Web Forms :: Form Post Encoding?
Dec 27, 2010
Our problem is the following:
We have a website that processing products from various web shops! Users of these web shops can send products for our site what will store these products in our database. Users are sending in products through the post method of the form, and within the form the data is in hidden imput fields! Our site using UTF-8 charset, and this service is working like a charm together with other pages that has utf8 chaset too. The problem comes when someone using our service from a site that has other charset then utf8, for example: iso-8859-2.This case the special hungarian characters, like "íéáűőúöüó" are replaced with a '�' character!We have tried to convert the incoming string on server side but that case the '�' has been replaced by '?'. - still not acceptable :)
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Jan 5, 2010
Im pulling out a text field from the database which has and 's in it for line breaks. Which I have left there for pupose of being able to edit the fields later on.
So when i try to display the text I need to replace them which I have done with:
[Code]....
Simple enough. Only when I run the page the source code I get for it is:
<br />
So it seems its not encoding the < as a encode but into the form <
Does anyone know how to stop this happen. Or a method around it?
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Feb 25, 2010
I have a browser-like software application that logs in to my asp.net site through the login control. Depending on the user info used, the application gets redirected to a text file in the server. The content of the file is then displayed in the application.
The files are created using vb.net streamwriter createtext.
I can get the content of the file correctly the first time the application logs in to the website, but the the 2nd and succeeding attemps results in garbage data (different encoding maybe?). I didn't get this problem when I was hositng the asp.net site locally using (IIS 5.1) - the site is currently hosted using II 6 remotely. what could be wrong? Could it be because I don't log-out of the site?
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Jun 3, 2010
Is there a way to force a non-secure form post to be secure? I understand there are ways to automatically resolve an http URL as an https URL but with form posts, is this type of redirection too late? Will the posted data have already gone through the wire as plain text?
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Jan 14, 2011
I have Master Page and ascx user controls in my application.
how would I use the Cross-Page technique using the @ PreviousPageType directive.
useful links or samples to achieve this.
I am trying to use the Page class that exposes a property named PreviousPage from my User Control.
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Jan 4, 2010
I have written a web mailer that can send and receive emails and display them on a webpage.I have a problem displaying special characters though. Like Russian, and Greek and chinese.I am using openpop.net and I can get the encoding of the incoming email as one of my variables.Thing is, how do I display it? Do I set the content encoding of the whole page to what that specific email encoding is?I've got it UTF-8 at the moment and I get garbage.
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Aug 30, 2010
Why is it not possible to post my form from an iframe? The form in the iframe is the same as the form outside the iframe. I have put in the EnvableEvent Validation="true". It is not working.
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Sep 23, 2010
I want to be able to post my form data to another page based on the result of a validation done on server (and not via javascript). As an example, let's say the user captures a customer number and then captures the phone number of the customer on page A. When the user clicks on the submit button, the page posts back. Then, in the button click event, I need to check in the database if the customer number exists. If it exists, I need to post the data to page B so that user can input the next information. If it does not, I need to stay on the first page and show an error message telling the user that the customer does not exists.
I do not want to use Response.Redirect cause that would mean that page B would lose the form data coming from page A. I know about crosspage postbacks but that just turn the problem the other way around (if I post directly to page B, how do I get back to page A with the form data and show the error message?)...I know about Server.Transfer too but I would like to avoid that method because I know there are down sides to it too...I tried setting the button target URL to page B after validating from the database but it does not automatically redirect to Page B, it still shows up Page A and then if you click again on the button you are taken to page B. I know I could setup a javascript to automatically call the click on the button to post the page the second time automatically to the Page B but I don't like that method (if the user has slow internet, he sees the page twice and once the user is on page B, he can't use the back button cause he would be automatically redirected back to Page B because of the script).So, is there a way to change the request target after the button's click code has been handled???
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Sep 16, 2010
I have done much searching and tried capturing javascript keydown events and such but cannot seem to stop a form from posting upon the user typing the ENTER key. I am using VB with VS 2008 SP1 and .NET 3.5 SP1. However, the ENTER key should function properly within a textarea input. So I have refrained from placing the keydown event in the Body tag.So I have wired up keydown events in 6 <asp:textboxes> that use the AutoComplete Extender. The javascript called is:
function on_keydown(e) {
var keynum;
var keychar;
var numcheck;
[code]...
