如果刚从ASP过渡到ASPX的程序员，大都会抱怨ASPX生成的客户端元素的ID，太长了！如果要在客户端脚本中使用,如利用：

这一类的方式来引用，非常不方便。

 
想像一下，你想生成如上的界面，然后在鼠标在Button上mousemove时，改变其前面对应的文本框中的文字，格式为： 'hello world ' + 该Button的ID + '--' + new Date().valueOf()

先不要管，这个有什么用，在什么地方用， 首先，你如何实现呢？

我的实现方法就是如标题所言，用服务器控件来对付它们，只要我们来选择一个合适的思路：假设我们有一个服务器控件，通过给控件指定两个相关联的控件（这里就是Buton和TextBox），我们在客户端为这两个控件，分别设置自定义的属性来直接指向另一个控件。 

如果有了另一个控件的引用，我们就可以在button的实例中,直接得到相关联的TextBox的引用，而绕开getElementById().
   先看一下该服务端控件的使用：

以下为引用的内容：<div>         <asp:Repeater ID="Repeater1" runat="server">             <ItemTemplate>                 <asp:TextBox ID="TextBox1" runat="server" Width="445px"></asp:TextBox>                 <asp:Button ID="Button1" runat="server" Text="Button" onmousemove="return button_onmousemove(this,event)" />                 <cc1:WebControlLinker ID="WebControlLinker1" runat="server" WebControlFirst="Button1" WebControlSecond="TextBox1" />             </ItemTemplate>         </asp:Repeater>              </div>

注意一下cc1:WebControlLinker 的WebControlFirst="Button1" WebControlSecond="TextBox1"  我们设置了两关联的控件.

    它们会在页面输出时，生成下面的代码：
页面呈现：

以下为引用的内容：<div>                          <input name="Repeater1$ctl00$TextBox1" type="text" id="Repeater1_ctl00_TextBox1" style="width:445px;" />                 <input type="submit" name="Repeater1$ctl00$Button1" value="Button" id="Repeater1_ctl00_Button1" onmousemove="return button_onmousemove(this,event)" />                 <span id="Repeater1_ctl00_WebControlLinker1"></span>                              <input name="Repeater1$ctl01$TextBox1" type="text" id="Repeater1_ctl01_TextBox1" style="width:445px;" />                 <input type="submit" name="Repeater1$ctl01$Button1" value="Button" id="Repeater1_ctl01_Button1" onmousemove="return button_onmousemove(this,event)" />                 <span id="Repeater1_ctl01_WebControlLinker1"></span>                              <input name="Repeater1$ctl02$TextBox1" type="text" id="Repeater1_ctl02_TextBox1" style="width:445px;" />                 <input type="submit" name="Repeater1$ctl02$Button1" value="Button" id="Repeater1_ctl02_Button1" onmousemove="return button_onmousemove(this,event)" />                 <span id="Repeater1_ctl02_WebControlLinker1"></span>                              <input name="Repeater1$ctl03$TextBox1" type="text" id="Repeater1_ctl03_TextBox1" style="width:445px;" />                 <input type="submit" name="Repeater1$ctl03$Button1" value="Button" id="Repeater1_ctl03_Button1" onmousemove="return button_onmousemove(this,event)" />                 <span id="Repeater1_ctl03_WebControlLinker1"></span>                              <input name="Repeater1$ctl04$TextBox1" type="text" id="Repeater1_ctl04_TextBox1" style="width:445px;" />                 <input type="submit" name="Repeater1$ctl04$Button1" value="Button" id="Repeater1_ctl04_Button1" onmousemove="return button_onmousemove(this,event)" />                 <span id="Repeater1_ctl04_WebControlLinker1"></span>                           </div>

 

以下为引用的内容：<script type="text/javascript"> <!-- document.getElementById('Repeater1_ctl00_Button1').setAttribute('TextBox1',document.getElementById('Repeater1_ctl00_TextBox1')); document.getElementById('Repeater1_ctl00_TextBox1').setAttribute('Button1',document.getElementById('Repeater1_ctl00_Button1')); document.getElementById('Repeater1_ctl01_Button1').setAttribute('TextBox1',document.getElementById('Repeater1_ctl01_TextBox1')); document.getElementById('Repeater1_ctl01_TextBox1').setAttribute('Button1',document.getElementById('Repeater1_ctl01_Button1')); document.getElementById('Repeater1_ctl02_Button1').setAttribute('TextBox1',document.getElementById('Repeater1_ctl02_TextBox1')); document.getElementById('Repeater1_ctl02_TextBox1').setAttribute('Button1',document.getElementById('Repeater1_ctl02_Button1')); document.getElementById('Repeater1_ctl03_Button1').setAttribute('TextBox1',document.getElementById('Repeater1_ctl03_TextBox1')); document.getElementById('Repeater1_ctl03_TextBox1').setAttribute('Button1',document.getElementById('Repeater1_ctl03_Button1')); document.getElementById('Repeater1_ctl04_Button1').setAttribute('TextBox1',document.getElementById('Repeater1_ctl04_TextBox1')); document.getElementById('Repeater1_ctl04_TextBox1').setAttribute('Button1',document.getElementById('Repeater1_ctl04_Button1')); // --> </script>

有了上面的东西，,我们要执行的脚本就可以简单的写成这样：

以下为引用的内容： <head><title>     Untitled Page </title>     <script type="text/javascript">         function button_onmousemove(obj,e)         {             obj.TextBox1.value = "hello world " + obj.TextBox1.Button1.id + '--'  + new Date().valueOf();;         }     </script> </head>

obj.TextBox1.value 这种方式,访问,也挺爽吧？

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