Javascript Checkbox Allways Returning False

Apr 4, 2012

I've read a few articles talking about checkboxes always returning a false state,[code]I though it was due to the second input that it was always returning a false state.

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Checkboxes Doesn't Post Back - Checkbox On GridView Always Returning False

Jan 22, 2012

I have a GridView with a Checkbox on the first column: Code: The thing is that the Checkbox.Checked always returns False. How can I get the checked state of the Checkboxes in this scenario? Or what would be the best approach into updating the aforementioned column? P.S. Note that click on the checkboxes doesn't post back. Nothing happens on the page until the user clicks Save (and that is the intended behavior).

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Method Returning True Or False

Oct 15, 2011

I am new to programming.I am making a coin tossing program for class.It is telling me I need to create a separate method that doesn't take any arguments and only returns false for tails and true heads.Not sure if a function or a sub returns only that type of data. Also once the code is returned I can then add that to a CONST to keep a running total.If the method only returns true or false do I need to put the code in buttonclick sub to post the image of the coin in the picturebox using a if then statement? Would I also need to add the code for the print out of the statistics after the if then statement? Not asking for code just a step in the right direction.

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.net - Boolean VB Expression Returning False For Integer 1?

Jan 17, 2011

This is probably a really basic (no pun intended) question, but I can't seem to find an answer anywhere.Why does the result of func1 return False and func2 returns True? On every other test I have done, integer 1 is converted to boolean true and 0 to false. Works ok if I just set rtnValue to 1 or 0.

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IF Statement Always Returning False EVEN IF Condition Is TRUE

Mar 26, 2009

I'm not reciving any errors at all this is Still my homework on the Compound Intrest and it's due tommarow and well an if statement isn't working

Private Sub btnCalc_Click(ByVal sender As Object, _
ByVal e As EventArgs) Handles btnCalc.Click
Dim decAmount As Decimal = 0D

[Code].....

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InvokeRequired Keeps Returning False When True Is Expected?

May 24, 2012

I have the following test code. It does nothing useful, but it's there for me to understand VB:

Imports System
Imports System.IO
Imports System.Diagnostics

[code].....

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ASP Checkbox Value Incorrect When AutoPostBack Is Set To False

Sep 1, 2010

I have an asp:checkbox control on an aspx page I am working on. This checkbox is within a custom control and previously was posting back every time it was clicked. I am in the process of ajaxifying the page and have come across a problem. When I remove the attribute AutoPostBack="True" from the asp:checkbox, the vb code returns False when I check myCheckbox.checked (this is on a postback else where on the page what has not be ajaxified), even though I can see the box is indeed checked.

I am assuming that because the checkbox no longer posts back, for some reason the VB code (or the view state maybe) doesn't see it as having been checked. Is this correct, and if so, how to I correct it?

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Javascript - Returning XML From Webmethod?

Jul 30, 2011

I am using an ajax PageMethod to call an asp.net webmethod. From there I'm trying to pass a lot of XML back to a callback javascript function.

Currently I just convert the XML into a string and pass it in that format. But it seems that if the string is too long it causes an error.

[Code]...

So my question is: Is there a better way to pass the XML from VB to javascript, or a way to allow large strings to be passed without error?

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CheckBox In DataGridViewCheckBoxColumn Won't Change To False When Clicked

Jan 9, 2012

For some reason, I can't change the checkbox from True to False when I click the checkbox in my DataGridViewCheckBoxColumn called "Select". I setup my DataGridView (dgvWBFOrphans) with 5 TextBox columns that are Read-Only and 1 CheckBox column that is not Read-Only. I use a stored procedure and data reader to load the DataTable which is used as the DataSource for dgvWBFOrphans. I want all the checkboxes to default to True and allow the users to uncheck certain rows in the "Select" column.

Dim dtOrphans As New DataTable
Using cnn As New SqlClient.SqlConnection(clsDBConn.clsDBConnections.prpConnString)
cnn.Open()

[code]....

