How To Retrieve Form Values From HTTPPOST, Dictionary
Feb 23, 2011
Simple question. I have an mvc controller that has method:
[code]....
The form is a non-trivial form with a simple textbox.
Question - how on earth do I access the parameter values? I am not posting from a View, the post is coming externally. I'm assuming there is a collection of key/value pairs I have access to. I tried Request.Params.Get("simpleTextBox"); but it returns error "Sorry, an error occurred while processing your request.".
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Similar Messages:
Mar 17, 2011
Here is my Controller:
public ActionResult Deposit()
{
return View();
}
[HttpPost]
public ActionResult Deposit(DepositTicket dt)
{
using (var db = new MatchGamingEntities())
{
MembershipUser currentUser = Membership.GetUser();
Guid UserId = (Guid)currentUser.ProviderUserKey;
var AccountId = from a in db.Accounts
where a.UserId == UserId
select a.AccountId;
BankTransaction transaction = new BankTransaction();
transaction.Amount = dt.Amount;
transaction.AccountId = AccountId.SingleOrDefault();
transaction.Created = DateTime.Today;
transaction.TransactionType = "Credit";
Debug.Write("Amount: " + transaction.Amount + " AccountId " + transaction.AccountId);
db.BankTransactions.AddObject(transaction);
db.SaveChanges();
return View();
}
}
Here is my View:
[Code]....
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Sep 3, 2010
I am just getting started with MVC after many years of WebForms development.
I have a very simple page with two textbox fields, one called Input where a user will enter something, and one called Output where I want to return some string after they post the form, much like a postback scenario in WebForms. I have the View connected to a ViewModel for strong typing.
The ViewModel:
[Code]....
The View:
[Code]....
The Controller:
[Code]....
The problem I have is that the output text "Here is some response" never gets displayed, even though I modify the value in the HttpPost method and return the viewmodel to the view. Unless (just tried it) I set the textarea to disabled with:
[Code]....
Can someone explain this behavior? It seems as some "magic" assumes that whatever was in the input fields before the HttpPost should also be there after the post, similar to what ViewState does in WebForms.
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May 13, 2010
I know this has got to be the simplest-sounding question ever asked about ASP.Net but I'm baffled. I have a form wherein my visitor will enter name, address, etc. Then I am POSTing that form via the PostBackUrl property of my Submit button to another page, where the fields are supposed to be all re-formed into new hidden fields, then POSTed again to Paypal.
My problem is I cannot get at the values entered by the visitor in the original page. Any time I put in "runat='server'", ASP.Net completely changes the ID of the control, making it impossible to figure out how to access. In the POSTed form I tried Request.Form["_txtFirstName"] and that turned up null. Then I tried ((TextBox)PreviousPage.FindControl("_txtFirstName")).Text and that was null, too. I've tried variations on those. I cannot figure out how I'm supposed to get at these controls. Why does this stuff need to be so difficult?
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Jul 30, 2010
I'm trying to pass the Question parameter from SubmitAnswer to Index.. But it's not working that well...
Code:
[Code]....
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Dec 5, 2010
i crate 5 textbox dinamically in the form with this code :
[Code]....
but when i try to find textbox values it dosent work where is my problem?
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Feb 19, 2010
Is there a way to retrieve values from the form object using the id element instead of the name element?
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Jan 7, 2011
i need to pass my Request.Form as a parameter, but first i have to add some key/value pairs to it. I get the exception that the Collection is readonly.
I've tried:
System.Collections.Specialized.NameValueCollection myform = Request.Form;
and i get the same error.
and i've tried:
foreach(KeyValuePair<string, string> pair in Request.Form)
{
Response.Write(Convert.ToString(pair.Key) + " - " + Convert.ToString(pair.Value) + "<br />");
}
to test if i can pass it one by one to another dictionary, but i get:
System.InvalidCastException: Specified cast is not valid.