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Jan 10, 2011
Hope this is the right forum to ask. I am trying to write a simple mobile application with two form fields that POST to a webservice that queries an SQL database and comes back with an XML file that needs to be parsed and displayed
properly in a browser.
So what I have is a webservice .asmx file that is working properly and an HTML form that POST two variables to the webservice file. The result is the generated XML. I simply just need to know the simplest way to display parts of that data as output within the
design of the form page.
Here is the HTML form: http://www.bt4u.org/
And here is the web service: http://www.bt4u.org/BT4U/BT4U_WebService.asmx
If you enter in the following respectively you will see the XML file:
MSS-1607
HWD-2104
there is some sort of class that stores the XML in an array or some such thing that can then be manipulated
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Apr 3, 2010
i m facing this problem for sum time now, and not found a solution yet.here it goes i have a webform on on which i have certain input fields,and a button trick here is i also want this form to connect to a payment gateway so i want this form to post some values to payment gateway, so on button click first it shouldsave the date and then post values and redirect user to payment gateway, during my tries i found out, it will only do one of the two if i specify form actiona and form method it will not save the data but directly redirect,which is not correct,i want both things to happen saving as well as post to payment gateway
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May 7, 2010
I work on a HR application for Internal people.One of my staff member is caliming that he applied for a job, but we do not have any entry in the database for applicants and no error in Log4net.
The staff member calims that he clicked on the Apply Button. And when we checked the IIS log we found one entry by that user in the IIS event viewer. Now how to determine if the person actaully clicked the apply now button or not.This is a serous issue for us as he is very upset as the Advertising for that position is taken off and he cannot apply now.
How to investigate? Also does IIS logs all POSTS and GET Requests?ur system Admin passed me an error log from the event viewer.Which is something like this:
2010-05-05 00:28:57 172.10.12.30 POST /HROnline/Recruitment/Apply.aspx rk=579&pid=0 8600 INTERNALMIISNY 172.20.102.50 Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+5.1;+Trident/4.0;+.NET+CLR+2.0.50727;+.NET+CLR+3.0.4506.2152;+.NET+CLR+3.5.30729
[code]...
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Sep 24, 2010
I'm migrating an old ColdFusion site to ASP.NET. One of the pages has a form that posts to an external URL.
[Code]....
I just discovered that you can't do this in an .aspx page. Seems the page will just post to itself if you hit the submit button.What's the proper technique for achieving this in ASP.NET? There are a couple of hidden fields that pass parameters to the external URL.
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Jul 3, 2010
I have a web form on a web page like this:
<form method="post" action="http://poston.domain.com/" enctype="multipart/form-data"> <input type="hidden" name="function" value="somevalue"> <input type="text" name="username" value="somevalue2"> <input type="text" name="password" value="somevalue3"> <input type="file" name="picture"> <input type="text" name="pictto" value="0"> <input type="submit" value="Send"></form>
I can post all the required data to that form on that page by calling the following function:
Public function GetResult(ByVal File As Byte)) as stringDim request As HttpWebRequest = CType(WebRequest.Create("http://poston.domain.com), HttpWebRequest)request.Method = "POST"request.KeepAlive = TrueDim boundary As String = "-------------------------" + DateTime.Now.Ticks.ToString("x")Dim header As String = vbCrLf & "--" + boundary + vbCrLfDim footer As String = vbCrLf & "--" + boundary + vbCrLfrequest.ContentType = String.Format("multipart/form-data; boundary={0}", boundary)Dim contents As StringBuilder = New StringBuilder()contents.Append(vbCrLf)contents.Append(header)contents.Append("Content-Disposition: