I have link
http://localhost:3163/PaymentOrder?AgentCode=&InvoiceNo=&AgentName=&FromDate=&fromDate=12%2F11%2F2013&FromDate=12%2F11%2F2013+9%3A08%3A01+SA&toDate=12%2F11%2F2013
after click button "Delete" the page should be redirect to "Index"
return RedirectToAction("Index","PaymentOrder");
But i want keep link same as first, i don't know what method, please help me. thanks
I can fix it, i save session in
public ActionResult Index{
Session["LastPage"] = Request.Url.ToString();
}
after I'm
return Redirect(Session["LastPage"] as String);
You can pass the query strings to the third parameter of RedirecToAction
return RedirectToAction("Index","PaymentOrder", new { fromDate = model.FromDate });
Or pass the entire model as well, that contains the properties similar to your query strings
return RedirectToAction("Index","PaymentOrder", new { paymentModel = model });
As your query string is quite long, it would probably be better to write an extension method and use that instead, to keep your controllers thin. I haven't tested this, but something like this should work:
public static RouteValueDictionary ToRouteDictionary(this NameValueCollection nameValues)
{
if (nameValues == null || nameValues.HasKeys() == false)
return new RouteValueDictionary();
var routeValues = new RouteValueDictionary();
foreach (var key in nameValues.AllKeys)
routeValues.Add(key, nameValues[key]);
return routeValues;
}
Then in your controller:
return RedirectToAction("Index","PaymentOrder", Request.QueryString.ToRouteDictionary());
Just don't redirect but return the view, the URL will remain the same.
Related
return RedirectToAction("ActionName", new { lst = finalData });
[HttpGet]
Public ActionResult AcionName(IGrouping<string, ModelName> lst)
{
return View("ActionName", lst);
}
i use this code to redirect my list to another action but this is not working.
You can assign the finalData to a Session or TempData variable.
TempData["FinalData "] = finalData;
return RedirectToAction("ActionName");
From this answer: "TempData Allows you to store data that will survive for a redirect. Internally it uses the Session, it's just that after the redirect is made the data is automatically evicted"
Then in your GET Action Method,
Public ActionResult AcionName()
{
var finalData = TempData["FinalData"] as IGrouping<string, ModelName>;
return View("ActionName", finalData);
}
The problem is, if you were to refresh after the redirect, then finalData would be null. So, in that case you use Session["FinalData"] or get the data from the Database in your Get method again. You can go through the answer I have linked for disadvantages of using TempData.
I have never worked with actionfilter so i dont really know how to use it, ive done som reseach but i dont completly understand it. But basicly im going to create a new controller, and i want my _Viewstart.cshtml to use this controller. The problem is that i dont know how to use this code to an actionfilter and then call this controller in _viewstart.
The code that i want in my controller is.
var TemplateIDSession = Session["TemplateID"];
if (TemplateIDSession != null)
{
int tempID = (int)TemplateIDSession;
var template = servicetemp.GetEntry(tempID);
var servicetemp = ServiceFactory.Instance.CreateTemplateService();
Response.ContentType = "text/css";
return RazorEngine.Razor.Parse(System.IO.File.ReadAllText(Server.MapPath("Content/Site.css")));
I think you should go about this in a different way, by using a HTML Helper for the CSS, like so:
public static class Helpers
{
public static string OrganizationStyleTemplate(this HtmlHelper html)
{
TagBuilder tagBuilder = new TagBuilder("style");
var templateIDSession = HttpContext.Current.Session["TemplateID"];
if (TemplateIDSession != null)
{
// retrieve your css from the database and insert it into the tag
tagBuilder.InnerHtml = dbObject.CSSYouveStored;
}
return tagBuilder.ToString(TagRenderMode.Normal);
}
}
Then usage would be like so:
#Html.OrganizationStyleTemplate()
P.S. If you need to analyze if the user is authenticated within that method, use:
HttpContext.Current.Request.IsAuthenticated
I'd like to generate a new URL based on the existing route, but will add a new parameter 'page'
Here are a few examples:
old: ~/localhost/something?what=2
new: ~/localhost/something?what=2&page=5
old: ~/localhost/Shoes
new: ~/localhost/Shoes/5
I can not just append &page=5 to existing url because routes may be different.
Some use the query string and some do not.
I had a similar issue, and took the approach of extending the UrlHelper. The code in the View looks like:
Page 2
The UrlHelper extension looks like:
using System.Web.Mvc;
using System.Web.Routing;
using System.Collections.Specialized;
public static class UrlHelperExtension
{
public static string AddPage(this UrlHelper helper, int page)
{
var routeValueDict = new RouteValueDictionary
{
{ "controller", helper.RequestContext.RouteData.Values["controller"] },
{ "action" , helper.RequestContext.RouteData.Values["action"]}
};
if (helper.RequestContext.RouteData.Values["id"] != null)
{
routeValueDict.Add("id", helper.RequestContext.RouteData.Values["id"]);
}
foreach (string name in helper.RequestContext.HttpContext.Request.QueryString)
{
routeValueDict.Add(name, helper.RequestContext.HttpContext.Request.QueryString[name]);
}
routeValueDict.Add("page", page);
return helper.RouteUrl(routeValueDict);
}
}
A couple of notes: I check for the ID, since I don't use it in all my routes. I add the Page route value at the end, so it is the last url parameter (otherwise you could add it in the initial constructor).
