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1.加图标和事件
上次已经通过DataSimulateTreeLevelField属性控制了树节点的显示，不用看也知道就是给指定列数据前面加个图标的HTML
可以在SimulateTreeHeper类里看到实现方法，不多说了，原理就是循环行累加上图片就可以了，注意图片的ID和样式
/// <summary>
/// 给树赋值
/// </summary>
private void SetValueTree()
{
if (EnableTree)
{
foreach (GridRow row in Rows)
{
//下级行数
string Nextindex = GetNextIndex(row, Rows);
//默认图标
string iconname = "page.png";
//图片ID，点击用，绑定事件
string imgid = ClientID+"_tree_icon_" + row.RowIndex;
//父节点图标
if (Nextindex != "")
{
iconname = "folder.png";
}
//加入图标和ID，注意加过的就不加了
if (row.Values[FindColumn(TreeName).ColumnIndex].ToString().IndexOf(ClientID+"_tree_icon_") < 0)
{
row.Values[FindColumn(TreeName).ColumnIndex] = "<img id=\"" + imgid + "\" src=\"..\\res\\icon\\" + iconname + "\" width=\"16\" height=\"16\" style=\"margin-top:-5px;margin-bottom:-2px;cursor: pointer\"/>" + row.Values[1];
}
}
}
}
/// <summary>
/// 得到下级行号
/// </summary>
/// <param name="row">本节点</param>
/// <param name="Rows">集合</param>
/// <returns>集合以,隔开</returns>
private string GetNextIndex(GridRow row, GridRowCollection Rows)
{
string topindex = "";
int pridindex = FindColumn(TreeDataParentIDField).ColumnIndex;
int idindex = FindColumn(TreeDataIDField).ColumnIndex;
foreach (GridRow gr in Rows)
{
//父ID等于本ID添加到集合
if (gr.Values[pridindex].ToString() != "" && gr.Values[pridindex].ToString() == row.Values[idindex].ToString())
{
topindex += topindex == "" ? gr.RowIndex.ToString() : "," + gr.RowIndex.ToString();
}
}
return topindex;
}
下面就是点击方法，用JQ实现的，从后台输出
/// <summary>
/// 点击事件只给有子集的点击事件
/// </summary>
private void TreeClick()
{
StringBuilder sbx = new StringBuilder();
foreach (GridRow row in Rows)
{
//有下级菜单才绑定事件
string Nextindex = GetNextIndex(row, Rows);
if (Nextindex != "")
{
string imgid = ClientID + "_tree_icon_" + row.RowIndex;
sbx.Append("$(‘#" + imgid + "‘).click(function(){F.customEvent(\"GridTreeClick_" + row.RowIndex + "\");});");
}
}
PageContext.RegisterStartupScript(sbx.ToString());
}
protected void PageManager1_CustomEvent(object sender, CustomEventArgs e)
{
if (e.EventArgument.IndexOf("GridTreeClick_") >= 0)
{
string rowindex = e.EventArgument.ToString().Split(‘_‘)[1];
Grid1.DoTreeClick(rowindex);
}
}
private static string _moveindex;//移除的数据
/// <summary>
/// 移除的数据
/// </summary>
public static string moveindex
{
get { return _moveindex; }
set { _moveindex = value; }
}
可以看到这个参数是static的不会平白消失，FineUI控制属性的Ajax回发是在构造函数里，
/// <summary>
/// 第一次显示数方法
/// </summary>
private void ShowTree()
{
//初始化树
if (EnableTree)
{
List<string> movelist = new List<string>();
//循环行
foreach (GridRow row in Rows)
{
//得到层级
int lub = GetLevelNub(row, Rows);
if (lub != 0)
{
//子集删除
movelist.Add(row.RowIndex.ToString());
}
}
//排序（重要） 从大到小排序,不排序会删除1后造成2变成1
movelist.Sort(delegate(string str1, string str2) { return int.Parse(str2) - int.Parse(str1); });
string MoveRowIndex = "";
foreach (string s in movelist)
{
MoveRowIndex += MoveRowIndex == "" ? s : "," + s;
}
if (MoveRowIndex != null)
{
//放入缓存记录已经消除的行
moveindex = MoveRowIndex;
string js = ""
+ "var store =" + XID + ".getStore();"
+ "var rows = [" + MoveRowIndex + "];"
+ "Ext.Array.each(rows, function (rowIndex, index) {"
+ " store.removeAt(rowIndex);"
+ "});"
//刷新行号，（重要）
+ XID + ".view.refresh();";
PageContext.RegisterStartupScript(js);
}
//绑定树点击事件
TreeClick();
}
}
