private void LoadData()
{
ServiceReference1.Service1Client client = new ServiceReference1.Service1Client();
dataGridView1.DataSource = client.GetBoetes();
}
private void buttonVoegToe_Click(object sender, System.EventArgs e)
{
ServiceReference1.Service1Client client = new ServiceReference1.Service1Client();
client.AddBoete(int.Parse(textBoxBetalingsnr.Text), int.Parse(textBoxSpelersnr.Text), dateTimePickerDatum.Value, decimal.Parse(textBoxBedrag.Text));
LoadData();
}