Please cosider this scenario:
I have a form with 3 drop down list.I place these controls in an update panel.when my users select an Item with value greater that 2 in first drop down list I disable second and third drop down list with jQuery. My problem is after any post back all drop down list are enable.I know this is normal but how I can check the form again and disable controls that should be disable?
thanks
Edit 1)
this is my code:
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<table border="1" cellpadding="0" cellspacing="0">
<tr>
<td>
<asp:DropDownList ID="DropDownList1" runat="server" Width="100px">
<asp:ListItem Value="1" Text="1" />
<asp:ListItem Value="2" Text="2" />
<asp:ListItem Value="3" Text="3" />
</asp:DropDownList>
</td>
</tr>
<tr>
<td>
<asp:DropDownList ID="DropDownList2" runat="server" Width="100px">
<asp:ListItem Value="1" Text="1" />
<asp:ListItem Value="2" Text="2" />
<asp:ListItem Value="3" Text="3" />
</asp:DropDownList>
</td>
</tr>
<tr>
<td>
<asp:DropDownList ID="DropDownList3" runat="server" Width="100px">
<asp:ListItem Value="1" Text="1" />
<asp:ListItem Value="2" Text="2" />
<asp:ListItem Value="3" Text="3" />
</asp:DropDownList>
<br />
</td>
</tr>
</table>
<div>
<asp:Button ID="Button1" runat="server" Text="Cause Post Back" Width="200px"
onclick="Button1_Click"/>
</div>
</ContentTemplate>
</asp:UpdatePanel>
and javascript:
$(document).ready(function () {
function Disable(item) {
item.attr('disabled', 'disabled');
}
$('#DropDownList1').change(function () {
if ($(this).val() > 2) {
Disable($('#DropDownList2'));
Disable($('#DropDownList3'));
}
else {
Enable($('#DropDownList2'));
Enable($('#DropDownList3'));
}
}).change();
function Enable(item) {
item.removeAttr('disabled');
}
});
Am I missing something?
$('#dropdown1').change(function()
{
if ( $(this).val() > 2 )
{
$('#dropdown2, #dropdown3').prop('disabled', true);
}
else
{
$('#dropdown2, #dropdown3').prop('disabled', false);
}
})
.change();
The problem is due to updatepanel, because it is partialy post back your page.
Please put your Jquery inside a function pageLoad()
function pageLoad() {
// Put your code here...
}
Hope it will solve your issue.
try this
AutoPostBack="true"
as
<asp:DropDownList ID="DropDownList1" runat="server" Width="100px"
AutoPostBack="true">
<asp:ListItem Value="1" Text="1" />
<asp:ListItem Value="2" Text="2" />
<asp:ListItem Value="3" Text="3" />
</asp:DropDownList>
Add a hidden field, which stores the state of the dropdowns..for example 0=disabled, 1=enabled...when you disable the dropdown set the value of the hidden field as 0..when enabled set it as 1. Then when the form is posted and reloaded, read the value of the hidden fields and enable/disable the dropdowns accordingly.
$(function(){
if($("#hiddenFieldID").val()=="0")
//disable
else
//enable
});
Related
Im trying to take some selected value to use it in an insert method I have to the database (this is working with given vaalues), now I want to give to take the value from a form. Everything's fine but the radio buttons... I do not know how to take the value :P.
Here it is:
<tr>
<td>Oral/Written Communications:</td>
<td>
<asp:RadioButton ID="form1_1" GroupName="form1" runat="server" Text="1" />
<asp:RadioButton ID="form1_2" GroupName="form1" runat="server" Text="2" />
<asp:RadioButton ID="form1_3" GroupName="form1" runat="server" Text="3" />
<asp:RadioButton ID="form1_4" GroupName="form1" runat="server" Text="4" />
<asp:RadioButton ID="form1_5" GroupName="form1" runat="server" Text="5" />
<br /></td>
</tr>
And in the backend...
int selected = form1.value
This is not working... Not even recognizing the form1. etc.... How can I handle this?
EB.
When you work with a RadioButton control, each one of them is a separate control and you need to check them like this:
string selectedValue;
if (form1_1.Checked)
selectedValue = form1_1.Text;
else if (form1_2.Checked)
selectedValue = form1_2.Text;
...
You can also go after the Request.Form collection, but I don't find it to be easy to use with RadioButton controls.
