private void btnDsave_Click(object sender, EventArgs e)
{
EdgesCollection EC = map.Edge.Edges;
Edge edge = new Edge();
double svalue = double.Parse(txtDistance.Text);;
if (EdgeSearch(txtDstart.Text, txtDend.Text, EC, edge))
{
edge.Svalue = svalue;
}
else
{
if (SearchNode(txtDstart.Text) != null && SearchNode(txtDend.Text) != null)
{
edge = new Edge(SearchNode(txtDstart.Text), SearchNode(txtDend.Text));
edge.Svalue = svalue;
EC.Add(edge);
}
}
}