form-data; name=""function""" & vbCrLf)contents.Append(vbCrLf)<br/>contents.Append("functionname1")contents.Append(header)contents.Append("Content-Disposition: form-data; name=""username""" & vbCrLf)contents.Append(vbCrLf)contents.Append(myusername)contents.Append(header)contents.Append("Content-Disposition: form-data; name=""password""" & vbCrLf)contents.Append(vbCrLf)contents.Append(mypassword)contents.Append(header)contents.Append("Content-Disposition: form-data; name=""pictto""" & vbCrLf)contents.Append(vbCrLf)contents.Append("0")contents.Append(header) contents.Append("Content-Disposition: form-data; name=""picture""; filename=""Untitled.jpg""" + vbCrLf)contents.Append("Content-Type: image/jpeg" + vbCrLf)contents.Append(vbCrLf)Dim BodyBytes As Byte() = Encoding.UTF8.GetBytes(contents.ToString())Dim footerBytes As Byte() = Encoding.UTF8.GetBytes(footer)request.ContentLength = BodyBytes.Length + File.Length + footerBytes.LengthDim requestStream As Stream = request.GetRequestStream()requestStream.Write(BodyBytes, 0, BodyBytes.Length)requestStream.Write(File, 0, File.Length)requestStream.Write(footerBytes, 0, footerBytes.Length)requestStream.Flush()requestStream.Close()Dim ret As String = NewStreamReader(request.GetResponse.GetResponseStream).ReadToEndreturn retend function
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Nov 23, 2010
To prevent my application from crashing with the error "A potentially dangerous Request.Form value was detected...", I just turned page validation off. I want to revisit this and solve it correctly. Is there a good strategy for this? If people are entering '<' and '>', I think the only way to save their data is to encode it via Javacript. I have tried catching it in the code-behind, but it becomes too late. I am thinking of inheriting the textbox and auto encode/decode the input with client scripts. I also have to think of all the angle brackets that are already saved in my database.
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May 27, 2010
i have a PayPal button, and i've been trying to add it to my site, but since my page is in a masterpage, and ovcourse, the form tag is editable only in masterpage, theres no way i could add the code inside the form tag, as so:
<form action="https://www.paypal.com/cgi-bin/webscr" method="post">
<input type="hidden" name="cmd" value="_s-xclick">
<input type="hidden" name="hosted_button_id" value="K92PCJ9ULE8LC">
<input type="image" src="https://www.paypal.com/en_GB/i/btn/btn_donate_LG.gif" border="0" name="submit" alt="PayPal - The safer, easier way to pay online.">
<img alt="" border="0" src="https://www.paypal.com/en_GB/i/scr/pixel.gif" width="1" height="1">
</form>
But as i tried to create another form tag, it came up saying i could only have 1 server side form tag.So is there any way i could do this?
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Dec 20, 2010
Using .Net framework 4.0I have a .net search application that reads values from regular html webforms submitted via the Post method. So the code to process these forms uses Request.form and looks like
[Code]....
I am writing a new .net application that needs to call this same search application.
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Apr 19, 2010
See what happens when you answer my questions! I come back! No good deed goes unpunished. I've built an Update form where my visitor can update data in dbase. I have a formview with several dropdown lists; none of which will update the table (all the textboxes, checkboxes and even Ajax enabled calendar work just fine). In the form below, visitor selects a CareerCluster from the ddl. Upon postback, the next ddl (pathwayListBox) populates with related data using the CareerCluster.selectedvalue in a query. At the same time, tsaOrgsDropDownList is also populated based upon the first ddl (CareerCluster).
When user selects from the tsaOrgsDropDownList the final ddl (tsaDropDownList) is populated. All this various selecting/populating works just fine on the form. The problem is: Nothing is updated to the table upon clicking the Update button. All other form fields do post as their supposed to except, I have other ddls on the page that are not related to the above series and they won't post either. My thought is that somehow, this is related to the postbacking going on. That posting back is overwriting the selectedValues with null or something.