Maybe the easiest thing, if you can change the code slightly, is to use a RadioButtonList control:
<asp:RadioButtonList ID="form1list" runat="server" RepeatDirection="Horizontal" RepeatLayout="Flow">
<asp:ListItem Text="1" />
<asp:ListItem Text="2" />
<asp:ListItem Text="3" />
<asp:ListItem Text="4" />
<asp:ListItem Text="5" />
</asp:RadioButtonList>
Then you can simply refer to the control as a whole:
form1list.SelectedValue
I am trying to create a multiple choice quiz whereby users will answer the questions and will be presented with a score upon submission, I am using required field validators to present a message if they do not answer one of the questions, however the system will still calculate their score even if I have not completed all the questions when hitting submit.
I need to be able to stop submission until all radio button lists are completed but i'm not sure how to do this.
My code is here:
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<asp:Label ID="QLabel1" runat="server" Text="Question 1"></asp:Label>
<asp:RadioButtonList ID="RadioButtonList1" runat="server"
RepeatDirection="Horizontal" RepeatLayout="Table">
<asp:ListItem Text="*Answer 1*" Value="Incorrect 1" />
<asp:ListItem Text="*Answer 2*" Value="Correct" />
<asp:ListItem Text="*Answer 3*" Value="I" />
<asp:ListItem Text="*Answer 4*" Value="4" />
</asp:RadioButtonList>
<div>
<asp:RequiredFieldValidator ID="Q1requiredvalidator" runat="server" Display="Dynamic" ControlToValidate="RadioButtonList1" CssClass="text-danger" ErrorMessage="Ensure question 1 is completed"></asp:RequiredFieldValidator>
</div>
<asp:Label ID="QLabel2" runat="server" Text="Question 2"></asp:Label>
<asp:RadioButtonList ID="RadioButtonList2" runat="server"
RepeatDirection="Horizontal" RepeatLayout="Table">
<asp:ListItem Text="*Answer 1*" Value="Incorrect 1" />
<asp:ListItem Text="*Answer 2*" Value="Correct" />
<asp:ListItem Text="*Answer 3*" Value="I" />
<asp:ListItem Text="*Answer 4*" Value="4" />
</asp:RadioButtonList>
<div>
<asp:RequiredFieldValidator ID="Q2requiredvalidator" runat="server" Display="Dynamic" ControlToValidate="RadioButtonList2" CssClass="text-danger" ErrorMessage="Ensure question 2 is completed"></asp:RequiredFieldValidator>
</div>
<asp:Label ID="QLabel3" runat="server" Text="Question 3"></asp:Label>
<asp:RadioButtonList ID="RadioButtonList3" runat="server"
RepeatDirection="Horizontal" RepeatLayout="Table">
<asp:ListItem Text="*Answer 1*" Value="Incorrect 1" />
<asp:ListItem Text="*Answer 2*" Value="Correct" />
<asp:ListItem Text="*Answer 3*" Value="I" />
<asp:ListItem Text="*Answer 4*" Value="4" />
</asp:RadioButtonList>
<div>
<asp:RequiredFieldValidator ID="Q3requiredvalidator" runat="server" Display="Dynamic" ControlToValidate="RadioButtonList3" CssClass="text-danger" ErrorMessage="Ensure question 3 is completed"></asp:RequiredFieldValidator>
</div>
<asp:Label ID="QLabel4" runat="server" Text="Question 4"></asp:Label>
<asp:RadioButtonList ID="RadioButtonList4" runat="server"
RepeatDirection="Horizontal" RepeatLayout="Table">
<asp:ListItem Text="*Answer 1*" Value="Incorrect 1" />
<asp:ListItem Text="*Answer 2*" Value="Correct" />
<asp:ListItem Text="*Answer 3*" Value="I" />
<asp:ListItem Text="*Answer 4*" Value="4" />
</asp:RadioButtonList>
<div>
<asp:RequiredFieldValidator ID="Q4requiredvalidator" runat="server" Display="Dynamic" ControlToValidate="RadioButtonList4" CssClass="text-danger" ErrorMessage="Ensure question 4 is completed"></asp:RequiredFieldValidator>
</div>
<asp:Label ID="QLabel5" runat="server" Text="Question 5"></asp:Label>
<asp:RadioButtonList ID="RadioButtonList5" runat="server"
RepeatDirection="Horizontal" RepeatLayout="Table">
<asp:ListItem Text="*Answer 1*" Value="Incorrect 1" />
<asp:ListItem Text="*Answer 2*" Value="Correct" />
<asp:ListItem Text="*Answer 3*" Value="I" />
<asp:ListItem Text="*Answer 4*" Value="4" />
</asp:RadioButtonList>
<div>
<asp:RequiredFieldValidator ID="Q5requiredvalidator" runat="server" Display="Dynamic" ControlToValidate="RadioButtonList5" CssClass="text-danger" ErrorMessage="Ensure question 5 is completed"></asp:RequiredFieldValidator>