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Datagridviewcheckbox Set False - Checkbox In Datagridview Does Not Change

Aug 13, 2009

I would like to make a applcation that after checkbox inside datagridview is checked. After calcuation stuff, if result less than standard, then it set the checkbox to not checked state. But I find that checkbox in datagridview does not change. It changed after I click other checkbox. What I want is lagging one cycle. I tried dgv.refresh() or update event , no effect.

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VS 2005 Checkbox Custom True And False Value

Mar 18, 2009

i have a checkbox bound to a column with datatype character to my database... the column uses values Y and N.also, just like to add that i have tried changing the column into character of 5 byte so that it can hold the values "True" and "False" when the property bound is the property Checked. this works okay but there are some columns that doesn't use True and False like in my statement above.is there a way that i can set my checkbox to checked when the column value it is bound to is Y and vice versa.. i noticed that in the checkbox inside a datagridview has the properties TrueValue and FalseValue but i dont see this anywhere in the checkbox not in the datagridview.

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Javascript And .net Returning Incorrect Results?

Nov 17, 2010

We are noticing this occurs BOTH in javascript and in VB.net 2.0. So basically both in server side and client side code. Basically if you run this equation 975328 - 153279.43 you get the following answer 822048.57000000007. However, if you run 975328 - 153279.4, 975328 - 153279.433, or 975328 - 153279.5 everything is returned correctly. WHY the system calcuates the 975328 - 153279.43 with an answer with 11 decimal places? Not to mention adding the 7 in the 11th decimal place, thus making the equation answer incorrect.Of course I know I can trim, set the answer to appropiate decimal places, etc., etc.the above is proven by just entering the equation into the immidiate window, thus ellimnating varibables such as object types, etc., etc.

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C# - JavaScript : Returning NULL In IE But Working In FireFox?

Jun 9, 2009

I have this function correctly linked in an external .js file...

function SubmitAge(age, UpdatePanelID, HiddenAgeID) {
$get(HiddenAgeID).value = age;
__doPostBack(UpdatePanelID);
}

and am calling it like this from an onClick of an a href="#" ... html tag (tags removed, please scroll right as stackoverflow has the greatest difficulty in displaying simple content, 7th display related edit, thanks stackoverflow)

a href="#" onclick="SubmitAge(24, 'ctl00_MainContent_arFrom_upAgeRange', 'MainContent_arFrom_HiddenAge')" runat="server" 24 /a

yet, i am getting this error, and its being called on the first line of the SubmitAge function (line with $get(HiddenAgeID)... etc...)

Error:Microsoft JScript runtime error: 'null' is null or not an object

i've copied and pasted my WATCH windows in visual studio .net (vs2010 beta 2 using vb.net & c#) while the execution breaks inside teh SubmitAge .js function...

age 53 Number
UpdatePanelID "ctl00_MainContent_arTo_upAgeRange" String
HiddenAgeID Undefined identifier Error

Why on earth is HiddenAgeId, clearly passed just like UpdatePanelID, is returning an "Undefined identifier Error"???

edit: Update: turns out it works perfectly (as it should) when i load it up in FireFox, but has the resulting error in Internet Explorer, this is not a browser compatibility issue, it should also work in IE, but it doesn't!

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Reading Values From A Database 0/1 False/true To Populate The Checkbox ?

Mar 20, 2012

I am reading values from a database 0/1 false/true to populate the checkbox .The databse field is 'PPorCollect'. How can i figure out why the checkbox is not populating ?

OpenSQLConnection()
Dim mcommand As New SqlClient.SqlCommand("up_loadOrderID", conn)
mcommand.CommandType = CommandType.StoredProcedure[code]....

I populated a textbox with the value i was reading from the database.....Interesting the value is True/False not 0/1 like i was expecting...so i changed up the above code to the below code with no resolve....

Dim PPorCollect As Integer
PPorCollect = mReader("PPorCollect")
If PPorCollect = False Then[code]...........

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Javascript - WebMethod Not Working When Returning Relatively Large String

Dec 9, 2011

I am using Virtual Basic with ASP.NET in Visual Studio 2008. I am using Webmethod to communicate from/to the server with the client. Data can be queried and returned in small amount, but when I try get a relatively large amount of data, it's returning me a Server 500 error. My data is 226561 character long, so it's not that large, but it's relatively larger than my other working testing set, which are about 10k character long.