<asp:FormView ID="courseUpdateFormView" runat="server" BackColor="White" BorderColor="White" BorderStyle="Ridge" BorderWidth="2px" CellPadding="3" CellSpacing="1" DataKeyNames="CTECourseID" DataSourceID="formviewSqlDataSource" Width="715px">
<FooterStyle BackColor="#C6C3C6" ForeColor="Black" />
<RowStyle BackColor="#DEDFDE" ForeColor="Black" />
<EditItemTemplate>
<table align="center" width="700" border="1" cellpadding="10" cellspacing="2" bgcolor="White">
<%--A whole bunch of textboxes goes here--%>
<tr>
<td bgcolor="#dadada">
<strong>Number of HS Credits:</strong> <span>(Standards-based districts use the <em>Other</em> form field.)</span>
</td>
<td bgcolor="#FCCCCC">
<span><font color="red">Note: you must reselect HS Credits from the list or enter Other credits in the form field provided.</font></span><br />
<asp:DropDownList ID="numHSCreditsDropDownList" runat="server" TabIndex="3" ToolTip="Standards Based districts us the Other form field." ValidationGroup="HSCredits" AppendDataBoundItems="True" OnSelectedIndexChanged="numHSCreditsDropDownList_SelectedIndexChanged">
<asp:ListItem Selected="True" Value="0">--Choose One--</asp:ListItem>
<asp:ListItem>0.5</asp:ListItem>
<asp:ListItem>1.0</asp:ListItem>
</asp:DropDownList>
</td>
</tr>
<tr>
<td bgcolor="#dadada">
<strong>Career Cluster:</strong>
</td>
<td bgcolor="#FCCCCC">
<span><font color="red">Note: you must reselect Career Cluster from the list.</font></span><br />
<asp:DropDownList ID="careerCluster" runat="server" AutoPostBack="True" TabIndex="4">
<asp:ListItem Selected="True" Value="0">--Choose One--</asp:ListItem>
<asp:ListItem Value="1">Agriculture, Food & Natural Resources</asp:ListItem>
<asp:ListItem Value="2">Architecture & Construction</asp:ListItem>
</asp:DropDownList>
</td>
</tr>
<tr>
<td bgcolor="#dadada">
<strong>Pathways:</strong> <span>(Pathway as defined in the Cluster/Pathway model.)</span>
</td>
<td bgcolor="#FCCCCC">
<span><font color="red">Note: you must reselect Course Pathway from the list or enter Other Pathway in the form field provided.</font></span><br />
<asp:ListBox ID="pathwayListBox" runat="server" DataSourceID="CTECourses" DataTextField="ClusterPathway" DataValueField="ClusterPathway" SelectionMode="Multiple" Style="margin-left: 0px" TabIndex="5" Rows="3">
<asp:ListItem Selected="True" Value="0">--Choose One--</asp:ListItem>
</asp:ListBox>
<asp:SqlDataSource ID="CTECourses" runat="server" ConnectionString="<%$ ConnectionStrings:CareerTechEducationConnectionString %>" SelectCommand="SELECT [ClusterName], [ClusterPathwayID], [ClusterPathway], [ClusterCode] FROM [lkClustersPathways]
WHERE ([ClusterCode] = @ClusterCode)">
<SelectParameters>
<asp:ControlParameter ControlID="careerCluster" Name="ClusterCode" PropertyName="SelectedValue" Type="Int32" />
</SelectParameters>
</asp:SqlDataSource>
</td>
</tr>
<tr>
<td align="center" bgcolor="#4A3C8C" colspan="2">
<asp:Label ID="occupationalStandardsLabel" runat="server" Font-Bold="True" ForeColor="White" Text="Occupational Standards"></asp:Label>
</td>
</tr>
<tr>
<td bgcolor="#dadada">
<strong>Source of Occupational Standards:</strong>
</td>
<td bgcolor="#FCCCCC">
<span><font color="red">Note: you must reselect Source of Occupational Standards from the list or enter Other Source of Occupational Standards in the form field provided.</font></span><br />
<asp:DropDownList ID="tsaOrgsDropDownList" runat="server" AutoPostBack="True" DataSourceID="SqlDataSource3" DataTextField="TSAOrganization" DataValueField="TSAOrgID">
<asp:ListItem Selected="True">--Choose One--</asp:ListItem>
</asp:DropDownList>