This seems like a good approach:
// Clone Current RouteData
var rdata = new RouteValueDictionary(Url.RequestContext.RouteData.Values);
// Get QueryString NameValueCollection
var qstring = Url.RequestContext.HttpContext.Request.QueryString;
// Pull in QueryString Values
foreach (var key in qstring.AllKeys) {
if (rdata.ContainsKey(key)) { continue; }
rdata[key] = qstring[key];
}
// Update RouteData
rdata["pageNo"] = "10";
// Build Url
var url = Url.RouteUrl(rdata);
and it avoids collisions such as ?controller=example&action=problem etc.
You could reconstruct a url by pulling out the parts of the existing route by way of the RouteData object. For instance, the following would render a url with the controller and action of the current route:
<%=Url.RouteUrl(new { controller = ViewContext.RouteData.Values["controller"],
action = ViewContext.RouteData.Values["action"] }) %>
To get you started, you could go with something like a custom extension method that generates the url with an additional "page" parameter. Adjust as necessary:
public static string UrlWithPage(this UrlHelper urlHelper, string name, int page)
{
string url = urlHelper.RouteUrl(
new {
controller = urlHelper.RequestContext.RouteData.Values["controller"],
action = urlHelper.RequestContext.RouteData.Values["action"],
id = urlHelper.RequestContext.RouteData.Values["id"],
page = page
}
);
return "" + name + "";
}
This will construct a properly formatted link based on the routing configuration, whether page is real segment in the url or just appended as a querystring.
i have a dropdown list which select a value
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Screenname(FormCollection collection)
{
Viewdata["screenname"] = collection[0];
return RedirectToAction("Index", new { ScreenName = ViewData["screenname"] });
}
then i want to access this ViewData in other actions like this
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Create(FormCollection collection, string screenname)
{
try
{
/// thats my dataobject which creates
DataObj.SaveData(Guid.Empty, collection, screenname);
return RedirectToAction("Index", new { ScreenName = ViewData["screenname"] });
}
catch
{
return View("Error");
}
}
where index looks like this ...
public ActionResult Index(string ScreenName)
{
///thats my list
GetTable = new GetDataTable(ScreenName);
return View(GetTable);
}
First when i select the value and index gets executed properly.... but when i try to access the viewdata again it doesn't contain the value so anybody if please can help ...
or alternate method to save and retrieve data .
The ViewData object is specific for the particular action that is executing. To pass data between actions, use TempData. more on the difference between the two on MSDN.
You can also directly write to the session state through the Controller.Session property.
This has actually been covered quite often here. The solution for now is to use TempData to save the data you need before you use RedirectToAction().
If you do a search for "RedirectToAction" you'll find a number of posts covering this topic, such as this one.
The next official release of the framework will fix this.
I used a view to take the data from the user and then saved it to a static variable and then used this variable to pass the data to all the other views .
Thanks anyways
Consider an extension method whose purpose is to either:
render an <a> tag
on some condition, just return a string without a link
Question: in an extension method, how can you leverage the proper routing logic with Route Values, etc. rather than hardcoding the string. I suspect HtmlHelper.GenerateRouteLink is part of the solution, but please suggest the best way to achieve this.
public static string CreateUserLink(this HtmlHelper html, string userAcctName)
{
if (string.IsNullOrEmpty(userAcctName))
return "--Blank--";
//some lookup to A.D.
DomainUser user = ADLookup.GetUserByAcctName(userAcctName);
if (user == null)
return userAcctName;
//would like to do this correctly!
return string.Format("<a href='/MyAppName/User/View/{0}' title='{2}'>{1}</a>"
, user.Mnemonic, user.DisplayName, user.Location);
//normally returns http://mysite.net/MyAppName/User/View/FOO
}
More info:
using ASP.NET MVC 1.0
I just had to do something similar to this yesterday. There may be a slicker way to do it, but it helps me to see exactly what is going on, so I don't assume anything.
public static string CreateUserLink(this HtmlHelper html, string userAcctName)
{
if (string.IsNullOrEmpty(userAcctName))
return "--Blank--";
//some lookup to A.D.
DomainUser user = ADLookup.GetUserByAcctName(userAcctName);
if (user == null)
return userAcctName;
RouteValueDictionary routeValues = new RouteValueDictionary();
routeValues.Add("controller", "User");
routeValues.Add("action", "View");
routeValues.Add("id", user.Mnemonic);
UrlHelper urlHelper = new UrlHelper(html.ViewContext.RequestContext);
TagBuilder linkTag = new TagBuilder("a");
linkTag.MergeAttribute("href", urlHelper.RouteUrl(routeValues));
linkTag.MergeAttribute("title", user.Location);
linkTag.InnerHtml = user.DisplayName;
return linkTag.ToString(TagRenderMode.Normal);
}
would this work?
public static string CreateUserLink(this HtmlHelper html, string userAcctName)
{
if (string.IsNullOrEmpty(userAcctName))
return "--Blank--";
//some lookup to A.D.
DomainUser user = ADLookup.GetUserByAcctName(userAcctName);
if (user == null)
return userAcctName;
return html.ActionLink(user.DisplayName, "user", "View", new {title=user.Location});
//normally returns http://mysite.net/MyAppName/User/View/FOO
}
My experience with GenerateRouteLink has been an uphill battle. It's been a while since I messed with it but if it's the Method I'm thinking of Microsoft has made it "internal" so you can't access and use it outside the MVC assembly. There are a number of workarounds that I played with and didn't really like.
What I ended up doing to avoid hard coding the url in my helper methods is have it accept a 'string url' parameter and use Url.Action in my view when I call the helper method. It's not the cleanest but it's a workaround that worked well for me.
<%= Html.CreateUserLink("userAcctName", Url.Action("Home", "Controller") %>