public void DelStartNode(StartNodeControl con)
{
this.WorkflowProcessCurrent.StartNode = null;
UserControls.Remove(con.Id);
canvas.Children.Remove(con);
foreach (var item in con.StartNode.LeavingTransitions)
{
item.FromNode = null;
}
foreach (var item in con.StartNode.EnteringLoops)
{
item.ToNode = null;
}
}
private void StartNodeButtonDown(object sender, MouseButtonEventArgs e)
{
//开始节点
if (this.WorkflowProcessCurrent.StartNode == null)
{
StartNodeControl snc = new StartNodeControl(this, null, false);
snc.InitNode();
if (!canvas.Children.Contains(snc))
{
snc.LoadNode();
//设置位置
Point p = e.GetPosition(canvas);
snc.SetPoint((double)(p.X - snc.Bounds.Width / 2), (double)(p.Y - snc.Bounds.Height / 2));
this.AddHandle(snc);
canvas.Children.Add(snc);
this.WorkflowProcessCurrent.StartNode = snc.StartNode;
UserControls.Add(snc.Id, snc);
}
}
else
{
MainPage.Message("提示", "只能有一个开始节点。");
}
listBox.SelectedIndex = 0;
}