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Trying to pass dropdownlist selected value in a querystring via asp hyperlink control

Posted on 2009-05-04
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Last Modified: 2013-11-07
I have a dropdown list control and an asp hyperlink. I want to be able to pass the selected value of the dropdown in the hyperlink when the user clicks the link. Have tried the following but to no avail...
int pid = Convert.ToInt32(ddlpartno.SelectedItem.Value);

lnkpartdetail.NavigateUrl = "~/production/pn_detail.aspx?partnoid_i=(pid)"

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Question by:jazzcatone
2 Comments
 
LVL 39

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Pratima Pharande earned 250 total points
ID: 24301543
int pid = Convert.ToInt32(ddlpartno.SelectedItem.Value);
lnkpartdetail.NavigateUrl = "~/production/pn_detail.aspx?partnoid_i=" & pid

OR

int pid = Convert.ToInt32(ddlpartno.SelectedItem.Value);
lnkpartdetail.NavigateUrl = "~/production/pn_detail.aspx?partnoid_i=(" & pid & ")"

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LVL 29

Assisted Solution

by:David H.H.Lee
David H.H.Lee earned 250 total points
ID: 24311472
Hi jazzcatone,
A little bit of modification for pratima_mcs proposed if you're running under code-behind. It should be "+" sign instead of "&" sign during append the string in c# environment.
eg:
int pid = Convert.ToInt32(ddlpartno.SelectedItem.Value);
lnkpartdetail.NavigateUrl = "~/production/pn_detail.aspx?partnoid_i=" + pid;

If you're running under client script, try this alternative solution:

page_load event
============
if(!IsPostBack){
  lnkpartdetail.attributes.add("onClick","javascript:NavigateURL('~/production/pn_detail.aspx?partnoid_i=') ;return false;");
}

<script>
function NavigateURL(strURL){
 var objDrp=document.getElementById('<%= ddlpartno.ClientId%>');

 if(objDrp.selectedIndex>0){
    location.href=strURL + objDrp.value;
 }
}
</script>


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