</div>
<asp:Label ID="QLabel6" runat="server" Text="Question 6"></asp:Label>
<asp:RadioButtonList ID="RadioButtonList6" runat="server"
RepeatDirection="Horizontal" RepeatLayout="Table">
<asp:ListItem Text="*Answer 1*" Value="Incorrect 1" />
<asp:ListItem Text="*Answer 2*" Value="Correct" />
<asp:ListItem Text="*Answer 3*" Value="I" />
<asp:ListItem Text="*Answer 4*" Value="4" />
</asp:RadioButtonList>
<div>
<asp:RequiredFieldValidator ID="Q6requiredvalidator" runat="server" Display="Dynamic" ControlToValidate="RadioButtonList6" CssClass="text-danger" ErrorMessage="Ensure question 6 is completed"></asp:RequiredFieldValidator>
</div>
<asp:Label ID="QLabel7" runat="server" Text="Question 7"></asp:Label>
<asp:RadioButtonList ID="RadioButtonList7" runat="server"
RepeatDirection="Horizontal" RepeatLayout="Table">
<asp:ListItem Text="*Answer 1*" Value="Incorrect 1" />
<asp:ListItem Text="*Answer 2*" Value="Correct" />
<asp:ListItem Text="*Answer 3*" Value="I" />
<asp:ListItem Text="*Answer 4*" Value="4" />
</asp:RadioButtonList>
<div>
<asp:RequiredFieldValidator ID="Q7requiredvalidator" runat="server" Display="Dynamic" ControlToValidate="RadioButtonList7" CssClass="text-danger" ErrorMessage="Ensure question 7 is completed"></asp:RequiredFieldValidator>
</div>
<asp:Label ID="QLabel8" runat="server" Text="Question 8"></asp:Label>
<asp:RadioButtonList ID="RadioButtonList8" runat="server"
RepeatDirection="Horizontal" RepeatLayout="Table">
<asp:ListItem Text="*Answer 1*" Value="Incorrect 1" />
<asp:ListItem Text="*Answer 2*" Value="Correct" />
<asp:ListItem Text="*Answer 3*" Value="I" />
<asp:ListItem Text="*Answer 4*" Value="4" />
</asp:RadioButtonList>
<div>
<asp:RequiredFieldValidator ID="Q8requiredvalidator" runat="server" Display="Dynamic" ControlToValidate="RadioButtonList8" CssClass="text-danger" ErrorMessage="Ensure question 8 is completed"></asp:RequiredFieldValidator>
</div>
<asp:Label ID="QLabel9" runat="server" Text="Question 9"></asp:Label>
<asp:RadioButtonList ID="RadioButtonList9" runat="server"
RepeatDirection="Horizontal" RepeatLayout="Table">
<asp:ListItem Text="*Answer 1*" Value="Incorrect 1" />
<asp:ListItem Text="*Answer 2*" Value="Correct" />
<asp:ListItem Text="*Answer 3*" Value="I" />
<asp:ListItem Text="*Answer 4*" Value="4" />
</asp:RadioButtonList>
<div>
<asp:RequiredFieldValidator ID="Q9requiredvalidator" runat="server" Display="Dynamic" ControlToValidate="RadioButtonList9" CssClass="text-danger" ErrorMessage="Ensure question 9 is completed"></asp:RequiredFieldValidator>
</div>
<asp:Label ID="QLabel10" runat="server" Text="Question 10"></asp:Label>
<asp:RadioButtonList ID="RadioButtonList10" runat="server"
RepeatDirection="Horizontal" RepeatLayout="Table">
<asp:ListItem Text="*Answer 1*" Value="Incorrect 1" />
<asp:ListItem Text="*Answer 2*" Value="Correct" />
<asp:ListItem Text="*Answer 3*" Value="I" />
<asp:ListItem Text="*Answer 4*" Value="4" />
</asp:RadioButtonList>
<div>
<asp:RequiredFieldValidator ID="Q10requiredvalidator" runat="server" Display="Dynamic" ControlToValidate="RadioButtonList10" CssClass="text-danger" ErrorMessage="Ensure question 10 is completed"></asp:RequiredFieldValidator>
</div>
<asp:Button ID="Button1" runat="server" Text="Submit Final Answers" OnClick="Submit_Click" Visible="true" />
<script runat="server">
protected void Submit_Click(object sender, EventArgs e)
{
int score = 0;
List<RadioButtonList> list = new List<RadioButtonList>() { RadioButtonList1, RadioButtonList2, RadioButtonList3, RadioButtonList4, RadioButtonList5, RadioButtonList6, RadioButtonList7, RadioButtonList8, RadioButtonList9, RadioButtonList10 };
foreach (var element in list)
{
if (element.SelectedValue == "Correct")
{
score++;
}
}
Response.Write("you scored: " + score);
Button1.Visible = false;
}
</script>
</asp:Content>
Before hitting submit:
After Hitting submit when no answers are filled:
My submit button dissapears like it is supposed to but i want to be able to stop it from being submitted and the score output until all questions are answered.
