Response.Redirect

Ramco Ramco

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

3 Replies

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Sachin Singh5y ago
Accepted 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));
}
}
Ramco Ramco5y ago
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
Sachin Singh5y ago
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.