I'm having trouble validating a drop down asp control on button click. I have a panel that contains radio buttons, textboxes, a drop down, and a save button. If the radio button for zip is chosen a drop down list appears (that is binded with data in the code behind) and you must select a zip from the list. I'm having trouble validating on button click of the save button that a selection was made from the downdown list.
I would like to do it with jQuery and tried doing it like so that pops up and alert but its not working. Like to have it validate the selection before it does on the onClick of the button.
<script type="text/javascript">
$(document).ready(function() {
$('#btn_submit').click(function() {
if ($('#ZIPDD').val() > 0) {
return true;
}
else {
alert('Please select a zip.');
return false;
}
});
});
<asp:UpdatePanel runat="server" ID="UP6" ChildrenAsTriggers="false" UpdateMode="conditional">
<ContentTemplate>
<table style="text-align:center;" cellpadding="5px">
<tr>
<td>
<table runat="server" id="_table" width="100%" cellspacing="10">
<tr>
<td style="width:100px; font-weight:bold; padding-bottom:inherit;" valign="middle">
<div>STEP 1:</div>
<div>Enter a #</div>
</td>
<td align="left" valign="middle" style=" margin-bottom:15px;">
<asp:TextBox runat="server" ID="txt_nbr" Width="70px"/>
<asp:Button ID="Button1" Text="Continue" runat="server" OnClick="Button1_Click"/>
</td>
</tr>
<tr>
<td style="width:100px; font-weight:bold; margin-bottom:15px;" valign="middle">
</td>
<td style="border:2px solid gray; background-color:Silver;">
<table runat="server" id="SHTable" visible="false" width="100%">
<tr align="left">
<th style="font-weight:bold;border-bottom:2px solid black;">Methods</th>
<th style="font-weight:bold;border-bottom:2px solid black;">Location</th>
<th style="font-weight:bold;border-bottom:2px solid black;"> <asp:Label runat="server" ID="DOTEXT"></asp:Label></th>
</tr>
<tr align="left">
<td>
<div style="margin-bottom:10px;"><asp:CheckBox runat="server" ID="ZIP" Text="ZIP" AutoPostBack="true" OnCheckedChanged="ZIP_CheckedChanged" /></div>
</td>
<td style="width:300px;">
<asp:DropDownList runat="server" ID="ZIPDD" Visible="false"/><br /><asp:Label ID="ziplabel" Visible="false" runat="server" style="color: red; font-size:12px;"/>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td style="width:100px; font-weight:bold; margin-bottom:15px;" valign="middle">
<div>Confirm changes and hit save</div>
</td>
<td align="left" valign="middle">
<asp:Button Text="Save" runat="server" ID="btn_submit" OnClick="btn_submit_Click" />
</td>
</tr>
</table>
</td>
</tr>
</table>
</ContentTemplate>
Binding to the dropdown in the code behind on page load
protected void Page_Load(object sender, EventArgs e)
{
if (ZIPDD.Items.Count == 0)
{
Loadzips();
}
}
private void LoadBranches()
{
using (SqlConnection SQLCONN)
{
SQLCONN.Open();
SqlCommand SQLCOMM = SQLCONN.CreateCommand();
SQLCOMM.CommandText = "SELECT * FROM table";
IDataReader dr = SQLCOMM.ExecuteReader();
ZIPDD.DataSource = dr;
ZIPDD.DataValueField = "ZIPID";
ZIPDD.DataTextField = "ZIPLABEL";
ZIPDD.DataBind();
ZIPDD.Items.Insert(0, new ListItem(String.Empty, String.Empty));
ZIPDD.SelectedIndex = 0;
}
}
When you are planning to use javascript/jquery, pay attention to how controls are rendered in the client side. You are setting visible="false" to table and controls, they will never render in the client side. You can't find them using jquery. To work properly, you need to set this:
<table runat="server" id="SHTable" visible="false" width="100%">
to this:
<table runat="server" id="SHTable" style="display:none" width="100%">
and also change this:
<asp:DropDownList runat="server" ID="ZIPDD" Visible="false"/>
to this:
<asp:DropDownList runat="server" ID="ZIPDD" style="display:none"/>
To test your script, set style="display:block" for the table and the dropdown also, otherwise you will see porpup to select a zip (dropdown value is 0).
