How do I add a css class to the TempData output?
The TempData output is plain text and putting a div around it will leave a formatted but empty div on the screen if there is no TempData.
Is there a way to apply a class to it so that it only shows when the TempData item is set?
Other than writing the div code into the TempData, which 开发者_如何学Goseems like a horrible idea.
I would probably write a helper:
public static class HtmlExtensions
{
public static string Message(this HtmlHelper htmlHelper, string key)
{
var message = htmlHelper.ViewContext.TempData[key] as string;
if (string.IsNullOrEmpty(message))
{
return string.Empty;
}
var builder = new TagBuilder("div");
builder.SetInnerText(message);
return builder.ToString();
}
}
Which could be used like so:
<%= Html.Message("someKeyToLookInTempData") %>
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