JavaScript:
PageMethods.my_func("context", success);
function success(result, userContext, methodName) {

[code]....

Is there anything I can change to increase WebMethod returned string length limit? Is there even a length limit or is it some other problem I could not see?

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Javascript - Response Object Not Returning Excel Stream In Update Panel?

Oct 11, 2010

I am generating an Excel file upon a click of a button in an update panel. It is throwing a parsing error.If I keep the button outside the update panel it is working fine. Why isn't it working in the update Panel?

Response.ContentType = "application/vnd.ms-excel"
Response.AddHeader("Content-Disposition",
String.Format("attachment;filename={0}", filename))[code].....

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Unbound DataGridView - Change The Checkbox's Enabled State True Or False (editable Or Not) At The Time Add The Row

Jun 4, 2011

I have created an Unbound DataGridView. It has has 4 Columns Name, Last Name, Picture, CheckBox. I would like to do change the checkbox's enabled state true or false (editable or not) at the time I add the row

Not its checked state :) and would also like to change image that is placed in the Image column cell during the add row.

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.net - How To Set ASP Checkbox State With Javascript

May 1, 2012

In a VB.net app, I have several checkboxes created with regular ASP controls, i.e.asp:CheckBox ID="cb3" runat="server" Checked="true" />I'm trying to implement a "Select all/none" functionality but I'm having a few problems. The Javascript is not changing the state of the checkboxes in Internet Explorer (v9). I tried debugging with IE's dev tools and the checkboxes are definitely getting their checked property set to true. (Also tried setting to "checked".) Here is the JS:

function setCheckboxes( state )
{
var inputs = document.getElementsByTagName("input");

[code]......

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How To Set ASP Checkbox State With Javascript

May 26, 2012

In a VB.net app, I have several checkboxes created with regular ASP controls, i.e. <asp:CheckBox ID="cb3" runat="server" Checked="true" />I'm trying to implement a "Select all/none" functionality but I'm having a few problems. The Javascript is not changing the state of the checkboxes in Internet Explorer (v9). I tried debugging with IE's dev tools and the checkboxes are definitely getting their checked property set to true. (Also tried setting to "checked".) Here is the JS:

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Clicking A Checkbox That Requires Javascript?

Sep 8, 2011

On a webpage they have a checkbox that has an onchange, assuming this is javascript from my past knowledge. However in VB.NET when i click this checkbox by id, name, or even class it doesn't trigger the onchange to tell there webpage that the box is checked.

I'm assuming that i need to use javascript to tell the webpage that the checkbox is checked or somehow implement a browser or java itself into the webbrowser if that is the problem.

Here's the HTML code:

<td bgcolor="#FFFFFF" class="col2">
<input type="checkbox" onchange="updateCheckBox(this); validateNew('openAccountNewUserForm',this);" class="check" name="checkTermsOfUse" id="checkTermsOfUse">

[Code].....

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Javascript - Accessing HTML Checkbox In Code Behind?

Nov 6, 2011

I have a HTML checkbox which will perform a simple validation on another textbox, so the textbox will only be enabled if the checkbox is checked, but I also want to access this checkbox control in code behind to check and uncheck it. I don't think I can use the runat="server" because on the onClick event which will cause ('<%=uitxtVouTypeRedeemValue.ClientID%>') to be output as plain text.

<input type="checkbox"
onclick="document.getElementById('<%=uitxtVouTypeRedeemValue.ClientID%>').disabled =(this.checked)?0:1" id="uichkVouTypeRedeemable" />

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Javascript - Insert Checkbox Selected Value To Textbox In Asp.net?

Mar 26, 2011

I have 5 asp.net checkboxes in webform ...i want as the checkboxes checked and unchecked then its text will be added in textbox i.e if checkbox 1 and checkbox9 will be checked then in textbox the text will be 1,9 and if checkbox1 is unchecked then the textbox text will be 9

How to do this using javascript, vb.net or Jquery

CODE I FOUND :

<script type="text/javascript">
function Test(control, value) {
var str = '';

[Code]....