Good luck!
Why dont you look at using the jQuery.validate plugin. It will validate all form items that have the class "required" attached to it. You could use jQuery and addClass to add the class required to the dropdown if the checkbox is highlighted.
if($('#radio_button').is(':checked')) {
$( ".dropDownClassIdentifier" ).addClass( "required" );
}
else
{
$( ".dropDownClassIdentifier" ).removeClass( "required" );
}
http://jqueryvalidation.org/ and
http://api.jquery.com/addClass/ are good places to start looking for documentation
Related
I am creating multiple-choice questions in ASP.NET Web Forms. I am getting the question and multiple choice options from the database. Is there a simple way to hide the 3rd option (C) when there are only two inputs (True or False)? Thank you in advance!
Here is aspx code:
<tr>
<td class="style7">A.</td>
<td style="text-align: left">
<asp:RadioButton ID="RbA" runat="server" GroupName="gtog"/>
</td>
</tr>
<tr>
<td class="style7">B.</td>
<td style="text-align: left">
<asp:RadioButton ID="RbB" runat="server" GroupName="gtog" />
</td>
</tr>
<tr>
<td class="style7">C.</td>
<td style="text-align: left" >
<asp:RadioButton ID="RbC" runat="server" GroupName="gtog" />
</td>
</tr>
As we have no info as to what is happening on your backend I'll keep this generic.
Add an id and runat="server to the final table row. You can then access that serverside to hide an show the row.
ASPX
<tr id="rowC" runat="server">
<td class="style7">C.</td>
<td style="text-align: left" >
<asp:RadioButton ID="RbC" runat="server" GroupName="gtog" />
</td>
</tr>
C#
if(answerCount == 2)
{
rowC.visible = false;
}
On a side note, you really should avoid using tables for layout. It is now 2020 there are many better ways to layout a form (or anything).
Yes, you can check if the item from the database is of Type bool - if this is true make 3rd Options(C) hidden.
So create a variable that checks the item from the database, if its a Boolean then add hide RbC.
Type b = itemFromDB.GetType();
if(b is bool)
RbC.hidden = true;
I have a usercontrol and there is a radgrid included in it. I need to fetch label GetName's text from the radgrid using jquery.I have to check the label's value for each record. Can someone please help me to do it.Thanks.This is my radgrid.
<telerik:RadGrid ID="Gridview1">
<Columns>
<telerik:GridTemplateColumn UniqueName="tempcolumn">
<HeaderTemplate>
<table>
<tr>
<td>
<asp:Label ID="Header" runat="server" Text="Name"></asp:Label>
</td>
</tr>
</table>
</HeaderTemplate>
<ItemTemplate>
<table>
<tr>
<td>
<asp:Label ID="Getname" runat="server"></asp:Label>
</td>
</tr>
</table>
</ItemTemplate>
</telerik:GridTemplateColumn>
</Columns>
</telerik:RadGrid>
The code you show there is in your .aspx page, not the generated one.
In HTML result, the aps:label would be something like that :
<span Id="ctl00$blablabla$Getname_random"></span>
So, I would suggest to add a class to your label to use it as selector :
<asp:Label ID="Getname" runat="server" CssClass="getNameClass"></asp:Label>
And then :
$(function () {
//Move in any trigger function (e.g: click)
$('.getNameClass').each(function() {
console.log($(this).text() );
});
});
Hope it helps.
I have a repeater having two columns. In first column i have an image button on click of which i am calling a javascript function.
In the second column i have a label. I want to pass the client id of this label to the javascript function called on click on ImageButton.
