今天在开发遇到一个问题，需求三层嵌套，于是根据孟子的两层嵌套加折叠的基础上，增加为三层嵌套！
下面为效果图：
1
protected void Page_Load(object sender, EventArgs e)
2
{
3
if (!IsPostBack)
4
{
5 BindParent();
6
}
7
}
8
9 private void BindParent()
10 {
11 string sql = "select * from PageLink where PID=0 order by ID desc";
12 DataSet ds = Iwoak.ExecSQL.ExecuteDataset(sql);
13 gvParent.DataSource = ds.Tables[0].DefaultView;
14 gvParent.DataBind();
15 }
16
17
18 protected void gvParent_RowDataBound(object sender, GridViewRowEventArgs e)
19 {
20 if (e.Row.RowType == DataControlRowType.DataRow)
21 {
22 GridView gvChild = (GridView)e.Row.FindControl("gvChild");
23 Label lblID = (Label)e.Row.FindControl("lblID");
24 string sql = "select * from PageLink where PID=" + lblID.Text;
25 DataSet ds = Iwoak.ExecSQL.ExecuteDataset(sql);
26 gvChild.DataSource = ds.Tables[0].DefaultView;
27 gvChild.RowDataBound += new GridViewRowEventHandler(gvChild_RowDataBound);
28 gvChild.DataBind();
29 }
30 }
31
32
33 protected void gvChild_RowDataBound(object sender, GridViewRowEventArgs e)
34 {
35 if (e.Row.RowType == DataControlRowType.DataRow)
36 {
37 GridView gvlink = (GridView)e.Row.FindControl("gvlink");
38 Label lblID = (Label)e.Row.FindControl("lbl_ID");
39 string sql = "select * from PageLink where PID=" + lblID.Text;
40 DataSet ds = Iwoak.ExecSQL.ExecuteDataset(sql);
41 gvlink.DataSource = ds.Tables[0].DefaultView;
42 gvlink.DataBind();
43 }
44 }
protected void Page_Load(object sender, EventArgs e)2
{
3
if (!IsPostBack)4
{
5
BindParent();6
}7
}8
9
private void BindParent()10
{11
string sql = "select * from PageLink where PID=0 order by ID desc";12
DataSet ds = Iwoak.ExecSQL.ExecuteDataset(sql);13
gvParent.DataSource = ds.Tables[0].DefaultView;14
gvParent.DataBind();15
}16
17
18
protected void gvParent_RowDataBound(object sender, GridViewRowEventArgs e)19
{20
if (e.Row.RowType == DataControlRowType.DataRow)21
{22
GridView gvChild = (GridView)e.Row.FindControl("gvChild");23
Label lblID = (Label)e.Row.FindControl("lblID");24
string sql = "select * from PageLink where PID=" + lblID.Text;25
DataSet ds = Iwoak.ExecSQL.ExecuteDataset(sql);26
gvChild.DataSource = ds.Tables[0].DefaultView;27
gvChild.RowDataBound += new GridViewRowEventHandler(gvChild_RowDataBound);28
gvChild.DataBind();29
}30
}31
32
33
protected void gvChild_RowDataBound(object sender, GridViewRowEventArgs e)34
{35
if (e.Row.RowType == DataControlRowType.DataRow)36
{37
GridView gvlink = (GridView)e.Row.FindControl("gvlink");38
Label lblID = (Label)e.Row.FindControl("lbl_ID");39
string sql = "select * from PageLink where PID=" + lblID.Text;40
DataSet ds = Iwoak.ExecSQL.ExecuteDataset(sql);41
gvlink.DataSource = ds.Tables[0].DefaultView;42
gvlink.DataBind();43
}44
} 1<head runat="server">
2 <title>内嵌页链接--列表页面</title>
3 <script type="text/javascript" language="javascript" >
4 function ShowHidden(sid,ev)
5 {
6 ev = ev || window.event;
7 var target = ev.target || ev.srcElement;
