Treeview 选择实现操作代码,Asp.Net代码库,德仔网

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【Asp.Net】 Treeview 选择实现操作
作者:CSDN / 发布于2012/1/11/ 853
<div><span style="color: rgb(0,0,255)">#region</span><span style="color: rgb(0,0,0)"> Treeview 选择实现</span><span style="color: rgb(0,0,0)">
 </span><span style="color: rgb(0,0,255)">public</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">static</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">class</span><span style="color: rgb(0,0,0)"> TreeViewCheck
 {
 </span><span style="color: rgb(128,128,128)">///</span><span style="color: rgb(0,128,0)"> </span><span style="color: rgb(128,128,128)"><summary></span><span style="color: rgb(0,128,0)">
 </span><span style="color: rgb(128,128,128)">///</span><span style="color: rgb(0,128,0)"> 系列节点 Checked 属性控制
 </span><span style="color: rgb(128,128,128)">///</span><span style="color: rgb(0,128,0)"> </span><span style="color: rgb(128,128,128)"></summary></span><span style="color: rgb(0,128,0)">
 </span><span style="color: rgb(128,128,128)">///</span><span style="color: rgb(0,128,0)"> </span><span style="color: rgb(128,128,128)"><param name="e"></param></span><span style="color: rgb(128,128,128)">
</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">public</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">static</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">void</span><span style="color: rgb(0,0,0)"> CheckControl(TreeViewEventArgs e, TreeNodeCollection tv)
 {
 </span><span style="color: rgb(0,0,255)">if</span><span style="color: rgb(0,0,0)"> (e.Action </span><span style="color: rgb(0,0,0)">!=</span><span style="color: rgb(0,0,0)"> TreeViewAction.Unknown)
 {
 </span><span style="color: rgb(0,0,255)">if</span><span style="color: rgb(0,0,0)"> (e.Node </span><span style="color: rgb(0,0,0)">!=</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">null</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,0)">&&</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,0)">!</span><span style="color: rgb(0,0,0)">Convert.IsDBNull(e.Node))
 {
 CheckParentNode(e.Node);

 </span><span style="color: rgb(0,0,255)">if</span><span style="color: rgb(0,0,0)"> (e.Node.Nodes.Count </span><span style="color: rgb(0,0,0)">></span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(128,0,128)">0</span><span style="color: rgb(0,0,0)">)
 {
 CheckAllChildNodes(e.Node, e.Node.Checked);

 }
 }
 }
 }

 </span><span style="color: rgb(0,0,255)">#region</span><span style="color: rgb(0,0,0)"> 私有方法</span><span style="color: rgb(0,0,0)">

 </span><span style="color: rgb(0,128,0)">//</span><span style="color: rgb(0,128,0)">改变所有子节点的状态</span><span style="color: rgb(0,128,0)">
</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">public</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">static</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">void</span><span style="color: rgb(0,0,0)"> CheckAllChildNodes(TreeNode pn, </span><span style="color: rgb(0,0,255)">bool</span><span style="color: rgb(0,0,0)"> IsChecked)
 {
 </span><span style="color: rgb(0,0,255)">foreach</span><span style="color: rgb(0,0,0)"> (TreeNode tn </span><span style="color: rgb(0,0,255)">in</span><span style="color: rgb(0,0,0)"> pn.Nodes)
 {
 tn.Checked </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> IsChecked;

 </span><span style="color: rgb(0,0,255)">if</span><span style="color: rgb(0,0,0)"> (tn.Nodes.Count </span><span style="color: rgb(0,0,0)">></span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(128,0,128)">0</span><span style="color: rgb(0,0,0)">)
 {
 CheckAllChildNodes(tn, IsChecked);
 }
 }
 }

 </span><span style="color: rgb(0,128,0)">//</span><span style="color: rgb(0,128,0)">改变父节点的选中状态，此处为所有子节点不选中时才取消父节点选中，可以根据需要修改</span><span style="color: rgb(0,128,0)">
</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">public</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">static</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">void</span><span style="color: rgb(0,0,0)"> CheckParentNode(TreeNode curNode)
 {
 </span><span style="color: rgb(0,0,255)">bool</span><span style="color: rgb(0,0,0)"> bChecked </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">false</span><span style="color: rgb(0,0,0)">;

 </span><span style="color: rgb(0,0,255)">if</span><span style="color: rgb(0,0,0)"> (curNode.Parent </span><span style="color: rgb(0,0,0)">!=</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">null</span><span style="color: rgb(0,0,0)">)
 {
 </span><span style="color: rgb(0,0,255)">foreach</span><span style="color: rgb(0,0,0)"> (TreeNode node </span><span style="color: rgb(0,0,255)">in</span><span style="color: rgb(0,0,0)"> curNode.Parent.Nodes)
 {
 </span><span style="color: rgb(0,0,255)">if</span><span style="color: rgb(0,0,0)"> (node.Checked)
 {
 bChecked </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">true</span><span style="color: rgb(0,0,0)">;

 </span><span style="color: rgb(0,0,255)">break</span><span style="color: rgb(0,0,0)">;
 }
 }

 </span><span style="color: rgb(0,0,255)">if</span><span style="color: rgb(0,0,0)"> (bChecked)
 {
 curNode.Parent.Checked </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">true</span><span style="color: rgb(0,0,0)">;
 CheckParentNode(curNode.Parent);
 }
 </span><span style="color: rgb(0,0,255)">else</span><span style="color: rgb(0,0,0)">
 {
 curNode.Parent.Checked </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">false</span><span style="color: rgb(0,0,0)">;
 CheckParentNode(curNode.Parent);
 }
 }
 }

 </span><span style="color: rgb(0,0,255)">#endregion</span><span style="color: rgb(0,0,0)">
 }
 </span><span style="color: rgb(0,0,255)">#endregion</span><span style="color: rgb(0,0,0)"> Treeview 选择实现</span><span style="color: rgb(0,0,0)">

</span><span style="color: rgb(0,128,0)">//</span><span style="color: rgb(0,128,0)">TreeView节点连载</span><span style="color: rgb(0,128,0)">
</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">private</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">void</span><span style="color: rgb(0,0,0)"> tv_RightList_AfterCheck(</span><span style="color: rgb(0,0,255)">object</span><span style="color: rgb(0,0,0)"> sender, TreeViewEventArgs e)
 {
 TreeViewCheck.CheckControl(e, tv_selectItem.Nodes);
 }
</span></div>
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