Open link with QueryString in new tab on GridView Anchor Link Click using JavaScript in ASP.Net

Hi quadriamer,

There is problem with single and double quotes.

So create separate function and call this function on click of anchor tag like below to handle it without confunsion.

HTML

<script type="text/javascript">
    function OpenWindow(id, photo) {
        window.open('Chatbox1.aspx?id=' + id + '&ph=' + photo + '', '_blank', 'location=yes,height=450,width=350,scrollbars=no,status=no');
    }
</script>
<asp:GridView runat="server" ID="gvDetails" AutoGenerateColumns="false">
    <Columns>
        <asp:TemplateField>
            <ItemTemplate>
                <a onclick='OpenWindow("<%#Eval("UserID")%>","<%#Eval("Photo")%>");'>| Open Page
                </a>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>