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Javascript - Checkbox.checked Change When Adding New Dynamic Row

Apr 26, 2011

I am working on a little project and am having some issues with a checkbox. I am adding a number of checkboxes to an ASP table via code by adding rows and columns dynamically. This all works fine except for when I go to check them based on loading a preexisting record. For some reason some of the checkboxes are getting set to TRUE when the new row is added to the table. [Code]

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Javascript - Get Checkbox From Multiple Cells In Html Table?

May 24, 2012

I have dynamic html table and every cell have one checkbox. I want to get the selected checkbox if the user select from multiple checkbox from different row.

function GetAllChecked() {
var chkedshid = new Array();
var rows = new Array();

[Code]....

why why this function return just last selected checkbox for last row in loop? i need the all selected checkbox for all rows!

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Getting The Value Of A Row In A Gridview After Selecting Its Checkbox Using Javascript - Vb- To Avoid Refreshing The Page At Each Select?

Oct 28, 2011

I have aspx gridview with checkbox on evryrow, what is required is whenever we check any of the rows, a query should be launched to change the specific agent -each row consist of agentID, Pass, Status- to Paid Status. using javascriptWhat I need to know is how to loop to get the Checked row and get the ID of the row checked so that I can get THe ID of the Agent in thos row so that I can update its status.using javascriptI found something similar on stackflow:t GridView selected row DataKey in JavascriptBut it is not my case, what is needed is at the check of a checkbox a javascript function should launch through which I could update the selected row in grid view after having the index of this row and this all to avoid refreshing the page.

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Grid View Checkbox And Javascript Not Informing Server Side Code

May 6, 2011

I've got a asp.net gridview and inside of the grid view I have a check box at the header of the grid view like so: [Code] This gives me a nice little check box at the top of the grid view, the event OnCheckedChanged calls a function called SelectAllRows that looks like this: [Code] So if I click this header checkbox it checks all of the items in the gridview, and if I uncheck it, it unchecks all the items in the gridview. This works fine...but what doesn't seem to work is if the page loads up and I check the grid view header checkbox to true and it selects all the items in the gridview, then i click a button such as a DELETE button that calls some server side code. That code simply loops through the grid view and checks if the checkbox has been checked, if it is it calls code to delete an item.

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Javascript - Show Msg Box If User Forgot To Check Asp.net Checkbox Control On Button Click?

Jan 27, 2011

i have 20 checkboxes in usercontrol ... i wanna do whole coding in user control ...

how to show msg box if user forgot to check asp.net checkbox control on button click .. ?

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Javascript - Insert Checkbox Checked Value When Checked To Textbox As Comma Separated String

Nov 9, 2010

Insert checkbox checked value when checked to textbox as comma seperated string in vb.net or javascript

suppose i have 3 checkboxes and and 1 textboxes in my webpage.aspx

when i checked checkbox1 and checkbox2 then in textbox it will appear as 1,2 only on checkboxes checked event ...

and i want its revert also :

if i set textbox de

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Javascript - Code Giving The Msgbox If User Select Or Not Select The Checkbox?

Jan 27, 2011

IT STILL GIVES A MSGBOX IF I SELECT THE CHECKBOX BOX OR NOT ....My code below will redirect to Google in both conditions: If the user selects the checkbox, then it will redirect to www.google.com, but if a user forgets to check the checkbox then it shows the msg box with an ok button. When I click on ok it should redirect to www.google.com

I want When a user forgets to check any of the checkboxes to show a msgbox with an ok button and stay on the same page. Otherwise if user selects any of the checkboxes then redirect to google

[code]...

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Javascript - Submit Checkbox State Without A Submit Button?

Mar 27, 2012

I have a view with a few checkboxes that can be selected or unselected. I'd like to always register any change in a checkbox, without the use of a submit button (the user could forget to do it, and it would waste time). So, is there a way to handle this inside the view? Up to now, I've only used the controller to do that job.

[Code]...

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