private void searchButton_Click(object sender, EventArgs e)
{
customers.Name = nameTextBox.Text;
customers.Address = addressTextBox.Text;
customers.Contact = contactTextBox.Text;
if (nameTextBox.Text == "" && addressTextBox.Text == "" && contactTextBox.Text == "")
{
MessageBox.Show("Please fillup any field for searching required value..");
return;
}
showDataGridView.DataSource = "";
showDataGridView.DataSource = _customerManager.Search(customers);
return;
}