<asp:SqlDataSource ID="SqlDataSource3" runat="server" ConnectionString="<%$ ConnectionStrings:CareerTechEducationConnectionString %>" SelectCommand="SELECT [TSAOrgID], [TSAOrganization] FROM [lkTSAOrgs] WHERE ([TSAClusterID] = @TSAClusterID)">
<SelectParameters>
<asp:ControlParameter ControlID="careerCluster" Name="TSAClusterID" PropertyName="SelectedValue" Type="Int32" />
</SelectParameters>
</asp:SqlDataSource>
</td>
</tr>
<%--A whole bunch of textboxes, checkboxes and other stuff goes here--%>
<tr>
<td bgcolor="#dadada">
<strong>What is the Summative Assessment (Technical Skills Assessment) for this course:?</strong>
</td>
<td bgcolor="#FCCCCC">
<span><font color="red">Note: you must reselect Summative Assessment from the list or enter Other Summative Assessment in the form field provided.</font></span><br />
<asp:DropDownList ID="tsaDropDownList" runat="server" AutoPostBack="false" DataSourceID="TSAs" DataTextField="TSA" DataValueField="TSAID" Width="300">
</asp:DropDownList>
<asp:SqlDataSource ID="TSAs" runat="server" ConnectionString="<%$ ConnectionStrings:CareerTechEducationConnectionString %>" SelectCommand="SELECT [TSAID], [TSA] FROM [lkTSAs] WHERE ([TSAOrgID] = @TSAOrgID)">
<SelectParameters>
<asp:ControlParameter ControlID="tsaOrgsDropDownList" Name="TSAOrgID" PropertyName="SelectedValue" Type="Int32" />
</SelectParameters>
</asp:SqlDataSource>
</td>
</tr>
<%--A whole bunch of textboxes goes here--%>
<tr>
<td align="center" bgcolor="#dadada">
<asp:Button ID="UpdateButton" runat="server" CausesValidation="True" CommandName="Update" Text="Update" />
<br />
<span><font color="maroon">* All fields except the Tech Prep Information are required.</font></span></div>
</td>
<td align="center" bgcolor="#dadada">
<asp:Button ID="UpdateCancelButton" runat="server" CausesValidation="False" CommandName="Cancel" Text="Cancel" />
</td>
</tr>
</tr>
</table>
</EditItemTemplate>
</asp:FormView>
<asp:SqlDataSource ID="formviewSqlDataSource" runat="server" ConnectionString="<%$ ConnectionStrings:CareerTechEducationConnectionString %>" SelectCommand="SELECT * FROM tblCTECourses WHERE (CTECourseID = @CTECourseID)" UpdateCommand="UPDATE tblCTECourses
SET HSCredits = @HSCredits, CareerCluster = @CareerCluster, Pathways = @Pathways, TSAOrgs = @TSAOrgs, TSA = @TSA, LastUpdate = GETDATE() WHERE (CTECourseID = @CTECourseID)">
<SelectParameters>
<asp:SessionParameter Name="CTECourseID" SessionField="CTECourseID" Type="Int32" />
</SelectParameters>
<UpdateParameters>
<asp:FormParameter FormField="numHSCreditsDropDownList" Name="HSCredits" Type="String" />
<asp:FormParameter FormField="HSCreditsOtherTextBox" Name="HSCreditsOther" Type="String" />
<asp:FormParameter FormField="careerCluster" Name="CareerCluster" Type="Int32" />
<asp:FormParameter FormField="pathwayListBox" Name="Pathways" Type="String" />
<asp:FormParameter FormField="tsaOrgsDropDownList" Name="TSAOrgs" Type="Int32" />
<asp:FormParameter FormField="tsaDropDownList" Name="TSA" Type="String" />
<asp:FormParameter FormField="TSAOtherTextBox" Name="TSAOther" Type="String" />
</UpdateParameters>
</asp:SqlDataSource>
In the codebehind I've tried to set selectedvalue to session variable upon selected index changed like this:
Protected Sub numHSCreditsDropDownList_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs)
Session("HSCredit") = DirectCast(courseUpdateFormView.FindControl("numHSCreditsDropDownList"), DropDownList).SelectedValue
End Sub
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Jul 27, 2010
I have an asp.net application in which I have a parent form and in that on load I am adding sub forms dynamically having a submit image button..
