How to add facebook button for dynamic links in asp.net?

Question

I am making a website in which i am sending 10 links to all users and i am using 10 panels for every add i am sending, every panel has two buttons one to view the add and one to share the add on their facebook profile so i want to know how can i take the url from that href or link button and put assign it on a facebook share button so user can post that link on their facebook timeline, over that all these links will get refreshed randomly every day automatically. So how can i achieve this ?

 

My code--

 

<asp:Panel ID="Panel1" runat="server">
<table class="table table-striped table-bordered">
    <tr>
        <td>Ads 1</td>
        <td>
           Link
        </td>
        <td>

            <asp:Button ID="Button21" runat="server" OnClick="Button21_Click" Text="View" CssClass="btn btn-primary btn-sm" />
            <asp:Button ID="Button2" runat="server" Text="Share" CssClass="btn btn-danger btn-sm" />

        </td>
    </tr>
</table>
</asp:Panel>

 This is my code for creating the panel and setting two buttons in it, i have 9 more panels like this below this code.

 

How can i make this share button ? which takes the href from link button or hyperlink(i am using button click even to redirect the user but i can change it accordingly) and use that url as a share link ?

 

Thanks