Response.Redirect

Question

Hi

How the below line works

Response.Redirect(String.Format("~/Error/{0}/?message={1}", action, exception.Message));

I have only 1 Action in Controller

public class ErrorController : Controller
{
public ActionResult Index(string message)
{
ViewBag.ErrorMessage = message;
return View();
}

}

Thanks

Sachin Singh · Answer

inside the switch statement, you are setting the Action. If you have no plan to modify the code in the future and use a different view for different status codes then simply redirect without the switch protected void Application_Error(object sender, EventArgs e) { Exception exception = Server.GetLastError(); Response.Clear(); HttpException httpException = exception as HttpException; if (httpException != null) { string action= "Index" ; // clear error on server Server.ClearError(); Response.Redirect(String.Format( "~/Error/{0}/?message={1}" , action, exception.Message)); } }

Sachin Singh · Answer

the line Response.Redirect(String.Format( "~/Error/{0}/?message={1}" , action, exception.Message)); is equivalent to url= "/Error/Index?message='your Message'" ; string.Format is just a way of wring strings more easily. Response.Redirect invokes the url.

Ramco Ramco · Answer

Hi Sachin How it assumes that Action is Index. ***** Global.asax protected void Application_Error(object sender, EventArgs e) { Exception exception = Server.GetLastError(); Response.Clear(); HttpException httpException = exception as HttpException; if (httpException != null) { string action; switch (httpException.GetHttpCode()) { case 404: // page not found action = "HttpError404"; break; case 500: // server error action = "HttpError500"; break; default: action = "General"; break; } // clear error on server Server.ClearError(); Response.Redirect(String.Format("~/Error/{0}/?message={1}", action, exception.Message)); } } Thanks