public class CommonTreeView : NotifyPropertyBase

{

// 父

///public CommonTreeView Parent

{

get;

set;

}

// 子

///public ListChildren

{

get;

set;

}

// 节点的名字

///public string NodeName

{

get;

set;

}

public bool? _isChecked;

// CheckBox是否选中

///public bool? IsChecked

{

get

{

return _isChecked;

}

set

{

SetIsChecked(value, true, true);

}

}

public CommonTreeView(string name)

{

this.NodeName=name;

this.Children=new List();

}

public CommonTreeView() { }

private void SetIsChecked(bool? value, bool checkedChildren, bool checkedParent)

{

if (_isChecked == value) return;

_isChecked = value;

//选中和取消子类

if (checkedChildren && value.HasValue && Children != null)

Children.ForEach(ch => ch.SetIsChecked(value, true, false));

//选中和取消父类

if (checkedParent && this.Parent != null)

this.Parent.CheckParentCheckState();

//通知更改

this.SetProperty(x => x.IsChecked);

}

// 检查父类是否选 中

/// 如果父类的子类中有一个和第一个子类的状态不一样父类ischecked为null

///private void CheckParentCheckState()

{

List checkedItems = new List();

string checkedNames = string.Empty;

bool? _currentState = this.IsChecked;

bool? _firstState = null;

for (int i = 0; i

{

bool? childrenState= this.Children[i].IsChecked;if (i==0)

{

_firstState= childrenState;}

else if (_firstState != childrenState){

_firstState= null;}

}

if (_firstState != null)_currentState= _firstState;SetIsChecked(_firstState, false, true);

}

/// /// 创建树

/public void CreateTreeWithChildre( CommonTreeView children,bool? isChecked)

{

this.Children.Add(children);

//必须先把孩子加入再为Parent赋值，

//否则当只有一个子节点时Parent的IsChecked状态会出错

children.Parent = this;

children.IsChecked = isChecked;

}

}