Can I dynamically add HTML within a div tag from C# on load event?

问题

Mind you, I am using master pages, but can I locate a div within the page and throw some html in there? Thanks.

回答1:

You can add a div with runat="server" to the page:

<div runat="server" id="myDiv">
</div>

and then set its InnerHtml property from the code-behind:

myDiv.InnerHtml = "your html here";

If you want to modify the DIV's contents on the client side, then you can use javascript code similar to this:

<script type="text/javascript">
    Sys.Application.add_load(MyLoad);
    function MyLoad(sender) {
        $get('<%= div.ClientID %>').innerHTML += " - text added on client";
    }
</script>

回答2:

Use asp:Panel for that. It translates into a div.

回答3:

Remember using

myDiv.InnerHtml = "something";

will replace all HTML elements in myDIV. you need to append text to avoid that.In that this may help

myDiv.InnerHtml = "something" + myDiv.InnerText;

any html control in myDiv but not ASP html controls(as they are not rendered yet).

回答4:

You could reference controls inside the master page this way:

void Page_Load()
{
    ContentPlaceHolder cph;
    Literal lit;

    cph = (ContentPlaceHolder)Master.FindControl("ContentPlaceHolder1");

    if (cph != null) {
        lit = (Literal) cph.FindControl("Literal1");
        if (lit != null) {
            lit.Text = "Some <b>HTML</b>";
        }
    }

}

In this example you have to put a Literal control in your ContentPlaceholder.

回答5:

You want to put code in the master page code behind that inserts HTML into the contents of a page that is using that master page?

I would not search for the control via FindControl as this is a fragile solution that could easily be broken if the name of the control changed.

Your best bet is to declare an event in the master page that any child page could handle. The event could pass the HTML as an EventArg.

来源：https://stackoverflow.com/questions/467016/can-i-dynamically-add-html-within-a-div-tag-from-c-sharp-on-load-event

标签

ASP.NET

.net-3.5

master-pages