Data Controls :: Call A Record On Datalist By Button Click And Display Record On FormView In Model

How to Call a record on datalist by button click and display record on formview in model using Username

Here is what i tried

 <asp:DataList ID="GetMergedAll." runat="server">
<asp:Label ID="Name" runat="server" Text="Label"></asp:Label>
<asp:Label ID="Post" runat="server" Text="Label"></asp:Label>
<asp:LinkButton ID="LinkButton6" runat="server">LinkButton</asp:LinkButton>
</asp:DataList>
protected void Page_Load(object sender, EventArgs e)

[Code] ....

HTML

 model here

<asp:FormView ID="Post" runat="server">
<asp:Label ID="Name" runat="server" Text="Label"></asp:Label>
<asp:Label ID="Post" runat="server" Text="Label"></asp:Label>
</asp:FormView>