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Dec 29, 2010
If my model has a property of type Dictionary<int, int>, and I populate the dictionary in my GET controller action, how do I maintain the values so they are still there when I am doing a post to another action like this:
[Code]....
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Apr 10, 2010
I have a Dictionary<int, string> cached (for 20 minutes) that has ~120 ID/Name pairs for a reference table. I iterate over this collection when populating dropdown lists and I'm pretty sure this is faster than querying the DB for the full list each time.
My question is more about if it makes sense to use this cached dictionary when displaying records that have a foreign key into this reference table.
Say this cached reference table is a EmployeeType table. If I were to query and display a list of employee names and types should I query for EmployeeName and EmployeeTypeID and use my cached dictionary to grab the EmployeeTypeIDs name as each record is displayed or is it faster to just have the DB grab the EmployeeName and JOIN to get the EmployeeType string bypassing the cached Dictionary all together.
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Jan 19, 2011
I am using C#. I have got below format values in my SESSION variable ["FROMDATA"], I am using DICTIONARY to store the FORM Posted Data. see the related question.
Below are the some values in my SESSION Variable.
1) key - "skywardsNumber" value-"99999039t"
2) key - "password" value-"a2222222"
3) key - "ctl00$MainContent$ctl22$FlightSchedules1$ddlDepartureAirport-suggest" value-"London"
4) key - "ctl00$MainContent$ctl22$ctl07$txtPromoCode" value-"AEEGIT9"
.
.
....so on
Now I want to create a CLASS with METHOD in it, in which I will just pass the "KEY" and it will first check it for NULL OR EMPTY and then it will return its value from the SESSION Variable ["FROMDATA"].
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Dec 23, 2010
I have a class that maintains a static dictionary of cached lookup results from my domain controller - users' given names and e-mails.My code looks something like:
private static Dictionary<string, string> emailCache = new Dictionary<string, string>();
protected string GetUserEmail(string accountName)
{
if (emailCache.ContainsKey(accountName))
{
return(emailCache[accountName]);
}
lock(/* something */)
{
if (emailCache.ContainsKey(accountName))
[code]...
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Nov 22, 2010
I was told to use a Repeater control in what I am doing which is a "Data Entry" screen with ASP.NET controls -a standard "address" like form. In cases, the fields on the form will repeated twice, once for the original values, one for the changed values. I have not used this control before but it seems like I have to bind to a database. Instead, I have an Entity object that has been obtained via a Repository. Can I bind to an object like this?
[DataContract()]
public class RON
{
[code]...
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Mar 5, 2010
I want to create a Dictionary... where i can get Dictionary database or World lists (english to english , english to hindi)
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Sep 4, 2010
I want to use a grid in asp.net MVC application. I did an evaluation and found JQgrid to be optimum from performance point of view(minimum posback). What is your views about this and suggest if you have any other grid in mind which performs better and which is free of cost for commercial usage. Also now a want to post data from edited grid back to server from Jquery base JQgrid .Should i do it using httpget or httppost. If i use HTTPPOST, what should i calculate in controller and what in model As per examples available on net, people are putting calculation logic in controller(See article [URL] I need to know whether it is good practice to put business logic in controller rather than restricting it for routing to view and model.
Controller code as given in mentioned website is having following code
public ActionResult DynamicGridData
(string sidx, string sord, int page, int rows) {
var context = new HaackOverflowDataContext();
int pageIndex = Convert.ToInt32(page) - 1;
int pageSize = rows;
int totalRecords = context.Questions.Count();
int totalPages = (int)Math.Ceiling((float)totalRecords / (float)pageSize);
var questions = context.Questions
.OrderBy(sidx + " " + sord)
.Skip(pageIndex * pageSize)
.Take(pageSize);
var jsonData = new {
total = totalPages,
page = page,
records = totalRecords,
rows = (
from question in questions
select new {
i = question.Id,
cell = new string[] {
question.Id.ToString(), question.Votes.ToString(), question.Title
}
}).ToArray()
};
return Json(jsonData);
}
design practice and sample to implement grid with HTTPpost feature
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Jan 3, 2011
How to carry values from "Form to Form" in ASP.net using vb.net?
