private void BILLS_Load(object sender, EventArgs e)
{
bill = new Bilssset(connectionString, sqlcomand, "MED", "bill");
dataGridView1.DataSource = bill.GetDataView();
this.dataGridView1.Width = this.groupBox1.Width - 10;
this.dataGridView1.Height = (Height - this.groupBox1.Height) - 50;
}
private void button4_Click(object sender, EventArgs e)
{
bill = new Bilssset(connectionString, sqlcomand, "MED", "bill");
dataGridView1.DataSource = bill.GetDataView();
}