protected void Button1_Click(object sender, EventArgs e)
{
StudentEntites.FName = TextBox1.Text;
StudentEntites.LName = TextBox2.Text;
StudentEntites.Age = Convert.ToInt32(TextBox3.Text);
StudentEntites.Sex = TextBox4.Text;
var res = StudentBusinessLogic.StudentEntry(StudentEntites);
TextBox1.Text = TextBox2.Text = TextBox3.Text = TextBox4.Text = "";
RefreshData();
}