下面就可以做展开和收起了，再建一个参数记录展开的行号，专业版实例里可以通过属性控制指定列的展开，我控制这个参数可以实现（这个方法没有写只是理论上的...）
private static List<string> _RowCollapsed;//展开集合
/// <summary>
/// 展开集合
/// </summary>
public static List<string> RowCollapsed
{
get { return _RowCollapsed; }
set { _RowCollapsed = value; }
}
其实这里可以留扣了，逻辑说出来也不复杂，就都一次写出来吧
/// <summary>
/// 点击树事件
/// </summary>
/// <param name="treenode">点击的节点（行号）</param>
public void DoTreeClick(string treenode)
{
if (EnableTree)
{
StringBuilder sb = new StringBuilder();
List<string> movelist = null;
if (movelist == null)
{
//集合
if (RowCollapsed == null)
{
RowCollapsed = new List<string>();
}
//每次点击更改集合，移出和新增
if (RowCollapsed.Contains(treenode))
{
RowCollapsed.Remove(treenode);
}
else
{
RowCollapsed.Add(treenode);
}
movelist = new List<string>(moveindex.Split(‘,‘));
}
int PIDindex = FindColumn(TreeDataParentIDField).ColumnIndex;
int IDindex = FindColumn(TreeDataIDField).ColumnIndex;
//得到下级菜单
string nextindex = GetNextIndex(Rows[Convert.ToInt32(treenode)], Rows);
if (nextindex != "")
{
string[] s = nextindex.Split(‘,‘);
for (int i = 0; i < s.Length; i++)
{
GridRow dr = Rows[Convert.ToInt32(s[i])];
string rowindex = dr.RowIndex.ToString();
//收起动作循环子集收起
if (!RowCollapsed.Contains(treenode))
{
movelist.Add(rowindex);
DoNextTreeClick(rowindex, ref movelist, false);
}
//展开循环子集展开
else
{
movelist.Remove(rowindex);
if (RowCollapsed.Contains(rowindex))
{
DoNextTreeClick(rowindex, ref movelist, true);
}
}
}
moveindex = "";
if (movelist.Count >= 2)
{
movelist.Sort(delegate(string str1, string str2) { return int.Parse(str2 == "" ? "0" : str2) - int.Parse(str1 == "" ? "0" : str1); });
}
foreach (string ss in movelist)
{
moveindex += moveindex == "" ? ss : "," + ss;
}
if (moveindex != null)
{
string js = ""
//+"F.ready(function(){"
+ "var store =F(‘" + ClientID + "‘).getStore();"
+ "var rows = [" + moveindex + "];"
+ "Ext.Array.each(rows, function (rowIndex, index) {"
+ " store.removeAt(rowIndex);"
+ "});"
//+ XID + ".f_loadData();"
+ "F(‘" + ClientID + "‘).view.refresh();";
//+ "});";
//sb.Append(js);
sb.Append("F(‘" + ClientID + "‘).f_loadData();");
sb.Append(js);
}
PageContext.RegisterStartupScript(sb.ToString());
}
TreeClick();
}
}
/// <summary>
/// 循环子集
/// </summary>
/// <param name="treeindex"></param>
/// <param name="movelist"></param>
private void DoNextTreeClick(string treeindex, ref List<string> movelist, bool Collapsed)
{
if (EnableTree)
{
StringBuilder sb = new StringBuilder();
int PIDindex = FindColumn(TreeDataParentIDField).ColumnIndex;
int IDindex = FindColumn(TreeDataIDField).ColumnIndex;
//得到下一菜单
string nextindex = GetNextIndex(Rows[Convert.ToInt32(treeindex)], Rows);
if (nextindex != "")
{
string[] s = nextindex.Split(‘,‘);
for (int i = 0; i < s.Length; i++)
{
GridRow dr = Rows[Convert.ToInt32(s[i])];
string rowindex = dr.RowIndex.ToString();
//展开
if (movelist.Contains(rowindex) && Collapsed)
{
movelist.Remove(rowindex);
}
//收起
if (!Collapsed && !movelist.Contains(rowindex))
{
movelist.Add(rowindex);
}
//展开子集在展开集合中则执行该子集的展开
if (Collapsed && RowCollapsed.Contains(rowindex))
{
DoNextTreeClick(rowindex, ref movelist, true);
}
}
}
}
}
就是点击展开子集，这里判断子集已经展开就继续展开子集，收起要收起该子集的所有子集，主要是参数逻辑的计算。至此功能全部实现
下面应该写图标的展开和收起的改变，全部的前台实现，及其他编辑选择锁定列的测试和修改
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原文地址：http://www.cnblogs.com/shiworkyue/p/4217999.html
