how to call asp event in javascript

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Bind Dropdownlist Using Javascript but I Want To call dropdownlist selected index change event But Invalid postback or callback argument error Are Occured please Give Any Solution

Posted 26-Mar-14 21:46pm

Dhiraj Bhole

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Raul Iloc · Answer 1 · 2014-03-26T21:57:00

You could do this indirectly; from your Javascript you should invoke by using AJAX a new method on your server by passing it the selected index,then that new method will could manage directly the index change event or could invoke your existing select index changed method.
Here is an example of Javascript that use AJAX call for a dropdownlist:

function CartAddressChanged() {
        var address = $("#_addressTypeDropDown").val();
        $.ajax({
            type: "POST",
            url: "/Order/CartForNewAddress",
            data: "address=" + address,
            success: function () {
                document.location = "/Order/ShoppingCart";
            },
            error: function (jqXHR, exception) {
                alert('Uncaught Error.\n' + jqXHR.responseText);
            }
        }); //end ajax call
        return false;
    };

Ajith K Gatty · Answer 2 · 2014-03-26T23:05:00

Solution 2

is this what you need?

DropDownList1.DataSource = sourceName;
DropDownList1.DataValueField = "value";
DropDownList1.DataTextField = "text";
DropDownList1.DataBind();
DropDownList1.Attributes.Add("onChange", "functionName(this);");

Posted 26-Mar-14 23:05pm

Ajith K Gatty