How to add Script in the Page dynamically

问题

I use asp.net 4 and c#.

I have a Web User Control inside a Web From page. When I include the Web User Control I would like also include programmatically some script within the tags for the final generated page.

Any idea how to do it? Maybe ScriptManager could help on this?

Please provide me a sample of code I'm pretty new at developing thanks for your time on this!

回答1:

Peter's answer will add to the page, but not the head element. Take a look at this article:

http://weblogs.asp.net/johnkatsiotis/archive/2008/08/08/add-scripts-to-head-dynamically.aspx

It provides a nice clean way to add a script to the head element using an extension method.

回答2:

Take a look at RegisterClientScriptBlock of the ClientScriptManager.

From MSDN:

...
ClientScriptManager cs = Page.ClientScript;

// Check to see if the client script is already registered.
if (!cs.IsClientScriptBlockRegistered(csType, csName))
{
  StringBuilder csText = new StringBuilder();
  csText.Append("<script type=\"text/javascript\"> function DoClick() {");
  csText.Append("Form1.Message.value='Text from client script.'} </");
  csText.Append("script>");
  cs.RegisterClientScriptBlock(csType, csName, csText.ToString());
}
...

回答3:

I realize that this is an old question, but there is a much simpler way.

Try This:

Page.Header.Controls.Add(
    new LiteralControl(
        "<script>alert('Literal Added to <Head>.');</script>"
    )
);

If you want to add the script at a particular index of the <head> you can use

AddAt(index, new LiteralControl(...)) where index 0 equals the top of the <head>

Also, joelmdev mentioned in a comment you need to add runat="server" in your head tag e.g. <head id="head1" runat="server">

来源：https://stackoverflow.com/questions/6928420/how-to-add-script-in-the-page-head-head-dynamically

标签

ASP.NET

html

scriptmanager

How to add Script in the Page <head></head> dynamically

问题

回答1:

回答2:

回答3: