请教一个关于astreeview的使用问题

2012-01-09 11:48:08 226 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

谈谈SAP顾问的几个发展趋势大家新年好，今天想聊一下对SAP顾问发展趋势的一些个人见解。过去10多年得益于我国的经济发展，外资不断加大在中国的投资和中国企业的发展，SAP顾问行业得到了很大的发展和壮大。那么未来几年SAP顾问的职业发展到底怎么样呢？阅读详情

前端
<ct:ASTreeView ID="astvMyTree" runat="server" AdditionalAddRequestParameters="{'t2':'ajaxAdd'}"
AdditionalLoadNodesRequestParameters="{'t1':'ajaxLoad'}"
BasePath="~/Javascript/astreeview/" DataTableRootNodeValue="-1"
EnableAjaxOnEditDelete="true"
EnableCheckbox="true" EnableContextMenu="true" EnableCustomizedNodeIcon="false"
EnableDebugMode="false" EnableDragDrop="false" EnableNodeIcon="true" EnableNodeSelection="true"
EnableRoot="false" EnableTreeLines="true" LoadNodesProvider="~/Default.aspx" AutoPostBack="True" />

后台代码

private void AddTree() //添加根节点
{
string para = "0";

List<T_Sys_Organizations> tso = new List<T_Sys_Organizations>();

tso = OrganManagerDao.SelectOrganizationsParentID3(para);

DataTable dt = ListToDataTable(tso); ;

ASTreeViewNode root = this.astvMyTree.RootNode;

foreach (DataRow dr in dt.Rows)
{
string productName = dr["ORG_Name"].ToString();
string productId = dr["ORG_ID"].ToString();
string parentId = dr["ORG_ParentID"].ToString();
int childNodesCount = int.Parse(dr["ORG_Count"].ToString());

ASTreeViewLinkNode node = new ASTreeViewLinkNode(productName, productId);
node.VirtualNodesCount = childNodesCount;
node.VirtualParentKey = productId;
node.IsVirtualNode = childNodesCount > 0;
node.NavigateUrl = "#";
//List<KeyValuePair<string, string>> attrs = new List<KeyValuePair<string, string>>();
node.AddtionalAttributes.Add(new KeyValuePair<string, string>("onclick", "return false;"));
//node.AddtionalAttributes = attrs;

root.AppendChild(node);
}
}

protected override void Render(HtmlTextWriter writer) //添加子节点
{
if (Request.QueryString["t1"] == "ajaxLoad")
{
string virtualParentKey = Request.QueryString["virtualParentKey"];

string para = "0";// "= 1";
if (virtualParentKey == null)
para = "0";
else
para = virtualParentKey;

List<T_Sys_Organizations> tso = new List<T_Sys_Organizations>();

tso = OrganManagerDao.SelectOrganizationsParentID4(para);

DataTable dt = ListToDataTable(tso); ;

ASTreeViewNode root = new ASTreeViewNode("root");

foreach (DataRow dr in dt.Rows)
{
string productName = dr["ORG_Name"].ToString();
string productId = dr["ORG_ID"].ToString();
string parentId = dr["ORG_ParentID"].ToString();
int childNodesCount = 0;
if (!string.IsNullOrEmpty(dr["ORG_Count"].ToString()))
childNodesCount = int.Parse(dr["ORG_Count"].ToString());

ASTreeViewLinkNode node = new ASTreeViewLinkNode(productName, productId);
node.VirtualNodesCount = childNodesCount;
node.VirtualParentKey = productId;
node.IsVirtualNode = childNodesCount > 0;
node.NavigateUrl = "#";
node.AddtionalAttributes.Add(new KeyValuePair<string, string>("onclick", "return false;"));

root.AppendChild(node);
}

HtmlGenericControl ulRoot = new HtmlGenericControl("ul");
astvMyTree.TreeViewHelper.ConvertTree(ulRoot, root, false);
foreach (Control c in ulRoot.Controls)
c.RenderControl(writer);
}
else
base.Render(writer);
}

现在的问题是展开根节点的时候只显示这个跟节点下边的子节点数目，不触发Render事件，请教要怎么改
控件是直接从例子上面拷贝过来的，AutoPostBack已经设定为True了

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