<asp:Repeater ID="rptElements" runat="server">
<ItemTemplate>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td>
<table>
<tr>
<td id="tdElementType" runat="server">
<asp:ImageButton ID="imgShow" runat="Server" Visible="false" OnClientClick="return DisplayElementDetails(this);" />
</td>
<td>
<asp:Label ID="lblElementDetails" Text='<%# Eval("ElementDetails")%>' runat="server" />
</td>
</tr>
</table>
</td>
</tr>
</table>
</ItemTemplate>
</asp:Repeater>
I figured it out.
I added following code to the javascript function:
function DisplayElementDetails(obj)
{
var name = obj.id.substring(0,(obj.name.length)-7) + "lblElementDetails"
var obj = document.getElementById(name);
obj.style.display = 'none';
return false;
}
and set the style for label control
<asp:Label ID="lblElementDetails" Text='<%# Eval("ElementDetails")%>' runat="server" style="display:block" />
Its working now.
This can be done by Jquery. Add CSSclass to button and label for selecting them using CSS selectors
<td id="tdElementType" runat="server">
<asp:ImageButton ID="imgShow" runat="Server" Visible="false" CssClass="showButton" /></td>
<td>
<asp:Label ID="lblElementDetails" Text='<%# Eval("ElementDetails")%>' runat="server" CssClass="lblElement"/>
</td>
Reference JQuery on aspx page and call function on click event of image button
<script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function () {
$(".showButton").click(function(){
$(".lblElement").toggle();
});
});
</script>
I have a datalist and I am calling javascript on div click added in datalist ..
How can i get control values on click of my div added in datalist
<asp:DataList ID="DataList1" runat="server">
<ItemTemplate>
<div id="metroaqui" class="divsub" runat="server"
onclick="javascript:getvalues(this);">
<table>
<tr class="clstd">
<td>
<b>IP NO:-</b>
</td>
<td colspan="2" style="width: 20%">
<asp:Label runat="server" ID="ipnolable"
Text='<%# Eval("IpNo") %>'></asp:Label>
</td>
<td>
<b>PATIENT NO:-</b>
</td>
<td colspan="2">
<asp:Label runat="server" ID="Label1"
Text='<%# Eval("PatientNo") %>'>
</asp:Label>
</td>
</tr>
<tr>
</tr>
<tr>
</tr>
</asp:DataList>
To access the control inside the DataList, try to use the following way,
function getVal()
{
var datalist = document.getElementById('<%=DataList1.ClientID%>').childNodes[0];
var tb = datalist.getElementsByTagName("input");
for (var i=0;i<tb.length;i++)
{
//TextBox
if (tb[i].type=="text")
{
alert(tb[i].value);
}
//DropDown
if (tb[i].type=="select")
{
alert(tb[i].options[tb[i].selectedIndex].value);
}
}
}
You can simple use document.getElementById to get the values from your controls.
Note that you id's will change at runtime.
Also remember that label render as span on browser so you will have to check for innerText and innerHtml of your control.
You can take benefit of ClientIDMode="static" for static client id of the server controls. like asp:Label etc.
I'm using ASP.NETand I want to show message behind a textbox when I start to write in it, I want to do that on the client side so I think javascript is the key.
Edit :
My code:
<tr>
<td>
<asp:Label ID="Label1" runat="server" Text="Alternate Email :"></asp:Label>
</td>
<td>
<asp:TextBox ID="_txtAlternateEmail" runat="server" onkeyup="typetext(this);"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Label ID="Label2" runat="server" Text="Security Question :"></asp:Label>
</td>
<td>
<asp:TextBox ID="_txtSecurityQuestion" runat="server"></asp:TextBox>
</td>
</tr>
and the javascript
<script type="text/javascript">
function typetext(tb) {
var mySpanElement = document.getElementById("_txtSecurityQuestion");
mySpanElement.innerText = tb.value;
}
</script>
You could handle the onkeyup event in the textbox
<asp:TextBox ID="_txtAlternateEmail" runat="server" onkeyup="typetext(this);">
</asp:TextBox>
which calls the typetext method. In your typetext method, you can set the span (or whatever HTML element) to the text of the textbox.
function typetext(tb)
{
var mytextbox = document.getElementById('<%=_txtSecurityQuestion.ClientID %>');
mytextbox.value = tb.value;
}