标签：instance set 判断 oid .property list wav use button
1. 首先继承一个listbox，来获得按住ctrl键时，点击的item
public class ListBoxEx : ListBox
{
public BeatTemplateWave GetAnitem()
{
var obj = this.AnchorItem;
if (obj != null)
{
Type type = obj.GetType();
System.Reflection.PropertyInfo propertyInfo = type.GetProperty("Item", BindingFlags.Instance | BindingFlags.NonPublic);
System.Reflection.PropertyInfo propertyInfo2 = type.GetProperty("Index", BindingFlags.Instance| BindingFlags.NonPublic);
BeatTemplateWave value_Old = (BeatTemplateWave)propertyInfo.GetValue(obj, null); //获取属性值
return value_Old;
}
else
{
return null;
}
}
//重写选中 public void Setlist(List<BeatTemplateWave> list) { this.SetSelectedItems(list); }
}
2 在listbox 的调用处： 获得listbox 的选中项：SelectedItemsList
3 在mouseleftdown事件里面添加处理程序
private void MouseLeftButtonUpHandler(ElementMouseButtonEventMerge embem)
{
ListBoxEx listbox = (embem.Sender as ListBoxEx);
if (Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl))
{
List<BeatTemplateWave> selectlist = new List<BeatTemplateWave>();
var obj = (embem.Sender as ListBoxNoWheelEx).GetAnitem();
if (SelectedItemsList != null)
{
var templist = SelectedItemsList.IListToCollection<BeatTemplateWave>();
if (obj != null)
{
//判断鼠标点击的项在不在选中的里面，如果不在，则加入临时集合，如果在选中项里面，则不加入临时集合，
if (templist.Any(p => p.R == obj.R))
{
foreach (BeatTemplateWave a in templist)
{
if (a.R == obj.R)
{
}
else
{
selectlist.Add(a);
}
}
}
else
{
selectlist.Add(obj);
selectlist.AddRange(templist);
}
}
else
{
selectlist.AddRange(templist);
}
listbox.Setlist(selectlist); //重新选中
SelectedItemsList = selectlist;//将临时集合赋值给选中项 重写选中
}
return;
}
else
{
if (listbox.SelectedItems != null)
{
SelectedItemsList = listbox.SelectedItems;
var item = SelectedItemsList;
if (item.Count == 0)
return;
}
}
}
标签：instance set 判断 oid .property list wav use button
原文地址：https://www.cnblogs.com/gisbeginner/p/10096906.html
