EasyUI export excel cannot download the method that the box pops up

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Before using ajax Hair , The code is as follows （ActionUrl General handler ashx route ）：

        $.ajax({
            url: ActionUrl + '?action=export&ID=' + $('#fm_ID').val(),
            dataType: 'json',
            success: function (jsonstr) {
                //top.art.dialog.tips(' Export succeeded .');
            }
        });

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There is no way to pop up the download box .

Directly enter the address of the relevant page in the browser address bar and open the download box to download , Consider maybe iframe Why .

Because entering the page address can open the download box , So consider opening a new page to download , But because of the export NPOI Why , To pass DataTable, So don't do this .

Want to use window.showModalDialog Methods ：

window.showModalDialog(ActionUrl + '?action=export&ID=' + $('#fm_ID').val());

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But only a blank window pops up , Will not download .

So in the end window.open Realization ：

window.open(ActionUrl + '?action=export&ID=' + $('#fm_ID').val());

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