How use tilda in respone.redirect

Is it possible to add https:// to response.redirect("~/order form.aspx") I use the same codebehind for several web sites and I use response.redirect("~/order form.aspx")  so the code can be easly used between different sites. Problem is some sites are secure. so i want to add https:// to the response.redirect("~/order form.aspx") . ANy ideas how I can do this?
whiwexAsked:
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SriVaddadiCommented:
var url = String.Format("https://{0}{1}",  
      Request.ServerVariables["HTTP_HOST"] ,
      ResolveUrl("~/order form.aspx"));
 
      Response.Redirect(url);

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whiwexAuthor Commented:
Thanks That worked great
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Visual Basic.NET

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