Web Forms :: Javascript - Set Source File And Assigning Value To A Hidden Field Control

Oct 8, 2010

have a tree view control build dynamically. i want to change color of the selected node from client side. write the script given below. and its work fine.

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AJAX :: Assigning AutoCompleteExtender Selected Value To Hidden Field

Jul 15, 2010

I have been trying to figure out how to assign a selected value from an AutoComplete Extender to a hidden field. I have the AutoCompleteExtender, the Key Value Pairs all working. In my javascript if I use the following function:

<script type="text/javascript" language="javascript">

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Web Forms :: Accessing Hidden Field From The User Control On Aspx Using Javascript

May 28, 2010

I have a user control that i have registered to an aspx page. Now from the aspx page, i am trying to access one of the registered usercontrol's hiddenfield value in my aspx page using javacript using the below code:

tst = document.getElementById('control1$hdnField').value;

I looked into the page's trace, and i could see 'control1$hdnField'. Then why i am not getting its value in my aspx page. I have also confirmed that the hidden field by this name exists in the user control and also has a default value set.

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State Management :: Hidden Field Value In User Control / Make The Hidden Field Save Its Value?

Mar 23, 2011

I have a custom user control which contains a asp hiddenfield object. The value of this hidden field is being set using javascript and I have verified that the value is being set properly. When a postback occurs the new value is not being saved and I cannot access it in my code.

I believe the problem is because the user control is not saved in viewstate and therefore the hidden field value is not saved accross postback. How can I make the hidden field save its value? I tried accessing it from the early page cycles and still no luck.

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Gridview Hidden Field - How To Get A Hidden Field Value Using JavaScript

Jan 7, 2010

I have Gridview like this:

<asp:GridView ID="gvPartsSearchResult" runat ="server" CssClass="MRJ_TextGrid">
<Columns>
<asp:TemplateField HeaderText="Select">
<ItemTemplate>
<asp:RadioButton
ID="rdButton"
runat="server"
AutoPostBack ="true"
onclick="javascript:CheckOtherIsCheckedByGVIDMore()"/>
<asp:HiddenField
ID="hdnFileExtension"
runat="server"
Value ='<%#Bind("FILE_EXTENSION")%>'/>
</ItemTemplate>
</asp:TemplateField>
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I want to read the hidden field value when the user clicks on the radio button.

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Updating A Hidden Field Via JavaScript?

Feb 3, 2011

I inherited some JavaScript that I was told to integrate into our ASP.NET site. I thought this would be straightforward but it's turning out to be a bit of a challenge.

The code looks something like this:

<SELECT id="Question1" name="Question" onchange="updateQuestion();">
<OPTION value="notChosen">--Please Select One--</OPTION>
<OPTION value="in">India</OPTION>
<OPTION value="de">Germany</OPTION>
<OPTION value="fr">France</OPTION>
<OPTION value="us">United States</OPTION>
<OPTION value="ch">Switzerland</OPTION>
</SELECT>

The goal is to get the value from this HTML control into ASP.NET, however this control itself is being dynamically generated by another chunk of javascript, so I can't just change this to an asp.net control. My solution was to add the onchange="updateQuestion();" method, this JS will take these SELECT tags and place the values into an ASP.NET control:

function updateSecQ() {
var sQuestion = document.getElementById('<%=sQuestion.ClientID%>');
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for (question in questions) {
if (questions[question].value != null)
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alert(sQuestion.Value);
}

As you can see, that's looking to update an ASP.NET control:

<asp:HiddenField ID="sQuestion" runat="server" value="" />

This appears to all work, however when I goto the server side on the form submit I see that sQuestion.Value is still = "".

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Javascript - Set Hidden Field Value After Postback.

Jul 29, 2010

I have a component that determines a value on a postback event.

protected void Button_Click(object s, EventArgs e)
{
HiddenField.Value = 5;
}

There's more involved in the value of course, but HiddenField is an asp:HiddenField control with runat=server set. I have in my javascript:

var id = $("#<%= HiddenField.ClientID %>").val();

The code in the javascript is set to be run only after the postback has occured (a different client click event) for the purpose of passing the hidden field value via QueryString to another URL (since i can't do a response redirect on postbacks and the client wants it in a different page anyway).

