Get NearBy Locations of an address within 5 Kms using Google Maps GeoCoding API in ASP.Net

XML

<?xml version="1.0" encoding="utf-8" ?>
<AreaAddress>
  <Address>
    <Area>
      Keshavanagar Colony, Srinagar Colony Rd, Yousufguda, AP, India ‎
    </Area>
  </Address>
  <Address>
    <Area>
      MCH Park Area, Padala Ramareddy Colony, Yousufguda, Hyderabad, AP, India
    </Area>
  </Address>
  <Address>
    <Area>
      Athithi Inn, Dharam Karan Rd, Divyashakti Appartments, Ameerpet, Hyderabad, AP 500016, India
    </Area>
  </Address>
  <Address>
    <Area>
      7-1-26, Ameerpet Road,Begumpet,Hyderabad, Andhra Pradesh 500016, India ‎
    </Area>
  </Address>
</AreaAddress>

      <asp:GridView ID="GridView1" AutoGenerateColumns="false" runat="server">
            <Columns>
                <asp:BoundField HeaderText="Address" DataField="Area" />
                <asp:TemplateField>
                    <ItemTemplate>
                        <asp:Button ID="Button1"  runat="server" Text = "Get Details" OnClick="GetDetails" />
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>
        <iframe id="frmGoogleMaps" runat="server" width="425" height="350" frameborder="0"
            scrolling="no" marginheight="0" marginwidth="0" src="">
        </iframe>

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!this.IsPostBack)
        {
            DataSet ds = new DataSet();
            ds.ReadXml(Server.MapPath("~/XML/Area.xml"));
            GridView1.DataSource = ds;
            GridView1.DataBind();
        }
    }

    protected void GetDetails(object sender, EventArgs e)
    {
        string address = ((sender as Button).NamingContainer as GridViewRow).Cells[0].Text.Trim().Replace(" ", "+");
        frmGoogleMaps.Attributes["src"] = string.Format("https://maps.google.com/?q=area&near={0}&radius=5&output=embed", address);
    }