private void listViewAttributeCardinality_SelectedIndexChanged(object sender, EventArgs e)
{
this.buttonAttributeAggregationRemove.Enabled = (this.listViewAttributeCardinality.Items.Count > 1);
DocAttribute docAttr = this.GetAttributeAggregation();
this.m_loadagg = true;
this.comboBoxAttributeAggregation.SelectedIndex = docAttr.AggregationType;
this.textBoxAttributeAggregationMin.Text = docAttr.AggregationLower;
this.textBoxAttributeAggregationMax.Text = docAttr.AggregationUpper;
this.m_loadagg = false;
}