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<script>

function public_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 = 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);
}
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);
         }
}
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);
         }
}

//觸發(fā)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>

后臺在Page_Load事件中加入:this.TreeView1.Attributes.Add("onclick", "CheckEvent()");

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