Make rounded corners Button inside ASP.Net GridView using CSS

Hi lingers,

Kindly refer below sample.

Database

I have made use of the following table Customers with the schema as follows.

I have already inserted few records in the table.

You can download the database table SQL by clicking the download link below.

Download SQL file

HTML

<asp:GridView runat="server" ID="gvCustomers" AutoGenerateColumns="false">
    <Columns>
        <asp:BoundField DataField="CustomerId" Headertext="Id"/>
        <asp:BoundField DataField="Name" Headertext="Name"/>
        <asp:BoundField DataField="Country" Headertext="Country"/>
        <asp:TemplateField>
            <ItemTemplate>
                <asp:Button runat="server" ID="txtButton" Text="Button" Style="border-radius: 15px"></asp:Button>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

Namespaces

C#

using System.Data;
using System.Data.SqlClient;
using System.Configuration;

VB.Net

Imports System.Data
Imports System.Data.SqlClient
Imports System.Configuration

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if(!this.IsPostBack)
    {
        this.BindGrid();
    }
}

private void BindGrid()
{
    string conString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
    using (SqlConnection con = new SqlConnection(conString))
    {
        using (SqlCommand cmd = new SqlCommand("SELECT Name, CustomerId, Country From Customers", con))
        {
            using (SqlDataAdapter sda = new SqlDataAdapter(cmd))
            {
                using (DataTable dt = new DataTable())
                {
                    sda.Fill(dt);
                    gvCustomers.DataSource = dt;
                    gvCustomers.DataBind();
                }
            }
        }
    }
}

VB.Net

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
        If Not Me.IsPostBack Then
            Me.BindGrid()
        End If
    End Sub

    Private Sub BindGrid()
        Dim conString As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString
        Using con As SqlConnection = New SqlConnection(conString)
            Using cmd As SqlCommand = New SqlCommand("SELECT Name, CustomerId, Country From Customers", con)
                Using sda As SqlDataAdapter = New SqlDataAdapter(cmd)
                    Using dt As DataTable = New DataTable()
                        sda.Fill(dt)
                        gvCustomers.DataSource = dt
                        gvCustomers.DataBind()
                    End Using
                End Using
            End Using
        End Using
    End Sub

Screenshot