8 var oDiv = document.getElementById("div" + sid);
9 oDiv.style.display = oDiv.style.display == "none"?"block":"none";
10 target.title = oDiv.style.display == "none"?"显示":"隐藏";
11 var imgid='img'+sid;
12 document.getElementById(imgid).src=oDiv.style.display == "none"?"../CommonFiles/images/open.gif":"../CommonFiles/images/close1.gif";
13 }
14</script>
15</head>
16<body>
17 <form id="form1" runat="server">
18
19 <asp:GridView ID="gvParent" runat="server" Width="100%" AutoGenerateColumns="False"
20 EmptyDataText='<font color="red" class="GridViewItem" >没有找到相关数据！</font>'
21 OnRowDataBound="gvParent_RowDataBound" >
22 <EmptyDataRowStyle HorizontalAlign="Center" />
23 <HeaderStyle ForeColor="White" HorizontalAlign="Center" CssClass="GridViewHeader" />
24 <PagerSettings Visible="False" />
25 <Columns>
26 <asp:TemplateField HeaderText="名称">
27 <itemtemplate>
28 <A id='<%#Eval("ID") %>' onclick="ShowHidden('<%#Eval("id") %>',event)" href="#">
29 <IMG style="BORDER-RIGHT: 0px; BORDER-TOP: 0px; BORDER-LEFT: 0px; BORDER-BOTTOM: 0px" id='img<%# Eval("ID")%>'
30 alt="展开/折叠" src="../CommonFiles/images/close1.gif" /> <%# Eval("name")%></A>
31 <asp:Label ID="lblID" runat="server" Text='<%#Eval("id") %>' style="display:none;"></asp:Label>
32 <div id="div<%# Eval("ID")%>" >
33 <asp:GridView id="gvChild" runat="server" OnRowDataBound="gvChild_RowDataBound" CssClass="inputAwoke" Width="95%" AutoGenerateColumns="False" ShowHeader="False" BorderWidth="0px" HorizontalAlign="Center">
34 <Columns>
35 <asp:TemplateField>
36 <itemtemplate>
37 <A id='<%#Eval("ID") %>' onclick="ShowHidden('<%#Eval("id") %>',event)" href="#">
38 <IMG style="BORDER-RIGHT: 0px; BORDER-TOP: 0px; BORDER-LEFT: 0px; BORDER-BOTTOM: 0px" id='img<%# Eval("ID")%>'
39 alt="展开/折叠" src="../CommonFiles/images/close1.gif" /> <%# Eval("name")%></A>
40 <asp:Label ID="lbl_ID" runat="server" Text='<%#Eval("id") %>' style="display:none;"></asp:Label>
41 <div id="div<%# Eval("ID")%>" >
42 <asp:GridView id="gvlink" runat="server" CssClass="inputAwoke" Width="92%" AutoGenerateColumns="False"
43 ShowHeader="False" BorderWidth="0px" HorizontalAlign="Center">
44 <EmptyDataRowStyle HorizontalAlign="Center" />
45 <HeaderStyle ForeColor="White" HorizontalAlign="Center" CssClass="GridViewHeader" />
46 <PagerSettings Visible="False" />
47 <Columns>
48 <asp:TemplateField>
49 <itemtemplate>
50 <a href="<%# Eval("UrlPath")%>" target="_blank"><%# Eval("name")%></a>
51 </itemtemplate>
52 <ItemStyle CssClass="GridViewItem" />
53 </asp:TemplateField>
54 </Columns>
55 </asp:GridView>
56
57 </div>
58 </itemtemplate>
59 <ItemStyle CssClass="GridViewItem" />
60 </asp:TemplateField>
61 </Columns>
62
63 </asp:GridView>
64 </div>
65 </itemtemplate>
66 <ItemStyle CssClass="GridViewItem" />
67 </asp:TemplateField>
68
69 </Columns>
70 </asp:GridView>
71
72 </form>
73</body>
<head runat="server">2
<title>内嵌页链接--列表页面</title>3
