引子：在编写程序的过程中，我们是不是有碰到这样的情况呢？
控件位于Repeater,DataList,DataGrid中，但是我们需要在脚本中引用这个控件的ClientID或者UniqueName，但这时用传统的<%# ctl.ClientID %>会说找不到此控件。
控件位于Repeater,DataList,DataGrid中，但是我们需要在脚本中引用这个控件的ClientID或者UniqueName，但这时用传统的<%# ctl.ClientID %>会说找不到此控件。
这时候我们需要一个小小的控件：我叫它：BindableLiteral
看代码：
1
using System;
2using System.Collections.Generic;
3using System.Text;
4using System.Web.UI.WebControls;
5using System.ComponentModel;
6using System.Web.UI;
7
8namespace Limited.Controls
9
{
10
public enum eMode
11
{
12 UniqueName,
13 ClientID,
14
}
15
16 public class BindableLiteral :
17 Literal
18 {
19 [TypeConverter(typeof(ValidatedControlConverter)), IDReferenceProperty, DefaultValue("")]
20 public string BindControl
21 {
22 get
23 {
24 object obj = ViewState["BindControl"];
25 return obj == null ? null : (string)obj;
26 }
27 set
28 {
29 ViewState["BindControl"] = value;
30 }
31 }
32
33 public eMode RenderMode
34 {
35 get
36 {
37 object obj = ViewState["RenderMode"];
38 return obj == null ? eMode.ClientID : (eMode)obj;
39 }
40 set
41 {
42 ViewState["RenderMode"] = value;
43 }
44 }
45
46 [Browsable(false)]
47 public new string Text
48 {
49 set { }
50 }
51
52 protected override void Render(HtmlTextWriter writer)
53 {
54 if (!string.IsNullOrEmpty(BindControl))
55 {
56 Control ctl = this.NamingContainer.FindControl(BindControl);
57 if (ctl != null)
58 {
59 if (RenderMode == eMode.ClientID)
60 writer.Write(ctl.ClientID);
61 else
62 writer.Write(ctl.UniqueID);
63 }
64 }
65 }
66 }
67
}
68
69
using System;2
using System.Collections.Generic;3
using System.Text;4
using System.Web.UI.WebControls;5
using System.ComponentModel;6
using System.Web.UI;7
8
namespace Limited.Controls9
{10
public enum eMode11
{12
UniqueName,13
ClientID,14
}15
16
public class BindableLiteral :17
Literal18
{19
[TypeConverter(typeof(ValidatedControlConverter)), IDReferenceProperty, DefaultValue("")]20
public string BindControl21
{22
get23
{24
object obj = ViewState["BindControl"];25
return obj == null ? null : (string)obj;26
}27
set28
{29
ViewState["BindControl"] = value;30
}31
}32
33
public eMode RenderMode34
{35
get36
{37
object obj = ViewState["RenderMode"];38
return obj == null ? eMode.ClientID : (eMode)obj;39
}40
set41
{42
ViewState["RenderMode"] = value;43
}44
}45
46
[Browsable(false)]47
public new string Text48
{49
set { }50
}51
52
protected override void Render(HtmlTextWriter writer)53
{54
if (!string.IsNullOrEmpty(BindControl))55
{56
Control ctl = this.NamingContainer.FindControl(BindControl);57
if (ctl != null)58
{59
if (RenderMode == eMode.ClientID)60
writer.Write(ctl.ClientID);61
else62
writer.Write(ctl.UniqueID);63
}64
}65
}66
}67
}68
69
使用方式：
一、注册控件
<%@ Register Assembly="Controls" Namespace="Limited.Controls" TagPrefix="lm" %>
二、使用
1<asp:Repeater ID="rptPageArticle" runat="server" OnItemCommand="rptPageArticle_ItemCommand">
2 <HeaderTemplate>
3 <div id="xToolbar" style="overflow: visible; width: 100%; display: none;">
4 </div>
5 </HeaderTemplate>
6 <ItemTemplate>
7 <asp:TextBox ID="txtPageContent" runat="server" TextMode="multiLine" Width="96%"
8 Text='<%# DataBinder.Eval(Container.DataItem,"PageContent") %>' />
9
10 <script type="text/javascript">
11 var oFCKeditor = new FCKeditor( '<lm:BindableLiteral BindControl="txtPageContent" runat="server" RenderMode="UniqueName" />' ) ;
12 oFCKeditor.ReplaceTextarea() ;
13 </script>
14
15 </ItemTemplate>
16 </asp:Repeater>
<asp:Repeater ID="rptPageArticle" runat="server" OnItemCommand="rptPageArticle_ItemCommand">2
<HeaderTemplate>3
<div id="xToolbar" style="overflow: visible; width: 100%; display: none;">4
</div>5
</HeaderTemplate>6
<ItemTemplate>7
<asp:TextBox ID="txtPageContent" runat="server" TextMode="multiLine" Width="96%"8
Text='<%# DataBinder.Eval(Container.DataItem,"PageContent") %>' />9
10
<script type="text/javascript">11
var oFCKeditor = new FCKeditor( '<lm:BindableLiteral BindControl="txtPageContent" runat="server" RenderMode="UniqueName" />' ) ;12
oFCKeditor.ReplaceTextarea() ; 13
</script>14
15
</ItemTemplate>16
</asp:Repeater>没什么技术可言，不知道大家平时遇到这种情况是如何处理的。欢迎大家讨论。
http://www.cnblogs.com/skyover/archive/2006/09/25/bindableliteral.html