Lower case URLs in Web Forms project
Question
I'm developing a web forms application in Visual Studio 2013 and would like to make the URLs lower case.
eg:
to
All the solutions I found were via IIS rewriting rules but I would like to solve it in the project itself.
1 answers
solution1
8 ACCPTED 2013-12-28 13:24:35
On global.asax on the BeginRequest you simple make your check, and the redirect as:
protected void Application_BeginRequest(Object sender, EventArgs e)
{
// place the lower case on string, to avoid make it again later.
string cTheLowerUrl = HttpContext.Current.Request.Path.ToLowerInvariant();
if (cTheLowerUrl != HttpContext.Current.Request.Path)
{
HttpContext.Current.Response.Redirect(cTheLowerUrl + HttpContext.Current.Request.Url.Query);
}
}
You can also check which file to force that rule, for example check only the aspx files:
string sExtOfFile = System.IO.Path.GetExtension(HttpContext.Current.Request.Path);
if (sExtOfFile.Equals(".aspx", StringComparison.InvariantCultureIgnoreCase))
{
string cTheLowerUrl = HttpContext.Current.Request.Path.ToLowerInvariant();
if (cTheLowerUrl != HttpContext.Current.Request.Path)
{
HttpContext.Current.Response.Redirect(cTheLowerUrl + HttpContext.Current.Request.Url.Query);
}
}
With Permanent Redirect
For the asp.net 4 version you can direct use the HttpResponse.RedirectPermanent For the asp.net 3.5 versions and before I make a similar redirect with asp.net but with 301 Moved Permanently response:
public static void RedirectPermanent(string url, bool endResponse = true)
{
HttpResponse responce = HttpContext.Current.Response;
#if DEBUG
if (url == null)
{
throw new ArgumentNullException("url");
}
if (responce == null)
{
throw new ArgumentNullException("url");
}
if (url.IndexOf('\n') >= 0)
{
throw new ArgumentException("Cannot_redirect_to_newline");
}
Page handler = HttpContext.Current.Handler as Page;
if ((handler != null) && handler.IsCallback)
{
throw new ApplicationException("Redirect_not_allowed_in_callback");
}
#endif
url = responce.ApplyAppPathModifier(url);
responce.Clear();
responce.TrySkipIisCustomErrors = true;
responce.StatusCode = 301;
responce.Status = "301 Moved Permanently";
responce.RedirectLocation = url;
// a direct header diferent way
// responce.AddHeader("Location", url);
responce.Write("<html><head><title>Object moved</title></head><body>\r\n");
responce.Write("<h2>Object moved to <a href=\"" + url + "\">here</a>.</h2>\r\n");
responce.Write("</body></html>\r\n");
if (endResponse)
{
responce.End();
}
}
and the code on the protected void Application_BeginRequest(Object sender, EventArgs e) will be:
string sExtOfFile = System.IO.Path.GetExtension(HttpContext.Current.Request.Path);
if (sExtOfFile.Equals(".aspx", StringComparison.InvariantCultureIgnoreCase))
{
string cTheLowerUrl = HttpContext.Current.Request.Path.ToLowerInvariant();
if (cTheLowerUrl != HttpContext.Current.Request.Path)
{
// for asp.net 4 and above
HttpContext.Current.Response.RedirectPermanent(cTheLowerUrl + HttpContext.Current.Request.Url.Query);
// or using the above function.
// RedirectPermanent(cTheLowerUrl + HttpContext.Current.Request.Url.Query);
}
}
Comments
I first test it and is working, is faster than make rules, and you have more direct control on it.
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