Question

Currently I’m having trouble adding custom/my own css files to my SharePoint site. I add the custom/my own css files via the c# files (CssLink) as a web part and have them applied to my site’s javascript files. Trouble is, whenever the css files were applied, my site goes back to the default blue-ish SharePoint theme color.

Is there any quick and simple way to avoid that from happening?

Thanks.

Answer 1

You can use this method to register a css file from a WebPart

Microsoft.SharePoint.WebControls.CssRegistration.Register("/.../mystyles.css")

or you can add the css file to the content place holder with the id “PlaceHolderAdditionalPageHead” which is present in the master page like this

var placeholder= Page.FindControl("PlaceHolderAdditionalPageHead");
var cssLink = new Literal();
cssLink.Text = "text";
placeholder.Controls.Add(cssLink);