开原版好像是没有gird树，有一个扩展列下的模拟树列，就是不能展开，专业版有，开原版我弄了弄，思路是有，就是不是很好实现。这篇博客直接写出了（一）说明一个肯定是写不完的。
/// <summary>
/// 是否启用树
/// </summary>
[Category(CategoryName.OPTIONS)]
[DefaultValue(null)]
[Description("是否启用树")]
public bool EnableTree
{
get
{
object obj = FState["EnableTree"];
return obj == null ? false : (bool)obj;
}
set
{
FState["EnableTree"] = value;
if (value)
{
EnableRowClickEvent = true;
}
}
}
/// <summary>
/// 树节点列名
/// </summary>
[Category(CategoryName.OPTIONS)]
[DefaultValue(null)]
[Description("树节点列名")]
public string TreeName
{
get
{
object obj = FState["TreeName"];
return obj == null ? "" : (string)obj;
}
set
{
FState["TreeName"] = value;
}
}
/// <summary>
/// 主键ID
/// </summary>
[Category(CategoryName.OPTIONS)]
[DefaultValue(null)]
[Description("主键ID")]
public string TreeDataIDField
{
get
{
object obj = FState["TreeDataIDField"];
return obj == null ? "" : (string)obj;
}
set
{
FState["TreeDataIDField"] = value;
}
}
/// <summary>
/// 父节点列名
/// </summary>
[Category(CategoryName.OPTIONS)]
[DefaultValue(null)]
[Description("父节点列名")]
public string TreeDataParentIDField
{
get
{
object obj = FState["TreeDataParentIDField"];
return obj == null ? "" : (string)obj;
}
set
{
FState["TreeDataParentIDField"] = value;
}
}
/// <summary>
/// 得到当然行的层级
/// </summary>
/// <param name="row">当前行</param>
/// <param name="Rows">行数据集</param>
/// <returns>层级</returns>
private int GetLevelNub(GridRow row, GridRowCollection Rows)
{
int lub = 0;
//ID所在列
int IDindex = FindColumn(TreeDataIDField).ColumnIndex;
//父ID所在列
int ParentIDindex = FindColumn(TreeDataParentIDField).ColumnIndex;
//如果过是第第一级就是0
if (row.Values[ParentIDindex].ToString() == "" || row.Values[ParentIDindex].ToString() == "0")
{
return lub;
}
else
{
foreach (GridRow gr in Rows)
{
//如果有父级
if (gr.Values[IDindex].ToString() == row.Values[ParentIDindex].ToString())
{
//层级加1
lub++;
//查看父级的父级
int nub = GetLevelNub(gr, Rows);
lub += nub == 0 ? 1 : nub;
}
}
}
return lub;
}
<f:Grid EnableCollapse="true" Width="800px" Height="400px" runat="server" DataKeyNames="Id,Name"
ID="Grid1" EnableTree="true" TreeName="name" TreeDataIDField="id" TreeDataParentIDField="topID" ShowBorder="true"
ShowHeader="true" Title="树表格" >
<Columns>
<f:RowNumberField />
<f:BoundField ColumnID="name" ExpandUnusedSpace="true" DataField="name" HeaderText="名称" >
</f:BoundField>
<f:BoundField ColumnID="id" DataField="id" Width="50px" HeaderText="ID">
</f:BoundField>
<f:BoundField ColumnID="topID" DataField="topID" Width="50px" HeaderText="topID">
</f:BoundField>
<f:BoundField DataField="levelcode" Width="100px" HeaderText="层级编号">
</f:BoundField>
<f:BoundField ColumnID="levelnub" DataField="levelnub" Width="100px" HeaderText="层级数">
</f:BoundField>
<f:BoundField DataField="subitem" Width="100px" HeaderText="是否为子菜单">
</f:BoundField>
<f:BoundField DataField="url" Width="100px" HeaderText="地址">
</f:BoundField>
</Columns>
</f:Grid>
/// <summary>
/// 对rows进行重新排序
/// </summary>
private void SortTreeRows()
{
GridRowCollection newrows = new GridRowCollection();
//复制到新列表
foreach (GridRow row in Rows)
{
newrows.Add(row);
}
//清空
Rows.Clear();
int pidindex = FindColumn(TreeDataParentIDField).ColumnIndex;
int idindex = FindColumn(TreeDataIDField).ColumnIndex;
//记录根节点
GridRowCollection onerows = new GridRowCollection();
//int i = 0;
foreach (GridRow row in newrows)
{
if (row.Values[pidindex].ToString() == "" || row.Values[pidindex].ToString() == "0")
{
//row.RowIndex = i;
//i++;
//保存跟节点
Rows.Add(row);
onerows.Add(row);
}
}
int c = onerows.Count;
//循环根节点插入子节点
for (int j = 0; j < c; j++)
{
GridRow row = onerows[j];
//注意起始index计算，从新插入的行开始下一次插入
BuildTree(Rows.Count - c + j, row, newrows);
}
for (int i = 0; i < Rows.Count; i++)
{
Rows[i].RowIndex = i;
}
}
/// <summary>
/// 重构行
/// </summary>
/// <param name="j">插入的index</param>
/// <param name="row">当前row</param>
/// <param name="rows">集合</param>
private void BuildTree(int j, GridRow row, GridRowCollection rows)
{
//得到下层节点index
string nexindex = GetNextIndex(row, rows);
if (nexindex != "")
{
string[] s = nexindex.Split(‘,‘);
int c = Rows.Count;
for (int i = 0; i < s.Length; i++)
{
GridRow dr = rows[Convert.ToInt32(s[i])];
//重新计算下一次插入的行号
int index = j + i + 1 + (Rows.Count - c);
if (Rows.Count != c)
{
index = index - 1;
}
//dr.RowIndex = index;
Rows.Insert(index, dr);
//循环子节点
BuildTree(index, dr, rows);
}
}
}
/// <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;
}
原文：http://www.cnblogs.com/shiworkyue/p/4211002.html