When I am clicking the button of one form then I am able to read the hidden variables using request under parent form .But on clicking the second button the hidden variables of parent form are having null value although i have assign the value to them using context variables.
how can i handle mulitple form action for same page
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Mar 6, 2011
asp.net with vb. I thought this would be easy but have been reading for an hour and not found out how to simply repost a page where form data has been entered and return the page with some error messages about what was entered. I want to return the page with all input controls with the data just as the user entered them before submitting. the error messages are labels that were blank when the page is first loaded. preferably the page returns focused to the topmost error error message. if that can't be done I would populate some label at the top of the page with something to the effect that 'errors were found, scroll down to see the errors'
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Jul 19, 2010
I need to delete all the item what I seleted or I Checked.so I collect all the ID I selected .
then what should I do next?I could not find a submit button to send them,they are not in a from.So I try to collect them to a JSON object and then use AJAX to send them to server.
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Oct 5, 2010
Using Facebox with .NET (Web Forms) is painful--this primarily HTML site was designed by someone else. I may have IIS (7.5) issues as well. This Facebox pop-up is in a separate file, login.html, that is called from index.html:
$k('a[rel*=example_2]').facebox_1({
loading_image : '/images/loading.gif',
close_image : '/images/closelabel.gif'
});
and the link to open it
<a href="login.html" title="Log In" rel="example_2" id='login'>Log In </a>
The form to be submitted with username and password (login.html):
<form name="login" method="post" action="#" onsubmit="return false;">
and after it's validated (this is working), it posts to login.aspx (login.html):
[code]....
The form posts. I can debug it in Visual Studio in the Page_Load method of login.aspx. The last line of the Page_Load method is:
Response.Redirect("welcomepage.html");
But, the Facebox pop-up remains. Firebug shows the post, It hits the Page_Load method of login.aspx, and the Facebox pop-up doesn't go anywhere. BUT, Firebug shows welcomepage.html rendered twice in the Response tab of the XHR (huh? why XHR?) request. I thought $.post did a regular postback. And why isn't my browser actually redirecting.
Attempted Fix
If I change the form in login.html to action='login.aspx', I get a 405.0 error method not allowed (but, it's trying to post to index.html, HUH?). And I can't figure out how to fix this in IIS 7.5 on Windows 7. I get this error in Visual Studio and when deploying locally to IIS. I had read it may have to do with script mapping, handlers, or the fact that I'm posting from an but I can't find a sufficient fix.
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Mar 28, 2011
I am trying out ASP.NET MVC2. I have a controller called SearchController and a view folder called Search containing Search.aspx. In my controller I have:
[code]....
In my view I have:
<form action="Search/Post" method="post">
<label><% Response.Write(Model.Title); %></label>
<input type="Submit" Value="First" Name="submitButton"/>
</form>
It works fine the first time I click the button, and the browser shows a url of [URL]. However, when I click the button a second time the browser url changes to [URL] and I get a 404. What am I doing wrong?
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Oct 7, 2010
I don't know it's even possible but I try to achieve to post data from one page to another using the second form.The problem is I need a form tag for the user interface containing callback panels etc. I want to put a second form with some hidden-field:
<form id="postForm" method="post" action="target.aspx">
<input type="hidden" id="id" />
</form>
I submit the form from javascript with jquery:
$("#id").val(id);
$("#postForm").submit();
Is there a way access the value of the hidden field on the target page?
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Mar 1, 2010
I have a single model type to wrap up various models I want to use in my view:
public class QuestionViewData {
public Question Question { get; set; }
public IList<Answer> Answers { get; set; }
}
Now, in my question view I pull the data from the Question object - that's fine. Secondly I iterate through all Answer objects and pass them to a partial view:
<% foreach(Answer item in Model.Answers) { %>
<% Html.RenderPartial("ShowAnswer", item); %>
<% } %>
For each answer (in the partial view) I have some action buttons (like ratings). I'm using separate form POST's with hidden fields for every button. The problem is that I can't post the whole QuestionViewData model to my action method cause I only have the Answer object as model in the partial view. However, I need to return the complete question view from that action that takes QuestionViewData as model.
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