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1. 选中所有子节点:
function OnTreeNodeChecked() 
        {
            var ele 
= window.event.srcElement; 
            
if(ele.type=='checkbox'
            { 
                var childrenDivID 
= ele.id.replace('CheckBox','Nodes'); 
                var div 
= document.getElementById(childrenDivID); 
                
if(div==null)return
                var checkBoxs 
= div.getElementsByTagName('INPUT'); 
                
for(var i=0;i<checkBoxs.length;i++
                { 
                    
if(checkBoxs[i].type=='checkbox'
                        checkBoxs[i].
checked=ele.checked
                } 
            } 
        } 
 
 
2. 如果要选中子节点又同时选中所有父节点:
   function getParentByTagName(element,tagName)
        {
            var    parent 
= element.parentNode;
            var    upperTagName 
= tagName.toUpperCase();
            
while (parent && (parent.tagName.toUpperCase() != upperTagName))
            {
                parent 
= parent.parentNode ? parent.parentNode : parent.parentElement;
            }
            
return parent;
        }

        function setParentChecked(objNode)
        {
            var    objParentDiv 
= getParentByTagName(objNode,"div");
            
if(objParentDiv == null || objParentDiv == "undefined")
                
return;
            var    objID 
=    objParentDiv.getAttribute("ID");
            var    objParentCheckBox 
=    document.getElementById(objID.replace("Nodes","CheckBox"));
            
if(objParentCheckBox == null || objParentCheckBox    == "undefined")
                
return;
            
if(objParentCheckBox.tagName!="INPUT" && objParentCheckBox.type    == "checkbox")
                
return;
            objParentCheckBox.
checked =    true;
            setParentChecked(objParentCheckBox);
        }


        function setChildCheckedState(div,state)
        {
            var    objchild 
= div.childNodes;
            var    count 
=    objchild.length;
            
for(var    i=0;i<objchild.length;i++)
            {
                var    tempObj    
= objchild[i];
                
if(tempObj.tagName=="INPUT"    && tempObj.type    == "checkbox")
                {
                    tempObj.
checked    = state;
                }
                setChildCheckedState(tempObj,state);
            }
        }
        function TreeNodeChecked()
        {
            var    objNode    
= window.event.srcElement;
            
if(objNode.tagName!="INPUT"    || objNode.type!="checkbox")
                
return;
            
            
if(objNode.checked == true)
            {
                setParentChecked(objNode);
            }
            var    objID 
=    objNode.getAttribute("ID");
            var    objParentDiv 
= document.getElementById(objID.replace("CheckBox","Nodes"));
            
if(objParentDiv==null || typeof(objParentDiv) == "undefined")
                
return;
            setChildCheckedState(objParentDiv,objNode.
checked);

        }
  后台的给treeview添加onclick事件处理:
  m_Tree.Attributes.Add(
"onclick""TreeNodeChecked();");

3.每次只选中一个节点,相对与互斥,这个很好实现
function TreeNodeChecked()
{
  var objNode 
= window.event.srcElement;
  
if(objNode.tagName!="INPUT" || objNode.type !="checkbox")
  
return;
  
if(window.lastCheckNode != null)
  window.lastCheckNode.
checked = false;
  window.lastCheckNode 
= objNode;
}

另一种:
所用的javascript代码:


<script type="text/javascript">
    function public_GetParentByTagName(element, tagName) 
     { 
        var parent 
= element.parentNode; 
        var upperTagName 
= tagName.toUpperCase(); 
        
//如果这个元素还不是想要的tag就继续上溯 
        while (parent && (parent.tagName.toUpperCase() != upperTagName)) 
        { 
            parent 
= parent.parentNode ? parent.parentNode : parent.parentElement; 
        } 
        
return parent; 
    }

    
//设置节点的父节点Cheched——该节点可访问,则他的父节点也必能访问 
    function setParentChecked(objNode) 
    { 
        var objParentDiv 
= public_GetParentByTagName(objNode,"div"); 
        
if(objParentDiv==null || objParentDiv == "undefined"
        { 
            
return
        } 
        var objID 
= objParentDiv.getAttribute("ID"); 
        objID 
= objID.substring(0,objID.indexOf("Nodes")); 
        objID 
= objID+"CheckBox"
        var objParentCheckBox 
= document.getElementById(objID); 
        
if(objParentCheckBox==null || objParentCheckBox == "undefined"
        { 
            
return
        } 
        
if(objParentCheckBox.tagName!="INPUT" && objParentCheckBox.type == "checkbox"
        
return
        objParentCheckBox.
checked = true
        setParentChecked(objParentCheckBox); 
    }

    
//设置节点的子节点uncheched——该节点不可访问,则他的子节点也不能访问 
    function setChildUnChecked(divID) 
    { 
        var objchild 
= divID.children; 
        var count 
= objchild.length; 
        
for(var i=0;i <objchild.length;i++
        { 
            var tempObj 
= objchild[i]; 
            
if(tempObj.tagName=="INPUT" && tempObj.type == "checkbox"
            { 
                tempObj.
checked = false
            } 
            setChildUnChecked(tempObj); 
        } 
    }

   
//设置节点的子节点cheched——该节点可以访问,则他的子节点也都能访问 
    function setChildChecked(divID) 
    { 
        var objchild 
= divID.children; 
        var count 
= objchild.length; 
        
for(var i=0;i <objchild.length;i++
        { 
            var tempObj 
= objchild[i]; 
            
if(tempObj.tagName=="INPUT" && tempObj.type == "checkbox"
            { 
                tempObj.
checked = true
            } 
            setChildChecked(tempObj); 
        } 
    }

    
//触发事件 
    function CheckEvent() 
    {
        var objNode 
= event.srcElement;

        
if(objNode.tagName!="INPUT" || objNode.type!="checkbox"
        
return;

        
if(objNode.checked==true
        { 
            setParentChecked(objNode); 
            var objID 
= objNode.getAttribute("ID"); 
            var objID 
= objID.substring(0,objID.indexOf("CheckBox")); 
            var objParentDiv 
= document.getElementById(objID+"Nodes"); 
            
if(objParentDiv==null || objParentDiv == "undefined"
            { 
                
return
            } 
            setChildChecked(objParentDiv); 
        } 
        
else 
        { 
            var objID 
= objNode.getAttribute("ID"); 
            var objID 
= objID.substring(0,objID.indexOf("CheckBox")); 
            var objParentDiv 
= document.getElementById(objID+"Nodes"); 
            
if(objParentDiv==null || objParentDiv == "undefined"
            { 
                
return
            } 
            setChildUnChecked(objParentDiv); 
        } 
    } 
</script>

后台代码:
 
protected void Page_Load(object sender, EventArgs e)
    {
        
        
if (!this.Page.IsPostBack)
        {

            
this.TreeView1.Attributes.Add("onclick""CheckEvent()");          
               
        }
    }
posted on 2009-10-15 10:14  Rich.T  阅读(995)  评论(0编辑  收藏  举报