Asp.net_控件TreeView的使用

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1. <script language="javascript" type="text/javascript"> 
2.  
3.         function postBackObject() 
4.         {    
5.             var o = window.event.srcElement; 
6.             if (o.tagName == "INPUT" && o.type == "checkbox")//点击treeview的checkbox是触发 
7.             { 
8.                var d=o.id;//获得当前checkbox的id; 
9.                var e= d.replace("CheckBox","Nodes");//通过查看脚本信息,获得包含所有子节点div的id 
10.                var div= window.document.getElementById(e);//获得div对象 
11.               if(div!=null) //如果不为空则表示,存在自节点 
12.               { 
13.                    var check=div.getElementsByTagName("INPUT");//获得div中所有的已input开始的标记 
14.                    for(i=0;i<check.length;i++)     
15.                    { 
16.                         if(check[i].type=="checkbox")//如果是checkbox 
17.                         { 
18.                           check[i].checked=o.checked;//字节点的状态和父节点的状态相同,即达到全选 
19.                         } 
20.                    } 
21.               } 
22.               else  //点子节点的时候,使父节点的状态改变,即不为全选 
23.               { 
24.                   var divid=o.parentElement.parentElement.parentElement.parentElement.parentElement;//子节点所在的div 
25.                   var id= divid.id.replace("Nodes","CheckBox");//获得根节点的id 
26.                   var checkbox=divid.getElementsByTagName("INPUT");//获取所有子节点数 
27.                   var s=0; 
28.                   for(i=0;i<checkbox.length;i++)     
29.                    { 
30.                       if(checkbox[i].checked) //判断有多少子节点被选中 
31.                       { 
32.                          s++;    
33.                       } 
34.                    } 
35.            
36.                 if(s==checkbox.length) //如果全部选中 或者 选择的是另外一个根节点的子节点 ， 
37.                 {                               //    则开始的根节点的状态仍然为选中状态 
38.                  window.document.getElementById(id).checked=true; 
39.                 } 
40.                 else 
41.                 {                               //否则为没选中状态 
42.                  window.document.getElementById(id).checked=false; 
43.                 } 
44.               }    
45.             } 
46.         } 
47. </script> 

    <script language="javascript" type="text/javascript">                function postBackObject()            {                   var o = window.event.srcElement;                if (o.tagName == "INPUT" && o.type == "checkbox") //点击treeview的checkbox是触发                {                   var d=o.id;//获得当前checkbox的id;                   var e= d.replace("CheckBox","Nodes");//通过查看脚本信息,获得包含所有子节点div的id                   var div= window.document.getElementById(e);//获得div对象                  if(div!=null)  //如果不为空则表示,存在自节点                  {                       var check=div.getElementsByTagName("INPUT");//获得div中所有的已input开始的标记                       for(i=0;i<check.length;i++)                           {                            if(check[i].type=="checkbox") //如果是checkbox                            {                              check[i].checked=o.checked;//字节点的状态和父节点的状态相同,即达到全选                            }                       }                  }                  else  //点子节点的时候,使父节点的状态改变,即不为全选                  {                      var divid=o.parentElement.parentElement.parentElement.parentElement.parentElement; //子节点所在的div                      var id= divid.id.replace("Nodes","CheckBox"); //获得根节点的id                      var checkbox=divid.getElementsByTagName("INPUT"); //获取所有子节点数                      var s=0;                      for(i=0;i<checkbox.length;i++)                           {                          if(checkbox[i].checked)  //判断有多少子节点被选中                          {                             s++;                             }                       }                                  if(s==checkbox.length)  //如果全部选中 或者 选择的是另外一个根节点的子节点 ，                    {                               //    则开始的根节点的状态仍然为选中状态                     window.document.getElementById(id).checked=true;                    }                    else                    {                               //否则为没选中状态                     window.document.getElementById(id).checked=false;                    }                  }                   }            }    </script>

[csharp] view plaincopyprint?

1. <asp:TreeView ID="tvData" runat="server" ShowCheckBoxes="All" ExpandDepth="0" ShowLines="True" 
2.                         onclick="postBackObject()" OnSelectedNodeChanged="tvData_SelectedNodeChanged"> 
3.                     </asp:TreeView> 

<asp:TreeView ID="tvData" runat="server" ShowCheckBoxes="All" ExpandDepth="0" ShowLines="True"                        onclick="postBackObject()" OnSelectedNodeChanged="tvData_SelectedNodeChanged">                    </asp:TreeView>

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1. <pre class="csharp" name="code"><span style="white-space: pre;">    </span>//页面初始化</pre><pre class="csharp" name="code"><span style="white-space: pre;">    </span>tvData.Nodes.Clear();</pre><pre class="csharp" name="code"><span style="white-space: pre;">  </span>TreeNode tn1 = new TreeNode("1级", "1级"); 
2.         TreeNode tn2 = new TreeNode("1级","1级"); 
3.         tvData.Nodes.Add(tn1); 
4.         tvData.Nodes.Add(tn2);</pre><pre class="csharp" name="code"><span style="white-space: pre;">    </span>TreeNode tn21 = new TreeNode("2级","2级"); 
5.         TreeNode tn22 = new TreeNode("2级","2级");</pre><span style="white-space: pre;"> tvData.Nodes[0].ChildNodes.Add(tn</span>21<span style="white-space: pre;">);</span><br> 
6. <span style="white-space: pre;">tvData.Nodes[</span>1<span style="white-space: pre;">].ChildNodes.Add(tn</span>22<span style="white-space: pre;">);</span><br> 
7. <span style="white-space: pre;">tn</span>1<span style="white-space: pre;">.Expanded =true;</span>//展开 
8. <pre></pre> 
9. <pre class="csharp" name="code"><preclass="html" name="code">//动态加载</pre> protected void tvData_SelectedNodeChanged(object sender, EventArgs e) { if (tvData.SelectedNode.ChildNodes.Count == 0) { //填充 if (tvData.SelectedNode.Depth == 1) { if (tvData.SelectedNode.Parent == tvData.Nodes[0]) { <pre class="csharp" name="code"> <span style="white-space: pre;">           </span>TreeNode tn1=new TreeNode("3级","3级"); 
10.                         tvData.SelectedNode.ChildNodes.Add(tn1); 
11.                         if (tvData.SelectedNode.Checked ==true) 
12.                         { 
13.                             tn1.Checked = true; 
14.                         }</pre> } if (tvData.SelectedNode.Parent 
15. == tvData.Nodes[1]) { TreeNode tn1=new TreeNode("3级","3级"); tvData.SelectedNode.ChildNodes.Add(tn1);if (tvData.SelectedNode.Checked == true) { tn1.Checked = true; } } } } } 
16. <pre></pre> 
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21. </pre>