New to all these so sorry if this seems easy or stupid.
Thanks
I just want to ask what's the problem in my codes here? The OnSelectedIndexChanged event in #cbList is working fine but the ondrop event in #sortable2 is not working. I tried placing it inside and outside the update panel. The code that is being called in the ondrop is in code behind. It just change the dummyText's text.
Here's my code:
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" ChildrenAsTriggers="true">
<ContentTemplate>
<input type="hidden" runat="server" id="hdnSelectedValue" />
<asp:CheckBoxList ID="cbList" runat="server" AutoPostBack="true" OnSelectedIndexChanged="cbList_SelectedIndexChanged">
<asp:ListItem Text="One" Value="1">
</asp:ListItem>
<asp:ListItem Text="Two" Value="2">
</asp:ListItem>
<asp:ListItem Text="Three" Value="3">
</asp:ListItem>
<asp:ListItem Text="Four" Value="4">
</asp:ListItem>
<asp:ListItem Text="Five" Value="5">
</asp:ListItem>
</asp:CheckBoxList>
<br />
<asp:Label ID="lblSelection" runat="server"></asp:Label>
<asp:Label ID="dummyText" runat="server" Text="Here"></asp:Label>
<ul id="sortable2" runat="server" class="connectedSortable" ondrop="Change_Text"></ul>
</ContentTemplate>
</asp:UpdatePanel>
</form>
ondrop="" is client side event. You cannot wired up this event in code behind.
Check this link for more information on OnDrop event
I want to populate a second dropdownlist based on the index of the first.
<asp:ScriptManager ID="sm" runat="server" />
<asp:DropDownList ID="ddl1" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddl1_SelectedIndexChanged">
<asp:ListItem Value="1" />
<asp:ListItem Value="2" />
</asp:DropDownList>
<asp:UpdatePanel ID="up" runat="server">
<Triggers >
<asp:AsyncPostBackTrigger ControlID="ddl1" EventName="SelectedIndexChanged" />
</Triggers>
<ContentTemplate >
<asp:DropDownList ID="ddl2" runat="server">
<asp:ListItem Value="1" />
<asp:ListItem Value="2" />
</asp:DropDownList>
</ContentTemplate>
</asp:UpdatePanel>
Code Behind:
protected void ddl1_SelectedIndexChanged(object sender, EventArgs e)
{
ddl2.SelectedIndex = ddl1.SelectedIndex;
}
I am getting a complete post back. No ajax at work.
i have a shopping cart solution written with Asp.Net .
in Cart Web Page, i have a list view for products and each item has a dropdownlist for quantity .
i want to update total price of each item when user change quantity .
i want to use jquery and onchange event of dropdownlist .
<asp:ListView ID="repItemList" runat="server" DataKeyNames="ID">
<LayoutTemplate>
<asp:PlaceHolder ID="itemPlaceholder" runat="server" />
</LayoutTemplate>
<ItemTemplate>
<div class="margin">
<table class="tbl">
<tbody>
<tr>
<td class="four">
<table>
<tbody>
<tr>
<td class="fone"><%# Eval("Total")%></td>
<td class="ftwo">
<asp:DropDownList ID="lstCount" runat="server" CssClass="DropDownList" onchange="" >
<asp:ListItem Text="1" Value="1" />
<asp:ListItem Text="2" Value="2" />
<asp:ListItem Text="3" Value="3" />
<asp:ListItem Text="4" Value="4" />
<asp:ListItem Text="5" Value="5" />
</asp:DropDownList>
</td>
<td class="ffour"><%# Eval("Price")%>
</td>
You can get the drop down value on change like,
$('.ftwo').change(function(){
var price=$(this).closest('tr').find('.fone').html();
var quantity =$(this).val();
$(this).closest('tr').find('.ffour').html(price * quantity);
});
you can refer here