我从上面的命名空间派生了一个控件来合并一个对象标签，因为上面似乎没有这个。
在我的代码中，我填充树控件并设置选择项。但是没有事件被解雇......
<PulmanGroup:PulmanTreeControl ID="FileContentsTreeView" runat="server" EnableTheming="True" CssClass="AspNet-TreeView" display="block" right="400px" ImageSet="Simple" NodeIndent="30" ShowLines="True" ViewStateMode="Enabled" onselectednodechanged="FileContentsTreeView_SelectedNodeChanged" PopulateNodesFromClient="False"> <HoverNodeStyle Font-Underline="True" runat="server"/>
<LeafNodeStyle CssClass=".AspNet-TreeView-Leaf" runat="server"/><NodeStyle Font-Names="Verdana" Font-Size="8pt" ForeColor="Black" NodeSpacing="0px" VerticalPadding="0px" runat="server"/> <ParentNodeStyle Font-Bold="False" CssClass="AspNet-TreeView-Parent" runat="server"/><RootNodeStyle CssClass="AspNet-TreeView-Root " runat="server"/><SelectedNodeStyle Font-Underline="True" VerticalPadding="0px" CssClass="SelectedStyle" Height="20px" runat="server" /></PulmanGroup:PulmanTreeControl>
我尝试使用“PopulateNodesFromClient”确保回发为false。 我还使用下面的代码在每个节点上实际设置了select操作。
protected void FileContentsTreeView_Load(object sender, EventArgs e)
{
if(File_Hash.type==0)
throw new Exception("Something's wrong");
PulmanTreeNode rnode = new PulmanTreeNode();
rnode.Text = File_Hash.text; //Sets the root......
FileContentsTreeView.Nodes.Add(rnode);
rnode.NavigateUrl = "";
rnode.SelectAction = TreeNodeSelectAction.Select;
foreach(BudgetObject bd in ((BudgetObjectContainer)File_Hash).BusinessObjects)
{
PulmanTreeNode pnode = new PulmanTreeNode();
rnode.ChildNodes.Add(pnode);
pnode.Tag = bd;
pnode.Text = bd.text;
pnode.SelectAction = TreeNodeSelectAction.Select;
pnode.NavigateUrl = "";
if (bd.type ==2 || bd.type == 3 ) // Is a parent.
FileContentsRecursiveTreeView_Load(sender, e, pnode, ((BudgetObjectContainer)bd));
}
FileContentsTreeView.CollapseAll();
}
protected void FileContentsRecursiveTreeView_Load(object sender, EventArgs e, TreeNode TreeContainer, BudgetObjectContainer boc)
{
foreach (BudgetObject bd in boc.BusinessObjects)
{
PulmanTreeNode pnode = new PulmanTreeNode();
pnode.Expanded = false;
pnode.Text = bd.text;
pnode.Tag = bd;
pnode.SelectAction = TreeNodeSelectAction.Select;
pnode.NavigateUrl = "";
TreeContainer.ChildNodes.Add(pnode);
if (bd.type == 2 || bd.type == 3) // Is a parent.
FileContentsRecursiveTreeView_Load(sender, e, pnode, ((BudgetObjectContainer)bd));
}
}
protected void FileContentsTreeView_SelectedNodeChanged(object sender, EventArgs e)
{
PulmanTreeNode node = (PulmanTreeNode)FileContentsTreeView.SelectedNode;
BudgetObject bo = (BudgetObject)node.Tag;
StatusLabel.Text = bo.text + " " + node.Text;
return;
}
但是，我似乎无法让事件发生。我的自定义控件使用视图状态，当我点击一个项目时重新填充，所以我知道回发和视图状态正在发生，我确保navigateURL是空的，但即使发出这行代码，事件仍然不会触发... < / p>
同样，我还进行了一项测试，其中我使用的是标准树视图，其中节点从设计器中填充，并且没有事件被触发....
非常感谢任何帮助。
- - - - - - - - - - - - - - - - - - 更新
因此，尽管在树控件上没有触发任何事件，但仍会发出回发请求。 我调试了代码，发现所选节点都为空，值为空字符串。尽管如此 - CSS仍然突出了选定的条目....所以发生了一些事情，但我不知道是什么。
根据要求 - 这是CSS，唯一不能用它的部分是hide。然而，这是化妆品，html似乎很好。
我的控件继承的唯一两个成员是：
protected override object SaveViewState()
{
object[] arrState = new object[2];
arrState[1] = base.SaveViewState();
//arrState[0] = this._data;
arrState[0] = this.Tag;
return arrState;
}
protected override void LoadViewState(object state)
{
object[] arrState = state as object[];
//this._data = ((BudgetObject)arrState[0]);
this.Tag = arrState[0];
base.LoadViewState(arrState[1]);
}
生成的html如下所示：
<li class="AspNet-TreeView-Parent">
<span class="AspNet-TreeView-Expand" onclick="ExpandCollapse__AspNetTreeView(this)"> </span>
<a href="javascript:__doPostBack('ctl00$Content$FileContentsTreeView','sRoot\\NEW RETAIL\\ Gross Profit')">
Gross Profit</a>
<ul class="AspNet-TreeView-Hide">
<li class="AspNet-TreeView-Leaf">
<a href="javascript:__doPostBack('ctl00$Content$FileContentsTreeView','sRoot\\NEW RETAIL\\ Gross Profit\\ Retail')">
Retail</a>
</li>
<li class="AspNet-TreeView-Leaf">
<a href="javascript:__doPostBack('ctl00$Content$FileContentsTreeView','sRoot\\NEW RETAIL\\ Gross Profit\\ Dealer Installed Accessories')">
Dealer Installed Accessories</a>
</li>
<li class="AspNet-TreeView-Leaf">
<a href="javascript:__doPostBack('ctl00$Content$FileContentsTreeView','sRoot\\NEW RETAIL\\ Gross Profit\\ Delivery')">
Delivery</a>
</li>
<li class="AspNet-TreeView-Leaf">
<a href="javascript:__doPostBack('ctl00$Content$FileContentsTreeView','sRoot\\NEW RETAIL\\ Gross Profit\\ F&&I Commission')">
F&&I Commission</a>
</li>
<li class="AspNet-TreeView-Leaf">
<a href="javascript:__doPostBack('ctl00$Content$FileContentsTreeView','sRoot\\NEW RETAIL\\ Gross Profit\\ Finance Volume Bonus')">
Finance Volume Bonus</a>
</li>
<li class="AspNet-TreeView-Leaf">
<a href="javascript:__doPostBack('ctl00$Content$FileContentsTreeView','sRoot\\NEW RETAIL\\ Gross Profit\\ Retail Sales Bonus')">
Retail Sales Bonus</a>
</li>
<li class="AspNet-TreeView-Leaf">
<a href="javascript:__doPostBack('ctl00$Content$FileContentsTreeView','sRoot\\NEW RETAIL\\ Gross Profit\\ Other Income')">
Other Income</a>
</li>
<li class="AspNet-TreeView-Leaf">
<a href="javascript:__doPostBack('ctl00$Content$FileContentsTreeView','sRoot\\NEW RETAIL\\ Gross Profit\\ Total New Gross Profit')">
Total New Gross Profit</a>
</li>
</ul>