How to store tamil language in SQL using windows form Application

private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                cn.Open();
                SqlCommand cmd = new SqlCommand("INSERT INTO Sample(Value) VALUES (@NAME)", cn);
                cmd.Parameters.AddWithValue("Name",textBox1.Text);
                cmd.ExecuteNonQuery();
                MessageBox.Show("Success");
                cn.Close();

            }
            catch
            {
                MessageBox.Show("Error");
            }
        }


        private void button2_Click(object sender, EventArgs e)
        {
            try
            {
                cn.Open();
                da = new SqlDataAdapter("Select * from Sample", cn);
                ds = new DataSet();
                da.Fill(ds);
                dataGridView1.DataSource = ds.Tables[0];
                cn.Close();
            }

            catch
            {
                MessageBox.Show("Error");
            }
        }