private void deleteEdgeButton_Click(object sender, EventArgs e)
{
if (listOfEgdes.SelectedIndex >= 0)
{
string selectedEdge = listOfEgdes.SelectedItem.ToString();
listOfEgdes.Items.RemoveAt(listOfEgdes.SelectedIndex);
int index = selectedEdge.IndexOf("<");
string eFrom = selectedEdge.Substring(0, index);
index = selectedEdge.IndexOf(">");
string eTo = selectedEdge.Substring(index + 1);
graph.DeleteEdge(Int32.Parse(eFrom), Int32.Parse(eTo));
}
}
public void UndirectedGraphAddEdgeAndDeleteEdge()
{
Graph graph = new MatrixGraph(10, false);
graph.AddEdge(0, 9, 10);
graph.AddEdge(2, 0, 5);
Assert.Equal(2, graph.GetOutDegree(0));
Assert.Equal(2, graph.GetInDegree(0));
Assert.Equal(2, graph.EdgesCount);
graph.DeleteEdge(0, 9);
Assert.Equal(1, graph.GetOutDegree(0));
Assert.Equal(1, graph.GetInDegree(0));
Assert.Equal(1, graph.EdgesCount);
}