<script type="text/javascript" language="javascript" >4
function ShowHidden(sid,ev)5
{6
ev = ev || window.event;7
var target = ev.target || ev.srcElement;8
var oDiv = document.getElementById("div" + sid);9
oDiv.style.display = oDiv.style.display == "none"?"block":"none";10
target.title = oDiv.style.display == "none"?"显示":"隐藏";11
var imgid='img'+sid; 12
document.getElementById(imgid).src=oDiv.style.display == "none"?"../CommonFiles/images/open.gif":"../CommonFiles/images/close1.gif";13
}14
</script>15
</head>16
<body>17
<form id="form1" runat="server">18
19
<asp:GridView ID="gvParent" runat="server" Width="100%" AutoGenerateColumns="False" 20
EmptyDataText='<font color="red" class="GridViewItem" >没有找到相关数据！</font>' 21
OnRowDataBound="gvParent_RowDataBound" >22
<EmptyDataRowStyle HorizontalAlign="Center" />23
<HeaderStyle ForeColor="White" HorizontalAlign="Center" CssClass="GridViewHeader" />24
<PagerSettings Visible="False" />25
<Columns>26
<asp:TemplateField HeaderText="名称">27
<itemtemplate>28
<A id='<%#Eval("ID") %>' onclick="ShowHidden('<%#Eval("id") %>',event)" href="#">29
<IMG style="BORDER-RIGHT: 0px; BORDER-TOP: 0px; BORDER-LEFT: 0px; BORDER-BOTTOM: 0px" id='img<%# Eval("ID")%>' 30
alt="展开/折叠" src="../CommonFiles/images/close1.gif" /> <%# Eval("name")%></A>31
<asp:Label ID="lblID" runat="server" Text='<%#Eval("id") %>' style="display:none;"></asp:Label>32
<div id="div<%# Eval("ID")%>" >33
<asp:GridView id="gvChild" runat="server" OnRowDataBound="gvChild_RowDataBound" CssClass="inputAwoke" Width="95%" AutoGenerateColumns="False" ShowHeader="False" BorderWidth="0px" HorizontalAlign="Center">34
<Columns>35
<asp:TemplateField>36
<itemtemplate>37
<A id='<%#Eval("ID") %>' onclick="ShowHidden('<%#Eval("id") %>',event)" href="#">38
<IMG style="BORDER-RIGHT: 0px; BORDER-TOP: 0px; BORDER-LEFT: 0px; BORDER-BOTTOM: 0px" id='img<%# Eval("ID")%>' 39
alt="展开/折叠" src="../CommonFiles/images/close1.gif" /> <%# Eval("name")%></A>40
<asp:Label ID="lbl_ID" runat="server" Text='<%#Eval("id") %>' style="display:none;"></asp:Label>41
<div id="div<%# Eval("ID")%>" >42
<asp:GridView id="gvlink" runat="server" CssClass="inputAwoke" Width="92%" AutoGenerateColumns="False"43
ShowHeader="False" BorderWidth="0px" HorizontalAlign="Center">44
<EmptyDataRowStyle HorizontalAlign="Center" />45
<HeaderStyle ForeColor="White" HorizontalAlign="Center" CssClass="GridViewHeader" />46
<PagerSettings Visible="False" />47
<Columns>48
<asp:TemplateField>49
<itemtemplate>50
<a href="<%# Eval("UrlPath")%>" target="_blank"><%# Eval("name")%></a> 51
</itemtemplate>52
<ItemStyle CssClass="GridViewItem" />53
</asp:TemplateField>54
</Columns>55
</asp:GridView>56
57
</div>58
</itemtemplate>59
<ItemStyle CssClass="GridViewItem" />60
</asp:TemplateField>61
</Columns>62
63
</asp:GridView>64
</div>65
</itemtemplate>66
<ItemStyle CssClass="GridViewItem" />67
</asp:TemplateField>68
69
</Columns>70
</asp:GridView>71
72
</form>73
</body>