Adding style sheets to web pages at runtime.
I have 2 methods here.
1) Using a literal control
ASPX Code
VB Code:
<HEAD>
<asp:Literal id="StyleSheet" runat="Server" />
</HEAD>
Code Behind
VB Code:
Protected WithEvents StyleSheet As System.Web.UI.WebControls.Literal
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
StyleSheet.Text = "<LINK href=Badger.css type=""text/css"" rel=""stylesheet"">"
End Sub
2) Using code inline
ASPX Code
VB Code:
<HEAD>
<LINK href="<%=gStylesheet%>" type="text/css" rel="stylesheet">
</HEAD>
Code Behind
VB Code:
Public gStyleSheet As String
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
gStyleSheet = "Badger.css"
End Sub
Which one of these methods would people use?
Also, I don't suppose anyone knows how to write a server side control that would allow me to do the above:
VB Code:
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
MyStyleSheetControl.CSSFile = "Badger.css"
End Sub
Regards,
Woof
Re: Adding style sheets to web pages at runtime.
Personally I would use the HTML approach because you can then change stylesheets and designs without requiring a recompile :)
Re: Adding style sheets to web pages at runtime.
Errr...HTML metho? Method 1 or 2?
Woka
Re: Adding style sheets to web pages at runtime.
You could even use the HtmlGenericControl like so:
ASPX Code
Code:
<head>
<link id="css1" runat="server" type="text/css" rel="stylesheet">
</head>
Code behind
Code:
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
css1.Attributes("href") = "Badger.css"
End Sub
DJ
Re: Adding style sheets to web pages at runtime.
dj4uk, thanks for that.
I think you gave me that method a few months back if I can remember.
Oh you forgot the following from your above post:
VB Code:
Protected css1 As HtmlGenericControl
The is one slight problem with the code you posted, which is why I am re-visiting this problem.
The line:
VB Code:
<link id="css1" runat="server" type="text/css" rel="stylesheet">
Actually fails with a parser error :(
It requires a / at the end, like:
VB Code:
<link id="css1" runat="server" type="text/css" rel="stylesheet"/>
This now works a treat. Cool :D
BUT...thanks to the buggy IDE, .NET randomly sees the LINK tag and says "Oooo...there's a / at the end...I don't need that", and then strips it out.
This means everytime you compile your app you must sift through the ASPX pages and check to see if the IDE hasn't gone into spak mode :(
Don't suppose you know a way around this?
Woka
Re: Adding style sheets to web pages at runtime.
Well spotted - didn't check the code before I posted so I'm not surprised I missed something!
I don't use the link tag myself - I use the following syntax for external CSS:
Code:
<head>
<style type="text/css">
@import url("nutter.css");
</style>
</head>
You could use the HtmlGenericControl here again like so:
Code:
<style id="css1" runat="server" type="text/css"></style>
and then
Code:
Protected css1 As HtmlGenericControl
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
css1.InnerText = "@import url(""nutter.css"");"
End Sub
This might get around the bug you are experiencing with the link tag.
DJ
Re: Adding style sheets to web pages at runtime.
Quote:
Originally Posted by Wokawidget
dj4uk, thanks for that.
BUT...thanks to the buggy IDE, .NET randomly sees the LINK tag and says "Oooo...there's a / at the end...I don't need that", and then strips it out.
This means everytime you compile your app you must sift through the ASPX pages and check to see if the IDE hasn't gone into spak mode :(
Don't suppose you know a way around this?
Woka
The IDE does that because its using the schema as specified in your schema tag (probably a few lines right above that).
Code:
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
According to that schema, a link tag shouldn't have an inline end slash.
The file is located (for Vs 2003) at:
C:\Program Files\Microsoft Visual Studio .NET 2003\Common7\Packages\schemas\html\ie5_0.xsd
If you open it up, and do a find for:
<xsd:element name="link"
you will find the attributes that define how VS handles it according to the schema. I don't know much more about it defines it will strip away the inline end tag... but a few hours will probably illuminate the correct one for you. Div's for instance always need a closing tag, so perhaps try comparing it against that.
Re: Adding style sheets to web pages at runtime.
I have used a HttpHandler to dynamicly select/generate the .css file on demand.
