How to change ASP:dropdownlist selectionindex in jquery

Question

1.00/5 (2 votes)

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I want to change selectionIndex on button click in jquery
My Code is

ASP.NET

<asp:DropDownList runat="server" ID="d">

</asp:DropDownList>

What I have tried:

$(document).ready(function () {
try {

$('#<%=d.ClientID %>').on('change', function () {
try {
var ban = $('#<%=d.ClientID %>').val();
alert(ban);

}
catch (e) {

}
});
a();
}
catch (e) {
alert(e);
}

});

function a() {
try
{ $("[id*=d]").empty();
var _select = $("<select>");
_select.append($("<option value='0'>Select One</option>"));
_select.append($("<option value='1'>One</option>"));
_select.append($("<option value='2'>Two</option>"));
$("[id*=d]").append(_select.html());
$('#<%=d.ClientID %>').val('1');
$('#<%=d.ClientID %>').change();

}
catch(e)
{
alert(e);
}
}

It is not working.

If I add statically option to

<option value='0'>Select One</option>
<option value='1'>One</option>
<option value='2'>Two</option>
and modify a() function
function a() {
try
{
$('#<%=d.ClientID %>').val('1');
$('#<%=d.ClientID %>').change();

}
catch(e)
{
alert(e);
}
}
Now it is working

Posted 18-Mar-16 1:44am

Member 7909353

Updated 23-Mar-16 1:12am

v9

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Comments

Vikram Dalwadiya 18-Mar-16 9:37am

r u want selected value of drop-down on click button event ?

Member 7909353 21-Mar-16 2:56am

no I want to change index and get selected value on click buton event

3 solutions

Solution 2

Use The Below code It's will be working
$("select#elem").val('0');

instead of select#elem u can give Your Asp Dropdown Id

Posted 23-Mar-16 0:43am

Ram349

Solution 1

You've not explained what the problem is or what you're trying to do so I can only guess that what you actually mean is this;

var ban = $('#<%=d.ClientID %>').val();

Posted 18-Mar-16 2:02am

F-ES Sitecore

Comments

Member 7909353 21-Mar-16 2:39am

I want to change index on button click

F-ES Sitecore 21-Mar-16 5:28am

$('#<%=d.ClientID %>').val('1');

Member 7909353 21-Mar-16 6:21am

It is working but do not call indexchange event

$(document).ready(function () {
try {
$('#<%=d.ClientID%>').on('change', function () {
try {
var StateCode = $('#<%=d.ClientID %> :selected').val();

}
catch (e) {

}
});

}
catch (e) {
alert(e);
}

});

F-ES Sitecore 21-Mar-16 6:48am

var ddl = $('#<%=d.ClientID %>');
ddl.val('1');
ddl.change();

Ram349 23-Mar-16 6:41am

Use the the below code
$("select#elem").val('0');

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Member 7909353 · Accepted Answer · 2016-03-23T01:12:00

JavaScript

function a(Value)

{

                    _select.append($("<option value='0'>Select One</option>"));
                    _select.append($("<option value=" + Value+ ">" + NameText + "</option>"));
                    $("[id*=ddlStateMain]").append(_select.html());
                   
                 
                    $('#<%=ddlStateMain.ClientID %>').val(Value);
                    $('#<%=ddlStateMain.ClientID %>').change();
}