Hi  arehman,

Please refer below sample.

HTML

CS.aspx

<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script type="text/javascript">
    $(function () {
        $("[id*=GridView1]").find("[id*=lnkSelect]").click(function () {
            var row = $(this).closest("tr");
            var id = row.find("TD").eq(0).html();
            var name = row.find("TD").eq(1).find("SPAN").eq(0).html();
            var country = row.find("TD").eq(2).find("SPAN").eq(1).html();
            alert(id + "\n" + name + "\n" + country);
            return false;
        });
    });       
</script>
<div>
    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false">
        <Columns>
            <asp:BoundField DataField="Id" HeaderText="CustomerId" />
            <asp:TemplateField HeaderText="Name">
                <ItemTemplate>
                    <uc:data ID="ucName" runat="server" Name='<%# Eval("Name") %>' />
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Country">
                <ItemTemplate>
                    <uc:data ID="ucCountry" runat="server" Country='<%# Eval("Country") %>' />
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Show">
                <ItemTemplate>
                    <asp:LinkButton ID="lnkSelect" runat="server" Text="Select" />
                </ItemTemplate>
            </asp:TemplateField>
        </Columns>
    </asp:GridView>
</div>

WebUserControl.ascx

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="WebUserControl.ascx.cs"
    Inherits="WebUserControl" %>
<asp:Label ID="lblName" Text="" runat="server" />
<asp:Label ID="lblCountry" Text="" runat="server" />

Namespaces

C#

using System.Data;

 VB.Net

Imports System.Data

Code

C#

 CS.aspx.cs

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id", typeof(int)),
                        new DataColumn("Name", typeof(string)),
                        new DataColumn("Country",typeof(string)) });
        dt.Rows.Add(1, "John Hammond", "United States");
        dt.Rows.Add(2, "Mudassar Khan", "India");
        dt.Rows.Add(3, "Suzanne Mathews", "France");
        dt.Rows.Add(4, "Robert Schidner", "Russia");
        GridView1.DataSource = dt;
        GridView1.DataBind();
    }
}

WebUserControl.ascx.cs

public partial class WebUserControl : System.Web.UI.UserControl
{
    public string Name
    {
        get
        {
            return lblName.Text;
        }
        set
        {
            lblName.Text = value;
        }
    }
    public string Country
    {
        get
        {
            return lblCountry.Text;
        }
        set
        {
            lblCountry.Text = value;
        }
    }
}

VB.Net

VB.aspx.vb

Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
    If Not Me.IsPostBack Then
        Dim dt As New DataTable()
        dt.Columns.AddRange(New DataColumn() {New DataColumn("Id", GetType(Integer)), _
                                               New DataColumn("Name", GetType(String)), _
                                               New DataColumn("Country", GetType(String))})
        dt.Rows.Add(1, "John Hammond", "United States")
        dt.Rows.Add(2, "Mudassar Khan", "India")
        dt.Rows.Add(3, "Suzanne Mathews", "France")
        dt.Rows.Add(4, "Robert Schidner", "Russia")
        GridView1.DataSource = dt
        GridView1.DataBind()
    End If
End Sub

WebUserControl.ascx.vb

Public Property Name As String
    Get
        Return lblName.Text
    End Get
    Set(ByVal value As String)
        lblName.Text = value
    End Set
End Property

Public Property Country As String
    Get
        Return lblCountry.Text
    End Get
    Set(ByVal value As String)
        lblCountry.Text = value
    End Set
End Property

Screenshot