如何将字符串格式化为正确的URL

Question

On my login page I have a returnUrl query string parameter to bring you back to the page you wanted to visit before you were redirected to the login page.

Ie http://localhost/login?returnUrl=//testsection/testpage

If the returnUrl has multiple slashes it will redirect to http://testsection/testpage instead of http://localhost/testsection/testpage

Is there a way I can take a string and format it to be valid?

Answer 1

返回url验证重定向后

Response.Redirect("http://" + (HttpContext.Current.Request.Url.Host + Request["returnUrl"]).Replace("//","/"));