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Drop down Selected chenaged is not firing
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ASP.NET
Hi
XML
<asp:DropDownList ID="ddlManufaturemonth" runat="server" AutoPostBack="true" CssClass="select_box"
                                                               Width="80px"
                                                               onselectedindexchanged="ddlManufaturemonth_SelectedIndexChanged" onchange="javascript:return ValidateMonthandYear(this);">
                                                           </asp:DropDownList>

in this only one event is firing that is on change i want fire the both here selected change is not firing.Could any one help me


Regards,
Rahul.
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Comments
Harshil_Raval 17-Sep-13 9:06am    
where is your javascript function ValidateMonthandYear?
naveen pallela 17-Sep-13 9:08am    
function ValidateMonthandYear() {
debugger;
var monthformat = { 'Jan': 01, 'Feb': 02, 'Mar': 03, 'Apr': 04, 'May': 05, 'Jun': 06, 'Jul': 07, 'Aug': 08, 'Sep': 09, 'Oct': 10, 'Nov': 11, 'Dec': 12 };
document.getElementById('<%=lblDateofPurchaseValidation.ClientID%>').innerHTML = '';
document.getElementById('<%=lblMonthandYearofManufacturingvalidation.ClientID%>').innerHTML = '';

//this is the selected Date
var Manufyear = document.getElementById('<%=ddlManufatureyear.ClientID%>').value
var Manufmonth = document.getElementById('<%=ddlManufaturemonth.ClientID%>').value
var ManufDay = document.getElementById('<%=ddlManufatureDay.ClientID%>').value
if (Manufyear != "0" && Manufmonth != "0" && ManufDay != "0") {
var date = Manufyear - +Manufmonth - +ManufDay;
}
else {
return false;
}
phil.o 17-Sep-13 9:29am    
1) var date = Manufyear +" - "+Manufmonth+" - "+ManufDay; => you assign this variable but you do not use it
2) As it has been told to you, you have to return true if your function succeeds
Harshil_Raval 17-Sep-13 9:12am    
It looks good. try to add return true; in if condition. Are you sure it is going in if condition, not in else.
naveen pallela 17-Sep-13 9:20am    
its not the problem with javascript function i want 2 fire both the events but selected chaged is not firing when i keep the on change funtion.when i remove the on change its calling the selected changed event but i want 2 check the valiadtion i need to write on change.....

2 solutions

The onchange clientside event disables the serverside event.

You can do a postback from your javascript function as the follows:
JavaScript
<script language="Javascript">
__doPostBack('__Page', 'MyCustomArgument');
</script></script>


And here is an explanation:
How to call Postback from Javascript[^]
 
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Posted
Updated 17-Sep-13 3:33am
v2
... OK, try the following javascript and let me know how you get on?

JavaScript
function ValidateMonthandYear() {
 debugger;
 var bReturn=true;
 var monthformat = { 'Jan': 01, 'Feb': 02, 'Mar': 03, 'Apr': 04, 'May': 05, 'Jun': 06, 'Jul': 07, 'Aug': 08, 'Sep': 09, 'Oct': 10, 'Nov': 11, 'Dec': 12 };

 document.getElementById('<%=lblDateofPurchaseValidation.ClientID%>').innerHTML = '';
 document.getElementById('<%=lblMonthandYearofManufacturingvalidation.ClientID%>').innerHTML = ''; 

 //this is the selected Date 
 var Manufyear = document.getElementById('<%=ddlManufatureyear.ClientID%>').value ;
 var Manufmonth = document.getElementById('<%=ddlManufaturemonth.ClientID%>').value;
 var ManufDay = document.getElementById('<%=ddlManufatureDay.ClientID%>').value;

 if (Manufyear != "0" && Manufmonth != "0" && ManufDay != "0") {
     var date = Manufyear - +Manufmonth - +ManufDay; 
 }
 else { 
     bReturn = false; 
 }

 return bReturn;
}
 
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