScriptManager方法; HEAD＆GT;标签？ [英] Is there a System.Web.UI.ClientScriptManager method that registers scripts inside the <head> tag?
问题描述
我知道这是严格确定把＆LT;脚本＆gt;在体内标签，但在整洁的利益，我想使用 System.Web.UI.ClientScriptManager 注册在℃的脚本; HEAD＆GT; 我的网页。有没有做到这一点的方法？
I know it's strictly OK to put <script> tags in the body, but in the interest of neatness I'd like to use System.Web.UI.ClientScriptManager to register a script in the <head> of my page. Is there a method to accomplish this?
先谢谢了。
推荐答案
在这种情况下，我通常是在我的母版页的标签添加的ContentPlaceHolder。
In these cases I usually add a ContentPlaceHolder in the tag of my Master Page.
另外，我使用的方法（通常在实用类或PageBase类）把剧本字符串在ASP.Net背景下，像这样一个列表，并将其存储：
Alternately I've used a method (usually in a utility class or PageBase class) that puts the script string in a List and stores it in the ASP.Net Context like so:
List<string> javaScriptUrls = new List<string>();
url = url.ToLower();
javaScriptUrls = Context.Items[JS_KEY] as List<string>;
if (javaScriptUrls == null)
{
javaScriptUrls = new List<string>();
javaScriptUrls.Add(url);
}
else
{
if (!javaScriptUrls.Contains(url))
javaScriptUrls.Add(url);
}
Context.Items[JS_KEY] = javaScriptUrls;
然后在母版的preRender，它从上下文中读取名单，并在标题中建立的标签。
Then OnPreRender of the MasterPage, it reads this List from the Context and builds tags in the header.
List<string> _javaScript = Context.Items[JS_KEY] as List<string>;
foreach (string js in _javaScript)
{
HtmlGenericControl script = new HtmlGenericControl();
script.TagName = "script";
script.Attributes.Add("type", "text/javascript");
if (js.StartsWith("~/"))
script.Attributes.Add("src", head.ResolveUrl(js));
else
script.Attributes.Add("src", js);
head.Controls.Add(script);
AddHeaderLineBreak(head);
}
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