I tried adding:

ScriptManager.RegisterHiddenField(HiddenField, "Value", string.Empty);

To a !Page.IsPostback section of code, but the ID is still not set when the javascript is run.

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Security :: Assigning Value To Password Field In CreateUserWizard Control

Nov 18, 2010

Is there a way to assign a value to the password field in the CreateUserWizard Control programmatically when the page loads. I would like to assign this value using a random password function that returns the password string without converting it an editable template.

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Javascript - Hidden Field Data Lost On Postback

Nov 18, 2010

I am working on an ASP.NET application (well supposed to be deploying it about 3 days ago) and my hidden fields are loosing value when the form gets posted back..

I am using them to store information i write using javascript and on my own machine this works fine but as soon as i deploy it on our server everything else works except these values are lost..

I am using the .NET AJAX control toolkit on the same page and have noticed my calander datepicker also looses the data..

I have checked using firebug and the data is definitely getting post to the server but is getting lost somewhere!

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Javascript - Getting Null Value Of The Hidden Field At Server Side

Feb 18, 2011

I am calling a Java-script function, in that i am passing the value of hidden field, that hidden field i want to use at server-side, but the value of hidden field is null.

Client Side function

function getDetails()
{
document.forms[0].HdnNode.value=tree_selected_id; //HTML Hidden Field.
str="Cmp_12";
str_array=str.split("_");
var str_array1=str_array[0];
var str_array2=str_array[1];
document.getElementById("<%=HiddenNodeId.ClientId %>").value=str_array1;
document.getElementById("<%=HiddenTreeId.ClientId %>").value=str_array2;
}

Server Side Function

Public Sub InsertNodes(ByVal NodeId As String)
Dim objErrorObj As New ErrorObj
Dim ParentID As String
ParentID = HiddenNodeParent.Value
NodeId = HiddenNodeId.Value
Dim NodeIDTree As String
NodeIDTree = HiddenTreeId.Value
End Sub

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How To Able To Assign A Value To My Hidden Field Control

Mar 4, 2010

how am I be able to assign a value to my hidden field control? I have this web service that returns member's ID and name (e.g. 0001-John dela Vega). In order for me to search for a member, I'm using an autocomplete extender, now, if in case that I found the member I'd like to assign its member id to a hidden field. I ask this because I'd like to change the way my web service return data so instead of displaying the member's id and name at the same, I'll just show its member name.

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C# - Hidden Field - Value Is An Empty String Upon Postback Inside Custom Control

Jan 17, 2011

I have a custom control that has a hidden field. Upon postback I want to obtain the value stored in it, but it's always an empty string.I am performing client-side manipulation of the hidden field values and have verified in firebug that the fields are correct before issue a post back,Here is the setup:

public class DualListPanel : SWebControl, INamingContainer

{
protected IList<DlpItem> UnassignedList { get; set; }
protected IList<DlpItem> AssignedList { get; set; } [code].....

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C# - Hidden Field Not Loading From View State On Post Back Within Parent Custom Control?

Jan 10, 2011

I have a parent control that has an instance of a HiddenField child control. I am using CreateChildControls() to add it. Everything works client side including the values being added to the field. However, on postback, the reference to the field is null

here is the code

[code]....

I have tried simply relying on the ViewState ... then also attempted using FindControl(). Neither works, it comes up as a null reference ... any input on what is going here?

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Forms Data Controls :: Assigning A Value To A Formview Field?

Jun 18, 2010

I now can reference a field in the formview, but, assigning it a value is fighting me.

I want to assign the UserName field in the formview with the login name from the Master (HttpContext.Current.User.Identity.Name).

(A) I tried the likes of: FormView1.FindControl("UserName").DefaultValue = username but of course that doesn't work.