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Feb 28, 2011
I have two asp.net applications webapp1 and webapp2, in each application i have a asp.net form Deafult.aspx
I want to do a form submit from Default.aspx in webapp1 and recieve the value in webapp2.
I tried to do it with simply setting action ="webapp2 location" but it is throwing the bellow error
Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.
I even added the machinekey element to web.config
but it is still showing the same error.
This is the code for webapp1 form which sends data to webapp2
[Code]....
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Feb 16, 2010
Is it possible to capture form data, convert it to a .pdf and send it to someone as an email?
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Jul 18, 2010
I don't know how to retrieve a DropDownListFor value on form post and how to validate it.
This is my scenario:
HTML markup:
[Code]....
Model:
[Code]....
I'm not able to validate this dorpdown and when I test if the Model is valid I have to re-fill the Location property
[Code]....
otherwise I get an "object reference not set" error on post-back.
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Nov 22, 2010
I am using a view to create some new categories in the DB but the object the [httpost] create method receives is empty, now this does not always happens. I did double check with other catalogscontrollers and so far the implementation is the same... It only happensds when i try to create a new category the CategoryController
[Code]....
the ViewModel
[Code]....
my create view is strongly typed to ViewModel and has this relevant code create.aspx
[Code]....
and my ascx file is strongly typed to the entity model directly. when the "create" button is pressed and Exception is catched and returns the same view... I have implemented this for other catalogs and works fine except for this one...any clues... by the way im using entity model ...
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Jul 20, 2010
I need to put together an aspx page on which the user specifies a word document. These docs are all in the same format. I need to retrieve text from form fields in the documents and then insert these into a SQL server. I'm completely new to this kind of thing. Can anyone outline the principles behind what I need to do, or point me to a site which will explain it in simple language.
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Mar 5, 2010
I have a simple web app built in asp.net webforms c#where and how would be the best way to save info from the code behind?(and also retrieve that info)eg all i want to save is a dateTime. and a flag set to True or False.and be able to access them in the code behind.Im not using a db for this web app.Edit: and can't really use session variables for this purpose.
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Feb 21, 2011
how to retrieve a value from a typed dataset. I am trying to retrieve a value from a row within a row return from a tabale adapter method. Example:
Dim transAPI As New PN_TransactionBLL()
Dim trans As PN.RetrieveGEmailDataTable = transAPI.getGEmail(itemtId)
The tabeadapter method retrieves 1 row of data and I would like to pull the values retrived such as "trans.rowproperty"(if thats the correct syntax) where "rowproperty" would contain the actual value returned.
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Dec 13, 2010
I am creating an ASP.NET application that allows the user to add form elements to a page within a form. When the page is posted (via the submit button) I need to loop through ALL the posted values in the form and get the values.
I can't check for specific values as I don't know how many there will be or what they will be called.
Could someone point me in the right direction of getting ALL posted values so I can loop through them?
p.s I was looking in Request.Form but couldn't see anything obvious to use.
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Mar 26, 2010
I have a page that displays content retrieved from XML with no problems:
<?xml version="1.0" encoding="UTF-8"?>
<Root>
<Fields>
<NamePrompt>名字</NamePrompt>
</Fields>
</Root>
Page encoding is set to GB18030 and it displays perfectly. However, when I retrieve inputted text from HttpContext.Current.Request.Form that's been entered with double-byte characters, the retrieved string contains unreadable characters. Single-byte characters are fine, obviously.
I've tried the following to no avail:
byte[] valueBytes = Encoding.UTF8.GetBytes(HttpContext.Current.Request.Form["fullName"]);
string value = Encoding.UTF8.GetString(valueBytes);
I don't see this problem with other double-byte languages like Japanese or Korean. How can I successfully retrieve double-byte characters from a page that's GB18030 encoded?
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