How do you get a selected value from gridview dropdown using javascript

Question

i have a gridview which has one of the columns as a dropdown. When the user selects a different drop down option i would like to get the selected value. How do i go about this? Please see code below. This code seems to work in IE9 and Firefox but does not work in IE8. In IE8 i get the following error "options.selectedIndex' is null or not an object" .

     var gridview =  document.getElementById('ctl00_ContentPlaceHolder1_grvTrainHistoryCapture');

     if (selectedRowIndex == null) return;
     var statusCell = gridview.rows[parseInt(selectedRowIndex)+ 1].cells[5];
     var ddlStatus = statusCell.childNodes[1];

     var statusID = ddlStatus.options[ddlStatus.options.selectedIndex].value;

Rafael Herscovici · Accepted Answer · 2011-05-17 14:45:52Z

1

EDIT: I HAVE TESTED THIS CODE UNDER IE8, AND IT WORKS AS IT SHOULD. i guess the problem is the object you are passing.

<script type="text/javascript">     
    var e = document.getElementById('test');
    alert(e.options[e.selectedIndex].value );
</script>

edited May 17, 2011 at 14:45

answered May 17, 2011 at 12:12

Rafael Herscovici

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1 Comment

Rafael Herscovici Over a year ago

i see my comment about "check what you are passing as e" was deleted.... the code i have posted 100% works. so the only thing left is to check what you are passing to it.

Mike Ramsey · Accepted Answer · 2012-04-04 18:17:36Z

1

    function ShowDropDownValueInGridView(vIndex) {
        //Assume you are passing in the Row Index and your dropdown control is in a Template in cell 2
        Gridview1 = document.getElementById('<%=GridView1.ClientID%>');
        var cell = Gridview1.rows[vIndex].cells[2]
        var dropdownSelectedValue = cell.childNodes[0].value;
        alert(dropdownSelectedValue);
    }

answered Apr 4, 2012 at 18:17

Mike Ramsey

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