(B) Alternatively, I tried to edit the SQL so that I passed it the HttpContext.Current.User.Identity.Name but didn't have any luck.

InsertCommand="INSERT INTO [TechUserName] ([CertName], [CertLevel], [CertLast], [CertFreq], [CertDue]) VALUES (@temp1, @CertLevel, @CertLast, @CertFreq, @CertDue)"
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JavaScript - Input Hidden Control Does Not Keep Value Between Postbacks?

Nov 25, 2010

I'm making an webpage using ASP.NET MVC.

I have the following input hidden definied:

<%=Html.Hidden("inputHiddenSelectedMenuId") %>

And i set its value in this js function:

function SetSelectedMenu(id) {
$('#inputHiddenSelectedMenuId').val(id);
}

After a make a postback in the js init function i want to use the value set in the input hidden but the value is string empty.

[code]....

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Forms Data Controls :: Getting 'System.InvalidCastException' When Assigning A Label Color Via Field Value?

Jan 25, 2010

I have a very simple FormView that has several fields on it. There is a field that either returns a "1" or "0" based on conditions in the database. If the value is "1", I want to leave the label control as is (normal font, in black). However, if the value is "0" I want to change the font to bold and change the forecolor to red. Simple, right?

I am able to change the font-bold property using the code below, but if I use the code to attempt to change the font color, I get the following error message for this line:

An exception of type 'System.InvalidCastException' occurred in App_Web_hoge3m1x.dll but was not handled in user code

Additional information: Specified cast is not valid.

[Code]....

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What Is The 'hidden' Limit On File Name Length When Using A FileUpload Control

Nov 16, 2010

I have a FileUpload control, and when I select the file

[code]...

(which I can create in Windows with no problem), it is saying that it does not have a file when I postback.

It works fine for smaller file names. What's going on?

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Web Forms :: Value Of A Hidden Field Onblur?

Dec 23, 2010

I am trying to set the value of a hidden field onblur. I add the blur attribute programatically on page load. When the user moves off the control the blur event fires the following javascript.

function getFocus()
{
var obj=document.activeElement;
alert(obj.id);
[code]...

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Web Forms :: Converting Hidden Field Value To Integer?

Jan 7, 2010

int no = int.Parse(hidden_field.Value.TrimStart()); it cause the error: input format was not in correct format. how to fix it?

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Web Forms :: Eval Not Working With Hidden Field?

Mar 25, 2010

I have some hidden fields to which i want to assign values through properties in .aspx.cs file.How can i do so?

The following gives the error: Compiler Error Message: CS0103: The name 'Business' does not exist in the current context

[Code]....

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Web Forms :: Getting Value From Hidden Field In Update Panel

Feb 29, 2012

I have 2 text controls one visible & other hidden & a button1 wuth client click   in update panel

when the user enters the value in visible text control & clicks button1 the value is passed to the hidden field & i get value in the hidden field

outside the update panel there is one more command button with server side click event

on command button click i need to get values of the hidden field in server side which currently i am getting blank

I even tried by putting the command button in another update panel

but still i get blank

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Web Forms :: Difference Between ViewState And Hidden Field

May 7, 2015

What is difference between ViewState and Hidden Field in ASP.Net. If possible with an example.

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Web Forms :: Setting A Hidden Field From The Master Page?

Jul 13, 2010

From the master page of my ASP.NET site I need to set the value of a hidden field in every get and post request and then subsequently read it in the next request.The problem is that in the post request the code works fine but when the client sends a get request I am unable to read the value of the hidden field from teh Master Page. Is the hidden field the proper approach to this and if so how do I read the value set in the hidden field in the subsequent get request. If the hidden field is not the proper approach for this then what else should I use?

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Web Forms :: Hidden Field Value Not Persists On Page Refresh?

Jun 2, 2010

hidden field value not persists on page refresh

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Web Forms :: Onclientclick Pass Hidden Field Value Aspx?

Mar 26, 2010

i would like to call the external js file's function onclientclick event, but how can i pass the parameter, which i get from the hidden field value from the same aspx file.

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