public static void RedirectToPage(string destinationPg, HttpContext context, NameValueCollection qsVals) { if (context == null) { throw new ArgumentNullException("context", "You must pass the current HttpContext object for this method to function."); } else if (context.Response == null || context.Request == null) { throw new Exception("Specified HttpContext must contain both a valid request and response object."); } string redirectUrl = PageRedirect.GetUrlPefix(destinationPg); System.Text.StringBuilder sb = new System.Text.StringBuilder(); if (qsVals != null) { for (int i = 0; i < qsVals.Count; i++) { sb.AppendFormat("&{0}={1}", context.Server.UrlEncode(qsVals.Keys[i]), context.Server.UrlEncode(qsVals[i])); } } redirectUrl += "?ReturnUrl=" + PageRedirect.GetCurrentPageEncoded(context) + sb.ToString(); context.Response.Redirect(redirectUrl, true); }
public static void SendBackToCallingPage(string destinationPg, HttpContext context, NameValueCollection additionalParams, params string[] includedParams) { if (context == null) { throw new ArgumentNullException("context", "You must pass the current HttpContext object for this method to function."); } else if (context.Response == null || context.Request == null) { throw new Exception("Specified HttpContext must contain both a valid request and response object."); } if (string.IsNullOrEmpty(destinationPg)) { throw new ArgumentNullException("desinationPg", "You must specify the destination page you want to redirect to."); } string responseUrl = PageRedirect.GetUrlPefix(destinationPg); System.Text.StringBuilder sb = new System.Text.StringBuilder(); if (includedParams.Length > 0) { // We're using a delegate to define an 'anonymous' method, since the Array.ConvertAll // requires that we create a 'Converter' delegate pointed to a method, but this // saves the overhead of having a 'real' method call for one line of code. string[] lVals = Array.ConvertAll <string, string>(includedParams, new Converter <string, string>(delegate(string val) { return(val.ToLower()); })); HttpRequest req = context.Request; for (int i = 0; i < req.QueryString.Count; i++) { if (lVals.Contains(req.QueryString.GetKey(i).ToLower())) { sb.AppendFormat("&{0}={1}", context.Server.UrlEncode(req.QueryString.GetKey(i)), context.Server.UrlEncode(req.QueryString.Get(i))); } } } if (additionalParams != null) { for (int i = 0; i < additionalParams.Count; i++) { sb.AppendFormat("&{0}={1}", context.Server.UrlEncode(additionalParams.GetKey(i)), context.Server.UrlEncode(additionalParams[i])); } } string qs = sb.ToString(); if (!string.IsNullOrEmpty(qs)) { responseUrl += "?" + qs.TrimStart('&'); } context.Response.Redirect(responseUrl); }